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Climate and Average Weather Year Round at Saint-Hubert Air Base Belgium

At Saint-Hubert Air Base, the summers are comfortable and partly cloudy and the winters are long, very cold, snowy, windy, and overcast. Over the course of the year, the temperature typically varies from 29°F to 69°F and is rarely below 18°F or above 80°F.

Based on the tourism score, the best time of year to visit Saint-Hubert Air Base for warm-weather activities is from early July to late August.

Climate at Saint-Hubert Air Base

very coldcoldcoolcomfortablecoolcoldvery coldJanFebMarAprMayJunJulAugSepOctNovDecNowNow58%58%21%21%overcastclearprecipitation: 2.7 inprecipitation: 2.7 in1.8 in1.8 inmuggy: 0%muggy: 0%0%0%drydrytourism score: 6.2tourism score: 6.20.00.0
Saint-Hubert Air Base weather by month. Click on each chart for more information.

The warm season lasts for 3.1 months, from June 5 to September 8, with an average daily high temperature above 62°F. The hottest month of the year at Saint-Hubert Air Base is July, with an average high of 68°F and low of 54°F.

The cold season lasts for 3.7 months, from November 17 to March 9, with an average daily high temperature below 43°F. The coldest month of the year at Saint-Hubert Air Base is January, with an average low of 30°F and high of 37°F.

Average High and Low Temperature at Saint-Hubert Air Base

Average High and Low Temperature at Saint-Hubert Air BasewarmcoldcoldJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FFeb 837°FFeb 837°FAug 369°FAug 369°F29°F29°F54°F54°FJun 562°FJun 562°FSep 862°FSep 862°FNov 1743°FNov 1743°FMar 943°FMar 943°F48°F48°F50°F50°F36°F36°F33°F33°FNowNow
The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.
AverageJanFebMarAprMayJunJulAugSepOctNovDec
High 37°F38°F45°F52°F59°F64°F68°F67°F61°F53°F44°F39°F
Temp. 33°F34°F39°F45°F52°F57°F61°F61°F55°F48°F40°F35°F
Low 30°F30°F34°F39°F45°F50°F54°F53°F49°F43°F36°F31°F

The figure below shows you a compact characterization of the entire year of hourly average temperatures. The horizontal axis is the day of the year, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.

Average Hourly Temperature at Saint-Hubert Air Base

Average Hourly Temperature at Saint-Hubert Air BaseJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMNowNowvery coldvery coldcoldcoldcoolcomfortablefreezing
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

Kitimat, Canada (4,774 miles away) is the far-away foreign place with temperatures most similar to Saint-Hubert Air Base (view comparison).

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At Saint-Hubert Air Base, the average percentage of the sky covered by clouds experiences significant seasonal variation over the course of the year.

The clearer part of the year at Saint-Hubert Air Base begins around March 30 and lasts for 6.3 months, ending around October 7.

The clearest month of the year at Saint-Hubert Air Base is July, during which on average the sky is clear, mostly clear, or partly cloudy 57% of the time.

The cloudier part of the year begins around October 7 and lasts for 5.7 months, ending around March 30.

The cloudiest month of the year at Saint-Hubert Air Base is December, during which on average the sky is overcast or mostly cloudy 79% of the time.

Cloud Cover Categories at Saint-Hubert Air Base

Cloud Cover Categories at Saint-Hubert Air BaseclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Jul 2258%Jul 2258%Nov 2121%Nov 2121%Mar 3039%Mar 3039%Oct 739%Oct 739%NowNowclearmostly clearpartly cloudymostly cloudyovercast
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds.
FractionJanFebMarAprMayJunJulAugSepOctNovDec
Cloudier 74%67%64%58%57%51%43%45%52%65%77%79%
Clearer 26%33%36%42%43%49%57%55%48%35%23%21%

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days at Saint-Hubert Air Base varies throughout the year.

The wetter season lasts 8.4 months, from May 10 to January 21, with a greater than 31% chance of a given day being a wet day. The month with the most wet days at Saint-Hubert Air Base is December, with an average of 11.1 days with at least 0.04 inches of precipitation.

The drier season lasts 3.6 months, from January 21 to May 10. The month with the fewest wet days at Saint-Hubert Air Base is April, with an average of 8.2 days with at least 0.04 inches of precipitation.

Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. The month with the most days of rain alone at Saint-Hubert Air Base is June, with an average of 10.4 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 37% on June 11.

