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Average Weather at Fort Campbell U. S. Army Airfield Kentucky, United States

At Fort Campbell U. S. Army Airfield, the summers are hot and muggy, the winters are very cold and wet, and it is partly cloudy year round. Over the course of the year, the temperature typically varies from 29°F to 89°F and is rarely below 13°F or above 95°F.

Based on the tourism score, the best times of year to visit Fort Campbell U. S. Army Airfield for warm-weather activities are from mid May to late June and from late July to early October.

Climate Summary

coldcoolwarmhotwarmcoolcoldJanFebMarAprMayJunJulAugSepOctNovDec69%69%45%45%clearovercastprecipitation: 4.9 inprecipitation: 4.9 in2.4 in2.4 inmuggy: 80%muggy: 80%0%0%drydrytourism score: 6.3tourism score: 6.30.60.6
Click on each chart for more information.

Temperature

The hot season lasts for 3.8 months, from May 26 to September 20, with an average daily high temperature above 80°F. The hottest day of the year is July 22, with an average high of 89°F and low of 71°F.

The cold season lasts for 3.0 months, from November 29 to February 27, with an average daily high temperature below 54°F. The coldest day of the year is January 29, with an average low of 29°F and high of 46°F.

Average High and Low Temperature

Average High and Low Temperature at Fort Campbell U. S. Army AirfieldhotcoldcoldJanFebMarAprMayJunJulAugSepOctNovDec0°F10°F20°F30°F40°F50°F60°F70°F80°F90°F100°FJan 2946°FJan 2946°FJul 2289°FJul 2289°F29°F29°F71°F71°FMay 2680°FMay 2680°FSep 2080°FSep 2080°FNov 2954°FNov 2954°F62°F62°F60°F60°F38°F38°F36°F36°FLowHigh
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 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

Average Hourly Temperature at Fort Campbell U. S. Army AirfieldJanFebMarAprMayJunJulAugSepOctNovDec12 AM4 AM8 AM12 PM4 PM8 PM12 AMvery coldvery coldcoldcoldcoolcoolcomfortablewarmhotfreezing
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.

Saloğlu, Azerbaijan (6,289 miles away) is the far-away foreign place with temperatures most similar to Fort Campbell U. S. Army Airfield (view comparison).

Clouds

At Fort Campbell U. S. Army Airfield, 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 Fort Campbell U. S. Army Airfield begins around June 15 and lasts for 4.8 months, ending around November 8. On August 23, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 69% of the time, and overcast or mostly cloudy 31% of the time.

The cloudier part of the year begins around November 8 and lasts for 7.2 months, ending around June 15. On January 3, the cloudiest day of the year, the sky is overcast or mostly cloudy 55% of the time, and clear, mostly clear, or partly cloudy 45% of the time.

Cloud Cover Categories

Cloud Cover Categories at Fort Campbell U. S. Army AirfieldclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Aug 2369%Aug 2369%Jan 345%Jan 345%Jun 1557%Jun 1557%Nov 857%Nov 857%clearmostly clearpartly 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.

Precipitation

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days at Fort Campbell U. S. Army Airfield varies throughout the year.

The wetter season lasts 4.6 months, from March 19 to August 6, with a greater than 32% chance of a given day being a wet day. The chance of a wet day peaks at 40% on May 28.

The drier season lasts 7.4 months, from August 6 to March 19. The smallest chance of a wet day is 24% on October 12.

Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 40% on May 28.

Daily Chance of Precipitation

Daily Chance of Precipitation at Fort Campbell U. S. Army AirfieldwetdrydryJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%May 2840%May 2840%Oct 1224%Oct 1224%Jan 127%Jan 127%Mar 1932%Mar 1932%Aug 632%Aug 632%rainsnow
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 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. Fort Campbell U. S. Army Airfield experiences significant seasonal variation in monthly rainfall.

Rain falls throughout the year at Fort Campbell U. S. Army Airfield. The most rain falls during the 31 days centered around May 1, with an average total accumulation of 4.9 inches.

The least rain falls around August 23, with an average total accumulation of 2.4 inches.

Average Monthly Rainfall

Average Monthly Rainfall at Fort Campbell U. S. Army AirfieldJanFebMarAprMayJunJulAugSepOctNovDec0 in2 in4 in6 in8 in10 inMay 14.9 inMay 14.9 inAug 232.4 inAug 232.4 inDec 14.4 inDec 14.4 inJan 163.1 inJan 163.1 in
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. Colder, drier snow tends to be on the higher end of that range and warmer, wetter snow on the lower end.

