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Weather & Climate in Thomas, OK
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Thomas enjoys a temperate climate with an average annual temperature of 60°F (16°C). Winters average 38°F in January while summers reach 82°F in July. The area gets 320 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Annual precipitation totals 32.0 inches. Air quality is rated Good with a median AQI of 45. The city sits at an elevation of 1,744 feet.
Temperature
38°F Jan (3°C)
82°F Jul (28°C)
| Annual Average | 59.9°F |
| 11% above US avg | |
| January Average | 38°F (3°C) |
| July Average | 82°F (28°C) |
| Sunny Days | 320 days/yr |
Geography
| Elevation | 1,744 ft (532 m) |
| Area | 1.2 sq mi (3.1 km²) |
| Population Density | 884/sq mi |
| Coordinates | 35.7452°N, 98.7451°W |
| Timezone | America/Chicago |
| County | Custer County County |
| Nearest Airport | Clinton Regional (CLK) 18 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 45.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 62.0 / 100 |
| Social Vulnerability | 62.3 / 100 |
| Community Resilience | 42.0 / 100 |
Hazard Breakdown
| Tornado | Relatively High |
| Hurricane | Very Low |
| Earthquake | Very Low |
| Wildfire | Relatively Low |
| Flood | Relatively Low |
| Hail | Relatively Moderate |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Moderate |
| Lightning | Very Low |
| Ice Storm | Very High |
| Drought | Relatively Moderate |
| Cold Wave | Relatively Moderate |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
5,163 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.1.
| Feb 13, 2016 | 18 km SE of Waynoka, Oklahoma | M5.1 | 83 km | 8 km |
| Jan 7, 2016 | 16 km SE of Waynoka, Oklahoma | M4.7 | 83 km | 4 km |
| Apr 9, 2018 | 8 km NNE of Marshall, Oklahoma | M4.6 | 118 km | 5 km |
| Apr 7, 2018 | 5 km WNW of Lucien, Oklahoma | M4.6 | 126 km | 6 km |
| Jan 31, 2022 | 7 km NW of Medford, Oklahoma | M4.5 | 150 km | 8 km |
| Dec 7, 2013 | 8 km SW of Arcadia, Oklahoma | M4.5 | 124 km | 8 km |
| Jul 27, 2015 | 4 km NNE of Crescent, Oklahoma | M4.5 | 109 km | 5 km |
| Jan 7, 2016 | 17 km SE of Waynoka, Oklahoma | M4.4 | 81 km | 7 km |
| Jan 7, 2016 | 16 km SE of Waynoka, Oklahoma | M4.4 | 82 km | 7 km |
| May 17, 2019 | 8 km E of Pond Creek, Oklahoma | M4.4 | 139 km | 5 km |
| Apr 16, 2013 | Oklahoma | M4.4 | 150 km | 6 km |
| Aug 19, 2014 | 12 km SSW of Guthrie, Oklahoma | M4.4 | 115 km | 5 km |
| Jul 9, 2016 | 17 km SE of Waynoka, Oklahoma | M4.4 | 80 km | 7 km |
| Jul 20, 2015 | 7 km SSE of Byron, Oklahoma | M4.4 | 130 km | 4 km |
| Jun 9, 2018 | 8 km E of Nescatunga, Oklahoma | M4.4 | 129 km | 10 km |
| Jun 17, 2015 | 6 km ESE of Covington, Oklahoma | M4.3 | 125 km | 6 km |
| Sep 8, 2017 | 9 km ESE of Jefferson, Oklahoma | M4.3 | 143 km | 6 km |
| Jun 16, 2014 | 7 km NNE of Lake Aluma, Oklahoma | M4.3 | 123 km | 5 km |
| Jul 29, 2014 | 9 km E of Nescatunga, Oklahoma | M4.3 | 129 km | 5 km |
| Jan 13, 2024 | 6 km W of Arcadia, Oklahoma | M4.3 | 122 km | 7 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
754 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF5. Total: 35 fatalities, 457 injuries.
