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Average Weather in February at Centralia Municipal Airport Illinois, United States

Daily high temperatures increase by 9°F, from 40°F to 49°F, rarely falling below 25°F or exceeding 65°F.

Daily low temperatures increase by 7°F, from 26°F to 32°F, rarely falling below 10°F or exceeding 46°F.

For reference, on July 20, the hottest day of the year, temperatures at Centralia Municipal Airport typically range from 69°F to 89°F, while on January 22, the coldest day of the year, they range from 25°F to 40°F.

Average High and Low Temperature in February

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.

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

Average Hourly Temperature in February

Average Hourly Temperature in February at Centralia Municipal Airport181522112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282812 AM4 AM8 AM12 PM4 PM8 PM12 AMJanMarfreezingfreezingvery coldcoldcoolcold
The average hourly temperature, color coded into bands: 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 shaded overlays indicate night and civil twilight.

Mahdishahr, Iran (6,783 miles away) and Iskandar, Uzbekistan (6,753 miles) are the far-away foreign places with temperatures most similar to Centralia Municipal Airport (view comparison).

Clouds

The month of February at Centralia Municipal Airport experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 53% throughout the month. The highest chance of overcast or mostly cloudy conditions is 54% on February 12.

The clearest day of the month is February 24, with clear, mostly clear, or partly cloudy conditions 49% of the time.

For reference, on February 12, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 54%, while on August 23, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 70%.

Cloud Cover Categories in February

Cloud Cover Categories in February at Centralia Municipal Airport18152211223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728280%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%JanMarAug 2370%Aug 2370%Feb 147%Feb 147%Feb 2848%Feb 2848%Feb 1146%Feb 1146%clearmostly clearpartly cloudymostly cloudyovercast
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds: clear < 20% < mostly clear < 40% < partly cloudy < 60% < mostly cloudy < 80% < overcast.

Precipitation

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. At Centralia Municipal Airport, the chance of a wet day over the course of February is gradually increasing, starting the month at 19% and ending it at 22%.

For reference, the year's highest daily chance of a wet day is 39% on May 13, and its lowest chance is 17% on January 27.

Over the course of February at Centralia Municipal Airport, the chance of a day with only rain increases from 12% to 18%, the chance of a day with mixed snow and rain remains an essentially constant 3% throughout, and the chance of a day with only snow remains an essentially constant 2% throughout.

Probability of Precipitation in February

Probability of Precipitation in February at Centralia Municipal Airport18152211223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728280%5%10%15%20%25%30%35%JanMarFeb 119%Feb 119%Feb 2822%Feb 2822%Feb 1120%Feb 1120%snowmixedrain
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).

Rainfall

To show variation within the month and not just the monthly total, we show the rainfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day rainfall during February at Centralia Municipal Airport is gradually increasing, starting the month at 1.9 inches, when it rarely exceeds 3.8 inches or falls below 0.4 inches, and ending the month at 2.2 inches, when it rarely exceeds 4.2 inches or falls below 0.8 inches.

Average Monthly Rainfall in February

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 liquid-equivalent snowfall.

Snowfall

We report snowfall in liquid-equivalent terms. The actual depth of new snowfall is typically between 5 and 10 times the liquid-equivalent amount, assuming the ground is frozen. As with rainfall, we consider the liquid-equivalent snowfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day liquid-equivalent snowfall during February at Centralia Municipal Airport is essentially constant, remaining about 0.3 inches throughout, and rarely exceeding 0.9 inches or falling below -0.0 inches.

Average Monthly Liquid-Equivalent Snowfall in February

Average Monthly Liquid-Equivalent Snowfall in February at Centralia Municipal Airport18152211223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728280.0 in0.5 in1.0 in1.5 in2.0 in2.5 in3.0 in3.5 inJanMarFeb 10.3 inFeb 10.3 inFeb 280.2 inFeb 280.2 inFeb 110.3 inFeb 110.3 in
The average liquid-equivalent 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.

Sun

Over the course of February at Centralia Municipal Airport, the length of the day is rapidly increasing. From the start to the end of the month, the length of the day increases by 1 hour, 2 minutes, implying an average daily increase of 2 minutes, 17 seconds, and weekly increase of 15 minutes, 59 seconds.

The shortest day of the month is February 1, with 10 hours, 17 minutes of daylight and the longest day is February 28, with 11 hours, 19 minutes of daylight.

Hours of Daylight and Twilight in February

Hours of Daylight and Twilight in February at Centralia Municipal Airport18152211223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728280 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hrJanMarnightnightdaydayFeb 110 hr, 17 minFeb 110 hr, 17 minFeb 2811 hr, 19 minFeb 2811 hr, 19 min
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.

The latest sunrise of the month at Centralia Municipal Airport is 7:01 AM on February 1 and the earliest sunrise is 32 minutes earlier at 6:29 AM on February 28.

The earliest sunset is 5:18 PM on February 1 and the latest sunset is 30 minutes later at 5:48 PM on February 28.

Daylight saving time is observed at Centralia Municipal Airport during 2018, but it neither starts nor ends during February, so the entire month is in standard time.

