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Fall Weather at Tri-State Airport West Virginia, United States

Daily high temperatures decrease by 31°F, from 83°F to 52°F, rarely falling below 37°F or exceeding 90°F.

Daily low temperatures decrease by 28°F, from 63°F to 36°F, rarely falling below 23°F or exceeding 71°F.

For reference, on July 20, the hottest day of the year, temperatures at Tri-State Airport typically range from 68°F to 86°F, while on January 29, the coldest day of the year, they range from 27°F to 43°F.

Average High and Low Temperature in the Fall at Tri-State Airport

Average High and Low Temperature in the Fall at Tri-State AirportSepOctNov10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°FSummerWinterSep 183°FSep 183°F63°F63°FNov 3052°FNov 3052°F36°F36°FOct 173°FOct 173°F53°F53°FNov 162°FNov 162°F43°F43°F
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 fall temperatures. 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 the Fall at Tri-State Airport

Average Hourly Temperature in the Fall at Tri-State AirportSepOctNov12 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 AMSummerWintervery 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 average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

Albignasego, Italy (4,599 miles away) and Bagratashen, Armenia (6,022 miles) are the far-away foreign places with temperatures most similar to Tri-State Airport (view comparison).

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The fall at Tri-State Airport experiences very rapidly increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 32% to 54%.

The clearest day of the fall is September 2, with clear, mostly clear, or partly cloudy conditions 68% of the time.

For reference, on January 2, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 63%, while on August 26, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 68%.

Cloud Cover Categories in the Fall at Tri-State Airport

Cloud Cover Categories in the Fall at Tri-State AirportSepOctNov0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%SummerWinterSep 168%Sep 168%Nov 3046%Nov 3046%Oct 165%Oct 165%Nov 156%Nov 156%clearmostly 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.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. At Tri-State Airport, the chance of a wet day over the course of the fall is essentially constant, remaining around 26% throughout.

For reference, the year's highest daily chance of a wet day is 41% on May 27, and its lowest chance is 23% on October 19.

Over the course of the fall at Tri-State Airport, the chance of a day with only rain remains an essentially constant 25% throughout, the chance of a day with mixed snow and rain remains an essentially constant 1% throughout, and the chance of a day with only snow remains an essentially constant 0% throughout.

Probability of Precipitation in the Fall at Tri-State Airport

Probability of Precipitation in the Fall at Tri-State AirportSepOctNov0%0%5%5%10%10%15%15%20%20%25%25%30%30%35%35%40%40%SummerWinterOct 1923%Oct 1923%Sep 127%Sep 127%Nov 3028%Nov 3028%Oct 125%Oct 125%Nov 125%Nov 125%rainmixed
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 season and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day rainfall during the fall at Tri-State Airport is increasing, starting the season at 2.4 inches, when it rarely exceeds 4.0 inches or falls below 1.0 inches, and ending the season at 2.9 inches, when it rarely exceeds 4.7 inches or falls below 1.1 inches.

Average Monthly Rainfall in the Fall at Tri-State Airport

Average Monthly Rainfall in the Fall at Tri-State AirportSepOctNov0 in0 in1 in1 in2 in2 in3 in3 in4 in4 in5 in5 inSummerWinterSep 12.4 inSep 12.4 inNov 302.9 inNov 302.9 inOct 12.4 inOct 12.4 inNov 12.6 inNov 12.6 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 snowfall.

Over the course of the fall at Tri-State Airport, the length of the day is very rapidly decreasing. From the start to the end of the season, the length of the day decreases by 3 hours, 17 minutes, implying an average daily decrease of 2 minutes, 11 seconds, and weekly decrease of 15 minutes, 19 seconds.

The shortest day of the fall is November 30, with 9 hours, 42 minutes of daylight and the longest day is September 1, with 12 hours, 59 minutes of daylight.