| Date | Rating | Distance | Path | Fatalities |
| May 24, 2011 | EF5 | 53 km | 63.1 mi | 9 |
| May 3, 1999 | EF4 | 75 km | 15.0 mi | 1 |
| May 3, 1999 | EF4 | 97 km | 35.0 mi | 2 |
| May 22, 1981 | EF4 | 58 km | 16.7 mi | 0 |
| May 2, 1979 | EF4 | 86 km | 20.6 mi | 1 |
| Apr 30, 1978 | EF4 | 92 km | 9.3 mi | 0 |
| Apr 17, 1976 | EF4 | 98 km | 32.9 mi | 0 |
| May 24, 1973 | EF4 | 80 km | 13.3 mi | 2 |
| Jun 10, 1967 | EF4 | 60 km | 8.7 mi | 4 |
| Jun 10, 1967 | EF4 | 41 km | 0.1 mi | 0 |
| May 25, 1962 | EF4 | 67 km | 7.2 mi | 0 |
| May 25, 2019 | EF3 | 76 km | 2.2 mi | 2 |
| May 31, 2013 | EF3 | 65 km | 16.2 mi | 8 |
| May 24, 2011 | EF3 | 52 km | 8.6 mi | 0 |
| May 24, 2011 | EF3 | 36 km | 13.2 mi | 1 |
| Apr 17, 2002 | EF3 | 50 km | 8.0 mi | 0 |
| Oct 9, 2001 | EF3 | 57 km | 6.0 mi | 0 |
| Oct 9, 2001 | EF3 | 67 km | 11.5 mi | 0 |
| Oct 9, 2001 | EF3 | 75 km | 13.0 mi | 0 |
| May 3, 1999 | EF3 | 73 km | 22.0 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: RHEA (277,949 acres, 2018).
| Year | Name | Acres Burned | Distance |
| 2018 | RHEA | 277,949 | 37 km |
| 2009 | PUTNAM | 42,995 | 30 km |
| 2009 | CHESTER | 34,432 | 64 km |
| 2022 | 217 | 18,293 | 96 km |
| 2008 | UNNAMED | 16,290 | 86 km |
| 2022 | 720 FIRE | 8,761 | 41 km |
| 2014 | CAMARGO | 7,494 | 48 km |
| 2008 | UNNAMED | 6,464 | 71 km |
| 2009 | CLEO | 5,063 | 77 km |
| 2024 | 57 | 4,727 | 81 km |
| 2020 | YOLO RANCH FIRE | 4,173 | 74 km |
| 2022 | 58 FIRE | 4,148 | 97 km |
| 2005 | KIMBALL RANCH | 4,103 | 99 km |
| 2008 | UNNAMED | 3,887 | 90 km |
| 2022 | BERLIN RD FIRE | 3,698 | 85 km |
| 2008 | UNNAMED | 3,001 | 48 km |
| 1998 | SHALLOW | 2,686 | 92 km |
| 2006 | STRONG | 2,509 | 65 km |
| 2008 | UNNAMED | 2,439 | 77 km |
| 2022 | CIMARRON FIRE | 2,155 | 71 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 38°F (3°C) | 0.8 in | Coldest, Driest |
| February | 40°F (5°C) | 1.1 in | |
| March | 49°F (9°C) | 2.1 in | |
| April | 58°F (15°C) | 2.4 in | |
| May | 67°F (20°C) | 4.7 in | Wettest |
| June | 77°F (25°C) | 3.9 in | |
| July | 82°F (28°C) | 2.2 in | Warmest |
| August | 81°F (27°C) | 2.6 in | |
| September | 72°F (22°C) | 3.2 in | |
| October | 61°F (16°C) | 2.4 in | |
| November | 47°F (8°C) | 1.7 in | |
| December | 38°F (3°C) | 0.9 in |
Thomas has a seasonal temperature swing of 45°F / from 38°F in January to 82°F in July. Total annual precipitation is 27.9 inches, with May being the wettest month (4.7") and January the driest (0.8").