As with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day of the year. Fort Campbell U. S. Army Airfield experiences some seasonal variation in monthly liquid-equivalent snowfall.

The snowy period of the year lasts for 3.2 months, from December 4 to March 11, with a sliding 31-day liquid-equivalent snowfall of at least 0.1 inches. The most snow falls during the 31 days centered around January 30, with an average total liquid-equivalent accumulation of 0.3 inches.

The snowless period of the year lasts for 8.8 months, from March 11 to December 4. The least snow falls around July 14, with an average total liquid-equivalent accumulation of 0.0 inches.

Average Liquid-Equivalent Monthly Snowfall

Average Liquid-Equivalent Monthly Snowfall at Fort Campbell U. S. Army AirfieldsnowsnowJanFebMarAprMayJunJulAugSepOctNovDec0 in1 in2 in3 in4 in5 inJan 300.3 inJan 300.3 inJul 140.0 inJul 140.0 inDec 40.1 inDec 40.1 inMar 110.1 inMar 110.1 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

The length of the day at Fort Campbell U. S. Army Airfield varies significantly over the course of the year. In 2018, the shortest day is December 21, with 9 hours, 39 minutes of daylight; the longest day is June 21, with 14 hours, 40 minutes of daylight.

Hours of Daylight and Twilight

Hours of Daylight and Twilight at Fort Campbell U. S. Army AirfieldJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 6 minMar 2012 hr, 6 minMar 2014 hr, 40 minJun 2114 hr, 40 minJun 2112 hr, 9 minSep 2212 hr, 9 minSep 229 hr, 39 minDec 219 hr, 39 minDec 21nightnightday
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 earliest sunrise is at 5:30 AM on June 13, and the latest sunrise is 1 hour, 45 minutes later at 7:15 AM on November 3. The earliest sunset is at 4:33 PM on December 6, and the latest sunset is 3 hours, 39 minutes later at 8:12 PM on June 28.

Daylight saving time (DST) is observed at Fort Campbell U. S. Army Airfield during 2018, starting in the spring on March 11, lasting 7.8 months, and ending in the fall on November 4.

Sunrise & Sunset with Twilight and Daylight Saving Time

Sunrise & Sunset with Twilight and Daylight Saving Time at Fort Campbell U. S. Army AirfieldJanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 135:30 AMJun 135:30 AM8:12 PMJun 288:12 PMJun 28Dec 64:33 PMDec 64:33 PM7:15 AMNov 37:15 AMNov 3Mar 11DSTMar 11DSTDSTNov 4DSTNov 4daynightnightnightnightSolarMidnightSolarMidnightSolarNoonSunriseSunset
The solar day over the course of the year 2018. 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.

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.

Fort Campbell U. S. Army Airfield experiences extreme seasonal variation in the perceived humidity.

The muggier period of the year lasts for 4.5 months, from May 13 to September 27, during which time the comfort level is muggy, oppressive, or miserable at least 20% of the time. The muggiest day of the year is July 23, with muggy conditions 80% of the time.

The least muggy day of the year is January 29, when muggy conditions are essentially unheard of.

Humidity Comfort Levels

Humidity Comfort Levels at Fort Campbell U. S. Army AirfieldmuggyJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Jan 290%Jan 290%80%Jul 2380%Jul 23May 1320%May 1320%Sep 2720%Sep 2720%oppressiveoppressivemuggymuggydrydrymiserablemiserablecomfortablecomfortable
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.

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 Fort Campbell U. S. Army Airfield experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 6.6 months, from October 25 to May 13, with average wind speeds of more than 6.3 miles per hour. The windiest day of the year is February 25, with an average hourly wind speed of 8.0 miles per hour.

The calmer time of year lasts for 5.4 months, from May 13 to October 25. The calmest day of the year is July 31, with an average hourly wind speed of 4.5 miles per hour.

Average Wind Speed

Average Wind Speed at Fort Campbell U. S. Army AirfieldwindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph2 mph4 mph6 mph8 mph10 mph12 mphFeb 258.0 mphFeb 258.0 mphJul 314.5 mphJul 314.5 mphOct 256.3 mphOct 256.3 mphMay 136.3 mphMay 136.3 mph
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The predominant average hourly wind direction at Fort Campbell U. S. Army Airfield varies throughout the year.

The wind is most often from the north for 1.3 weeks, from February 12 to February 21 and for 1.1 months, from July 29 to September 1, with a peak percentage of 31% on August 7. The wind is most often from the south for 4.5 months, from February 21 to July 4 and for 5.4 months, from September 1 to February 12, with a peak percentage of 43% on May 15. The wind is most often from the west for 3.6 weeks, from July 4 to July 29, with a peak percentage of 33% on July 14.