Daily Chance of Precipitation at Saint-Hubert Air Base

Daily Chance of Precipitation at Saint-Hubert Air BasewetwetdryJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Dec 2137%Dec 2137%Apr 1626%Apr 1626%Jan 2131%Jan 2131%NowNowrainmixedsnow
The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).
Days ofJanFebMarAprMayJunJulAugSepOctNovDec
Rain 7.3d5.9d7.5d7.7d10.1d10.4d9.9d8.9d8.7d9.3d8.8d8.1d
Mixed 1.6d1.5d0.9d0.4d0.1d0.0d0.0d0.0d0.0d0.0d0.6d1.7d
Snow 1.1d0.9d0.5d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.4d1.3d
Any 10.0d8.3d9.0d8.2d10.1d10.4d9.9d8.9d8.7d9.4d9.8d11.1d

To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Saint-Hubert Air Base experiences some seasonal variation in monthly rainfall.

Rain falls throughout the year at Saint-Hubert Air Base. The month with the most rain at Saint-Hubert Air Base is June, with an average rainfall of 2.4 inches.

The month with the least rain at Saint-Hubert Air Base is April, with an average rainfall of 1.7 inches.

Average Monthly Rainfall at Saint-Hubert Air Base

The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average snowfall.
JanFebMarAprMayJunJulAugSepOctNovDec
Rainfall 2.1″1.8″1.8″1.7″2.2″2.4″2.3″2.2″2.3″2.3″2.1″2.3″

Snowfall

As with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day of the year. Saint-Hubert Air Base experiences some seasonal variation in monthly snowfall.

The snowy period of the year lasts for 4.4 months, from November 14 to March 27, with a sliding 31-day snowfall of at least 1.0 inches. The month with the most snow at Saint-Hubert Air Base is December, with an average snowfall of 3.3 inches.

The snowless period of the year lasts for 7.6 months, from March 27 to November 14. The least snow falls around August 3, with an average total accumulation of 0.0 inches.

Average Monthly Snowfall at Saint-Hubert Air Base

Average Monthly Snowfall at Saint-Hubert Air BasesnowsnowJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in2 in2 in4 in4 in6 in6 in8 in8 in10 in10 inDec 213.4 inDec 213.4 inAug 30.0 inAug 30.0 inNov 141.0 inNov 141.0 inMar 271.0 inMar 271.0 in
The average snowfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average rainfall.
JanFebMarAprMayJunJulAugSepOctNovDec
Snowfall 3.2″2.7″1.5″0.5″0.1″0.0″0.0″0.0″0.0″0.0″1.1″3.3″

The length of the day at Saint-Hubert Air Base varies extremely over the course of the year. In 2024, the shortest day is December 21, with 8 hours, 4 minutes of daylight; the longest day is June 20, with 16 hours, 23 minutes of daylight.

Hours of Daylight and Twilight at Saint-Hubert Air Base

Hours of Daylight and Twilight at Saint-Hubert Air BaseJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 8 minMar 2012 hr, 8 minMar 2016 hr, 23 minJun 2016 hr, 23 minJun 2012 hr, 10 minSep 2212 hr, 10 minSep 228 hr, 4 minDec 218 hr, 4 minDec 21nightnightdayNowNow
The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.
Hours ofJanFebMarAprMayJunJulAugSepOctNovDec
Daylight 8.6h10.1h11.9h13.8h15.5h16.3h15.9h14.4h12.6h10.7h9.0h8.2h

The earliest sunrise is at 5:28 AM on June 16, and the latest sunrise is 3 hours, 9 minutes later at 8:36 AM on December 31. The earliest sunset is at 4:36 PM on December 12, and the latest sunset is 5 hours, 16 minutes later at 9:51 PM on June 24.

Daylight saving time (DST) is observed at Saint-Hubert Air Base during 2024, starting in the spring on March 31, lasting 6.9 months, and ending in the fall on October 27.

Sunrise & Sunset with Twilight and Daylight Saving Time at Saint-Hubert Air Base

Sunrise & Sunset with Twilight and Daylight Saving Time at Saint-Hubert Air BaseJanFebMarAprMayJunJulAugSepOctNovDec2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 165:28 AMJun 165:28 AM9:51 PMJun 249:51 PMJun 24Dec 124:36 PMDec 124:36 PM8:36 AMDec 318:36 AMDec 31Mar 31DSTMar 31DSTDSTOct 27DSTOct 27daynightnightnightnightSolarMidnightSolarMidnightSolarNoonSunsetNowNow
The solar day over the course of the year 2024. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray. The transitions to and from daylight saving time are indicated by the 'DST' labels.

The figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation.

Solar Elevation and Azimuth at Saint-Hubert Air Base

Solar Elevation and Azimuth at Saint-Hubert Air BaseJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AM000010101020203030404050000101010102020303040405050601763NowNow
northeastsouthwest
Solar elevation and azimuth over the course of the year 2024. The black lines are lines of constant solar elevation (the angle of the sun above the horizon, in degrees). The background color fills indicate the azimuth (the compass bearing) of the sun. The lightly tinted areas at the boundaries of the cardinal compass points indicate the implied intermediate directions (northeast, southeast, southwest, and northwest).

The figure below presents a compact representation of key lunar data for 2024. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases.

Moon Rise, Set & Phases at Saint-Hubert Air Base

The time in which the moon is above the horizon (light blue area), with new moons (dark gray lines) and full moons (blue lines) indicated. The shaded overlays indicate night and civil twilight.

We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.

The perceived humidity level at Saint-Hubert Air Base, as measured by the percentage of time in which the humidity comfort level is muggy, oppressive, or miserable, does not vary significantly over the course of the year, remaining a virtually constant 0% throughout.

Humidity Comfort Levels at Saint-Hubert Air Base

Humidity Comfort Levels at Saint-Hubert Air BaseJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Mar 120%Mar 120%Jul 120%Jul 120%NowNowcomfortablecomfortabledrydryhumidhumid
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The percentage of time spent at various humidity comfort levels, categorized by dew point.
JanFebMarAprMayJunJulAugSepOctNovDec
Muggy days 0.0d0.0d0.0d0.0d0.0d0.1d0.1d0.1d0.0d0.0d0.0d0.0d

This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.

The average hourly wind speed at Saint-Hubert Air Base experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 5.8 months, from October 12 to April 7, with average wind speeds of more than 10.3 miles per hour. The windiest month of the year at Saint-Hubert Air Base is January, with an average hourly wind speed of 12.3 miles per hour.

The calmer time of year lasts for 6.2 months, from April 7 to October 12. The calmest month of the year at Saint-Hubert Air Base is August, with an average hourly wind speed of 8.5 miles per hour.

Average Wind Speed at Saint-Hubert Air Base

Average Wind Speed at Saint-Hubert Air BasewindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mph14 mph14 mph16 mph16 mph18 mph18 mph20 mph20 mphJan 1712.5 mphJan 1712.5 mphAug 48.1 mphAug 48.1 mphOct 1210.3 mphOct 1210.3 mphApr 710.3 mphApr 710.3 mphNowNow
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.
JanFebMarAprMayJunJulAugSepOctNovDec
Wind Speed (mph) 12.311.610.99.99.28.88.68.59.310.411.011.9

The predominant average hourly wind direction at Saint-Hubert Air Base varies throughout the year.

The wind is most often from the west for 1.4 months, from February 23 to April 5 and for 4.4 months, from May 8 to September 19, with a peak percentage of 41% on July 6. The wind is most often from the south for 1.6 weeks, from April 5 to April 16; for 1.7 weeks, from April 26 to May 8; and for 5.1 months, from September 19 to February 23, with a peak percentage of 28% on April 10. The wind is most often from the north for 1.1 weeks, from April 16 to April 24, with a peak percentage of 27% on April 18.

Wind Direction at Saint-Hubert Air Base

Wind Direction at Saint-Hubert Air BaseSWSSWSJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%NowNowwestsoutheastnorth
northeastsouthwest
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than 1.0 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

To characterize how pleasant the weather is at Saint-Hubert Air Base throughout the year, we compute two travel scores.

The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best time of year to visit Saint-Hubert Air Base for general outdoor tourist activities is from early July to late August, with a peak score in the first week of August.

Tourism Score at Saint-Hubert Air Base

Tourism Score at Saint-Hubert Air Basebest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810106.26.20.00.0NowNowtemperaturetemperature cloudscloudsprecipitationprecipitationtourism score
The tourism score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best time of year to visit Saint-Hubert Air Base for hot-weather activities is from mid July to mid August, with a peak score in the last week of July.

Beach/Pool Score at Saint-Hubert Air Base

Beach/Pool Score at Saint-Hubert Air BaseJanFebMarAprMayJunJulAugSepOctNovDec002244668810102.32.30.00.0NowNowtemperaturetemperature cloudscloudsprecipitationprecipitation
The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

Methodology

For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.

Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies.

Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more.

Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.

Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.

Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

The growing season at Saint-Hubert Air Base typically lasts for 6.4 months (197 days), from around April 19 to around November 1, rarely starting before March 30 or after May 9, and rarely ending before October 11 or after November 29.

Time Spent in Various Temperature Bands and the Growing Season at Saint-Hubert Air Base

Time Spent in Various Temperature Bands and the Growing Season at Saint-Hubert Air Basegrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%50%Apr 1950%Apr 1950%Nov 150%Nov 190%May 990%May 990%Oct 1190%Oct 1110%Mar 3010%Mar 3010%Nov 2910%Nov 290%Feb 20%Feb 2Aug 3100%Aug 3100%freezingvery coldcoldcoolcomfortablewarm
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The percentage of time spent in various temperature bands. The black line is the percentage chance that a given day is within the growing season.

Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.

Based on growing degree days alone, the first spring blooms at Saint-Hubert Air Base should appear around May 7, only rarely appearing before April 22 or after May 24.

Growing Degree Days at Saint-Hubert Air Base

Growing Degree Days at Saint-Hubert Air BaseJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F200°F200°F400°F400°F600°F600°F800°F800°F1,000°F1,000°F1,200°F1,200°F1,400°F1,400°FMay 790°FMay 790°FAug 10900°FAug 10900°FDec 311,357°FDec 311,357°F
The average growing degree days accumulated over the course of the year, with 25th to 75th and 10th to 90th percentile bands.

This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.

The average daily incident shortwave solar energy experiences extreme seasonal variation over the course of the year.

The brighter period of the year lasts for 3.5 months, from May 1 to August 19, with an average daily incident shortwave energy per square meter above 5.3 kWh. The brightest month of the year at Saint-Hubert Air Base is June, with an average of 6.3 kWh.

The darker period of the year lasts for 3.8 months, from October 26 to February 18, with an average daily incident shortwave energy per square meter below 1.8 kWh. The darkest month of the year at Saint-Hubert Air Base is December, with an average of 0.7 kWh.

Average Daily Incident Shortwave Solar Energy at Saint-Hubert Air Base

Average Daily Incident Shortwave Solar Energy at Saint-Hubert Air BasebrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhJun 256.4 kWhJun 256.4 kWhDec 250.6 kWhDec 250.6 kWhMay 15.3 kWhMay 15.3 kWhAug 195.3 kWhAug 195.3 kWhOct 261.8 kWhOct 261.8 kWhFeb 181.8 kWhFeb 181.8 kWhNowNow
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.
JanFebMarAprMayJunJulAugSepOctNovDec
Solar Energy (kWh) 0.91.73.04.65.76.36.25.43.92.31.10.7

For the purposes of this report, the geographical coordinates of Saint-Hubert Air Base are 50.034 deg latitude, 5.440 deg longitude, and 1,916 ft elevation.

The topography within 2 miles of Saint-Hubert Air Base contains significant variations in elevation, with a maximum elevation change of 528 feet and an average elevation above sea level of 1,759 feet. Within 10 miles contains significant variations in elevation (1,306 feet). Within 50 miles contains very significant variations in elevation (2,234 feet).

The area within 2 miles of Saint-Hubert Air Base is covered by trees (94%), within 10 miles by trees (57%) and cropland (24%), and within 50 miles by trees (39%) and cropland (30%).

This report illustrates the typical weather at Saint-Hubert Air Base, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

Temperature and Dew Point

Saint-Hubert Air Base has a weather station that reported reliably enough during the analysis period that we have included it in our network. When available, historical temperature and dew point measurements are taken directly from this weather station. These records are obtained from NOAA's Integrated Surface Hourly data set, falling back on ICAO METAR records as required.

In the case of missing or erroneous measurements from this station, we fall back on records from nearby stations, adjusted according to typical seasonal and diurnal intra-station differences. For a given day of the year and hour of the day, the fallback station is selected to minimize the prediction error over the years for which there are measurements for both stations.

The stations on which we may fall back include but are not limited to Saint Hubert, Liege, Liège Airport, Spa-La Sauvenière Airport, Sint-Truiden, Florennes Air Base, Charleville-Mézières, and Elsenborn-Butgenbach Air Base.

Other Data

All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , by Jean Meeus.

All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.

Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.

Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.

Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .

Time zones for airports and weather stations are provided by AskGeo.com .

Maps are © OpenStreetMap contributors.

Disclaimer

The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.

We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.

We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.

Please review our full terms contained on our Terms of Service page.