Hours of Daylight and Twilight in the Fall at Tri-State Airport

Hours of Daylight and Twilight in the Fall at Tri-State AirportSepOctNov0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hrSummerWinterSep 2212 hr, 10 minSep 2212 hr, 10 minnightnightdaydayNov 309 hr, 42 minNov 309 hr, 42 minNov 110 hr, 33 minNov 110 hr, 33 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 fall at Tri-State Airport is 7:58 AM on November 2 and the earliest sunrise is 59 minutes earlier at 6:59 AM on November 3.

The latest sunset is 7:59 PM on September 1 and the earliest sunset is 2 hours, 49 minutes earlier at 5:10 PM on November 30.

Daylight saving time (DST) starts at 1:00 AM on November 3, 2024, shifting sunrise and sunset to be an hour later.

For reference, on June 20, the longest day of the year, the Sun rises at 6:06 AM and sets 14 hours, 51 minutes later, at 8:57 PM, while on December 21, the shortest day of the year, it rises at 7:43 AM and sets 9 hours, 29 minutes later, at 5:13 PM.

Sunrise & Sunset with Twilight and Daylight Saving Time in the Fall at Tri-State Airport

Sunrise & Sunset with Twilight and Daylight Saving Time in the Fall at Tri-State AirportSepOctNov2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMSummerWinter6:59 AM6:59 AMNov 35:27 PMNov 35:27 PM7:00 AM7:00 AMSep 17:59 PMSep 17:59 PM7:27 AM7:27 AMNov 305:10 PMNov 305:10 PM7:26 AM7:26 AMOct 17:12 PMOct 17:12 PMDSTNov 3DSTNov 3SolarMidnightSolarMidnightSolarNoonSunriseSunset
The solar day in the fall. 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 in the Fall at Tri-State Airport

Solar Elevation and Azimuth in the Fall at Tri-State AirportSepOctNov12 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 AMSummerWinter0102020304050600010203040
northeastsouthwest
Solar elevation and azimuth in the the fall of 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 the fall of 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. The label associated with each bar indicates the date and time that the phase is obtained, and the companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon.

Moon Rise, Set & Phases in the Fall at Tri-State Airport

Moon Rise, Set & Phases in the Fall at Tri-State AirportSepOctNov12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMSummerWinterAug 47:14 AMAug 47:14 AMAug 192:26 PMAug 192:26 PMSep 29:56 PMSep 29:56 PMSep 1710:35 PMSep 1710:35 PMOct 22:50 PMOct 22:50 PMOct 177:27 AMOct 177:27 AMNov 18:48 AMNov 18:48 AMNov 154:29 PMNov 154:29 PMDec 11:22 AMDec 11:22 AMDec 154:02 AMDec 154:02 AMDec 305:28 PMDec 305:28 PM9:08 PM9:08 PM8:37 PM8:37 PM7:40 AM7:40 AM8:01 PM8:01 PM7:30 PM7:30 PM7:45 AM7:45 AM7:08 PM7:08 PM6:22 PM6:22 PM7:49 AM7:49 AM8:05 AM8:05 AM6:23 PM6:23 PM8:16 AM8:16 AM8:05 AM8:05 AM5:12 PM5:12 PM8:16 AM8:16 AM4:53 PM4:53 PM
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 chance that a given day will be muggy at Tri-State Airport is very rapidly decreasing during the fall, falling from 44% to 0% over the course of the season.

For reference, on July 26, the muggiest day of the year, there are muggy conditions 67% of the time, while on November 20, the least muggy day of the year, there are muggy conditions 0% of the time.

Humidity Comfort Levels in the Fall at Tri-State Airport

Humidity Comfort Levels in the Fall at Tri-State AirportSepOctNov0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%SummerWinterSep 144%Sep 144%Nov 300%Nov 300%Oct 18%Oct 18%Nov 10%Nov 10%oppressiveoppressivemuggymuggyhumidhumiddrydrycomfortablecomfortable
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.

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 Tri-State Airport is increasing during the fall, increasing from 3.1 miles per hour to 4.5 miles per hour over the course of the season.

For reference, on February 25, the windiest day of the year, the daily average wind speed is 5.5 miles per hour, while on July 31, the calmest day of the year, the daily average wind speed is 2.9 miles per hour.