Wind Direction

Wind Direction at Fort Campbell U. S. Army AirfieldSSWNSJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%westsoutheastnorth
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).

Best Time of Year to Visit

To characterize how pleasant the weather is at Fort Campbell U. S. Army Airfield 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 times of year to visit Fort Campbell U. S. Army Airfield for general outdoor tourist activities are from mid May to late June and from late July to early October, with a peak score in the third week of September.

Tourism Score

Tourism Score at Fort Campbell U. S. Army Airfieldbest timeJanFebMarAprMayJunJulAugSepOctNovDec02468106.36.30.60.65.85.85.55.5 precipitationprecipitationcloudscloudstemperaturetemperaturetourism 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 Fort Campbell U. S. Army Airfield for hot-weather activities is from mid June to early September, with a peak score in the second week of August.

Beach/Pool Score

Beach/Pool Score at Fort Campbell U. S. Army Airfieldbest timeJanFebMarAprMayJunJulAugSepOctNovDec02468106.16.10.00.0 precipitationprecipitationcloudscloudstemperaturetemperaturebeach/pool score
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.

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 Fort Campbell U. S. Army Airfield typically lasts for 7.1 months (216 days), from around March 31 to around November 2, rarely starting before March 10 or after April 20, and rarely ending before October 15 or after November 23.

Time Spent in Various Temperature Bands and the Growing Season

Time Spent in Various Temperature Bands and the Growing Season at Fort Campbell U. S. Army Airfieldgrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%50%Mar 3150%Mar 3150%Nov 250%Nov 290%Apr 2090%Apr 2090%Oct 1590%Oct 1510%Mar 1010%Mar 1010%Nov 2310%Nov 230%Dec 250%Dec 25Jul 16100%Jul 16100%freezingvery coldcoldcomfortablewarmhotcoolfrigid
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 Fort Campbell U. S. Army Airfield should appear around February 27, only rarely appearing before February 7 or after March 20.

Growing Degree Days

Growing Degree Days at Fort Campbell U. S. Army AirfieldJanFebMarAprMayJunJulAugSepOctNovDec0°F1,000°F2,000°F3,000°F4,000°F5,000°FFeb 2785°FFeb 2785°FMay 21900°FMay 21900°FJun 281,800°FJun 281,800°FDec 314,738°FDec 314,738°F
The average growing degree days accumulated over the course of the year, 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 experiences significant seasonal variation over the course of the year.

The brighter period of the year lasts for 4.4 months, from April 19 to September 1, with an average daily incident shortwave energy per square meter above 5.8 kWh. The brightest day of the year is July 12, with an average of 6.7 kWh.

The darker period of the year lasts for 2.9 months, from November 10 to February 7, with an average daily incident shortwave energy per square meter below 3.1 kWh. The darkest day of the year is December 25, with an average of 2.2 kWh.

Average Daily Incident Shortwave Solar Energy

Average Daily Incident Shortwave Solar Energy at Fort Campbell U. S. Army AirfieldbrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh1 kWh2 kWh3 kWh4 kWh5 kWh6 kWh7 kWh8 kWh9 kWhJul 126.7 kWhJul 126.7 kWhDec 252.2 kWhDec 252.2 kWhApr 195.8 kWhApr 195.8 kWhSep 15.8 kWhSep 15.8 kWhFeb 73.1 kWhFeb 73.1 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 Fort Campbell U. S. Army Airfield are 36.669 deg latitude, -87.496 deg longitude, and 548 ft elevation.

The topography within 2 miles of Fort Campbell U. S. Army Airfield contains only modest variations in elevation, with a maximum elevation change of 131 feet and an average elevation above sea level of 544 feet. Within 10 miles also contains only modest variations in elevation (354 feet). Within 50 miles contains only modest variations in elevation (676 feet).

The area within 2 miles of Fort Campbell U. S. Army Airfield is covered by artificial surfaces (46%), cropland (35%), and trees (16%), within 10 miles by cropland (65%) and trees (25%), and within 50 miles by trees (52%) and cropland (41%).

Data Sources

This report illustrates the typical weather at Fort Campbell U. S. Army Airfield, 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

Fort Campbell U. S. Army Airfield 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 Outlaw Field, Murray-Calloway County Airport, Nashville International Airport, Bowling Green-Warren County Regional Airport, Owensboro–Daviess County Regional Airport, Henderson City-County Airport, Smyrna Airport, and Barkley 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.