For reference, on June 21, the longest day of the year, the Sun rises at 5:32 AM and sets 14 hours, 52 minutes later, at 8:23 PM, while on December 21, the shortest day of the year, it rises at 7:10 AM and sets 9 hours, 29 minutes later, at 4:38 PM.

Sunrise & Sunset with Twilight and Daylight Saving Time in February

Sunrise & Sunset with Twilight and Daylight Saving Time in February at Centralia Municipal Airport181522112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282812 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJanMar6:29 AM6:29 AMFeb 285:48 PMFeb 285:48 PM7:01 AM7:01 AMFeb 15:18 PMFeb 15:18 PM6:51 AM6:51 AMFeb 115:29 PMFeb 115:29 PMSolarMidnightSolarMidnightSolarNoonSunriseSunset
The solar day over the course of February. 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.

Humidity

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 chance that a given day will be muggy at Centralia Municipal Airport is essentially constant during February, remaining around 0% throughout.

For reference, on July 24, the muggiest day of the year, there are muggy conditions 63% of the time, while on January 1, the least muggy day of the year, there are muggy conditions 0% of the time.

Humidity Comfort Levels in February

Humidity Comfort Levels in February at Centralia Municipal Airport18152211223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728280%10%20%30%40%50%60%70%80%90%100%JanMarFeb 10%Feb 10%Feb 280%Feb 280%Feb 110%Feb 110%drydryhumidhumidcomfortablecomfortable
The percentage of time spent at various humidity comfort levels, categorized by dew point: dry < 55°F < comfortable < 60°F < humid < 65°F < muggy < 70°F < oppressive < 75°F < miserable.

Wind

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 Centralia Municipal Airport is essentially constant during February, remaining within 0.2 miles per hour of 11.3 miles per hour throughout.

For reference, on April 1, the windiest day of the year, the daily average wind speed is 11.9 miles per hour, while on July 31, the calmest day of the year, the daily average wind speed is 6.8 miles per hour.

Average Wind Speed in February

The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.
The wind direction at Centralia Municipal Airport during February is predominantly out of the west from February 1 to February 8, the south from February 8 to February 11 and from February 20 to February 28, and the north from February 11 to February 20.

Wind Direction in February

Wind Direction in February at Centralia Municipal AirportSWSNSNS18152211223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728280%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%JanMarwestsoutheastnorth
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions (north, east, south, and west), excluding hours in which the mean wind speed is less than 1 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

Growing Season

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 Centralia Municipal Airport typically lasts for 6.7 months (206 days), from around April 3 to around October 26, rarely starting before March 15 or after April 21, and rarely ending before October 5 or after November 15.

The month of February at Centralia Municipal Airport is reliably fully outside of the growing season.

Time Spent in Various Temperature Bands and the Growing Season in February

Time Spent in Various Temperature Bands and the Growing Season in February at Centralia Municipal Airport18152211223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728280%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%JanMar0%Feb 150%Feb 15Mar 1510%Mar 1510%frigidfreezingvery coldcoldcoolcomfortable
The percentage of time spent in various temperature bands: 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 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.

The average accumulated growing degree days at Centralia Municipal Airport are essentially constant during February, remaining within 12°F of 25°F throughout.

Growing Degree Days in February

The average growing degree days accumulated over the course of February, with 25th to 75th and 10th to 90th percentile bands.

Solar Energy

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 at Centralia Municipal Airport is increasing during February, rising by 1.0 kWh, from 2.7 kWh to 3.7 kWh, over the course of the month.

Average Daily Incident Shortwave Solar Energy in February

Average Daily Incident Shortwave Solar Energy in February at Centralia Municipal Airport18152211223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728280 kWh1 kWh2 kWh3 kWh4 kWh5 kWh6 kWh7 kWhJanMarFeb 12.7 kWhFeb 12.7 kWhFeb 283.7 kWhFeb 283.7 kWhFeb 113.1 kWhFeb 113.1 kWh
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

Topography

For the purposes of this report, the geographical coordinates of Centralia Municipal Airport are 38.515 deg latitude, -89.092 deg longitude, and 509 ft elevation.

The topography within 2 miles of Centralia Municipal Airport is essentially flat, with a maximum elevation change of 95 feet and an average elevation above sea level of 513 feet. Within 10 miles is essentially flat (220 feet). Within 50 miles also contains only modest variations in elevation (404 feet).

The area within 2 miles of Centralia Municipal Airport is covered by cropland (69%) and artificial surfaces (16%), within 10 miles by cropland (75%) and trees (21%), and within 50 miles by cropland (80%) and trees (16%).

Data Sources

This report illustrates the typical weather at Centralia Municipal Airport year round, 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

Centralia Municipal Airport 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 Salem-Leckrone Airport, Mount Vernon Airport, Flora Municipal Airport, Fairfield Municipal Airport, Sparta Community Airport-Hunter Field, Southern Illinois Airport, Flying L Airport, and Williamson County Regional Airport.

Other Data

All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Tables of the Sun, Moon and Planets , 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 aiports and weather stations are provided by AskGeo.com .

Maps are © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC.

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.