Average Wind Speed in the Fall at Tri-State Airport

Average Wind Speed in the Fall at Tri-State AirportSepOctNov0 mph0 mph1 mph1 mph2 mph2 mph3 mph3 mph4 mph4 mph5 mph5 mph6 mph6 mph7 mph7 mph8 mph8 mphSummerWinterSep 13.1 mphSep 13.1 mphNov 304.5 mphNov 304.5 mphOct 13.6 mphOct 13.6 mphNov 14.1 mphNov 14.1 mph
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The hourly average wind direction at Tri-State Airport throughout the fall is predominantly from the south, with a peak proportion of 40% on November 19.

Wind Direction in the Fall at Tri-State Airport

Wind Direction in the Fall at Tri-State AirportWSWSepOctNov0%100%20%80%40%60%60%40%80%20%100%0%SummerWinterwestsoutheastnorth
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).

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 Tri-State Airport typically lasts for 6.5 months (198 days), from around April 10 to around October 25, rarely starting before March 22 or after April 30, and rarely ending before October 6 or after November 13.

During the fall at Tri-State Airport, the chance that a given day is within the growing season is very rapidly decreasing falling from 100% to 1% over the course of the season.

Time Spent in Various Temperature Bands and the Growing Season in the Fall at Tri-State Airport

Time Spent in Various Temperature Bands and the Growing Season in the Fall at Tri-State Airportgrowing seasonSepOctNov0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%SummerWinter100%Sep 1100%Sep 1Nov 301%Nov 301%95%Oct 195%Oct 1Nov 131%Nov 131%Sep 9100%Sep 9100%freezingvery coldcoldcoolcomfortablewarmhotfrigid
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.

The average accumulated growing degree days at Tri-State Airport are very rapidly increasing during the fall, increasing by 905°F, from 3,173°F to 4,079°F, over the course of the season.

Growing Degree Days in the Fall at Tri-State Airport

Growing Degree Days in the Fall at Tri-State AirportSepOctNov3,000°F3,000°F3,200°F3,200°F3,400°F3,400°F3,600°F3,600°F3,800°F3,800°F4,000°F4,000°F4,200°F4,200°F4,400°F4,400°FSummerWinterSep 13,173°FSep 13,173°FNov 304,079°FNov 304,079°FOct 13,701°FOct 13,701°FNov 13,971°FNov 13,971°F
The average growing degree days accumulated over the course of the fall, 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 at Tri-State Airport is very rapidly decreasing during the fall, falling by 3.7 kWh, from 5.8 kWh to 2.1 kWh, over the course of the season.

Average Daily Incident Shortwave Solar Energy in the Fall at Tri-State Airport

Average Daily Incident Shortwave Solar Energy in the Fall at Tri-State AirportSepOctNov0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWhSummerWinterSep 15.8 kWhSep 15.8 kWhNov 302.1 kWhNov 302.1 kWhOct 14.5 kWhOct 14.5 kWhNov 13.1 kWhNov 13.1 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.

For the purposes of this report, the geographical coordinates of Tri-State Airport are 38.366 deg latitude, -82.558 deg longitude, and 784 ft elevation.

The topography within 2 miles of Tri-State Airport contains only modest variations in elevation, with a maximum elevation change of 371 feet and an average elevation above sea level of 689 feet. Within 10 miles contains only modest variations in elevation (636 feet). Within 50 miles contains significant variations in elevation (1,634 feet).

The area within 2 miles of Tri-State Airport is covered by trees (67%) and artificial surfaces (28%), within 10 miles by trees (78%) and artificial surfaces (16%), and within 50 miles by trees (88%).

This report illustrates the typical weather at Tri-State Airport, 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

Tri-State 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 Mason County Airport; Pikeville Remote Automatic Meteorological Observing System; Ohio University Airport-Snyder Field; Yeager Airport; Jackson, Carroll Airport; Kee Field; Fairfield County Airport; and Rickenbacker International 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 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.

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