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Weather & Climate in Winchester, OK
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Winchester enjoys a temperate climate with an average annual temperature of 60°F (16°C). Winters average 37°F in January while summers reach 82°F in July. The area gets 318 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Air quality is rated Good with a median AQI of 45. The city sits at an elevation of 842 feet.
Temperature
37°F Jan (3°C)
82°F Jul (28°C)
| Annual Average | 60.0°F |
| 11% above US avg | |
| January Average | 37°F (3°C) |
| July Average | 82°F (28°C) |
| Sunny Days | 318 days/yr |
Geography
| Elevation | 842 ft (257 m) |
| Area | 5.5 sq mi (14.1 km²) |
| Population Density | 99/sq mi |
| Coordinates | 35.7906°N, 95.9981°W |
| Timezone | America/Chicago |
| County | Okmulgee County County |
| Nearest Airport | Okmulgee Regional/Paul And Betty Abbott Field (OKM) 8 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 45.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 74.6 / 100 |
| Social Vulnerability | 82.1 / 100 |
| Community Resilience | 28.3 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Relatively Moderate |
| Flood | Relatively Low |
| Hail | Relatively Moderate |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Moderate |
| Winter Weather | Relatively Moderate |
| Lightning | Relatively Low |
| Ice Storm | Very High |
| Drought | Relatively High |
| Cold Wave | Relatively Moderate |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
3,600 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.8.
| Sep 3, 2016 | 14 km NW of Pawnee, Oklahoma | M5.8 | 109 km | 6 km |
| Feb 3, 2024 | 8 km NW of Prague, Oklahoma | M5.1 | 75 km | 3 km |
| Apr 9, 2018 | 8 km NNE of Marshall, Oklahoma | M4.6 | 150 km | 5 km |
| Apr 7, 2018 | 5 km WNW of Lucien, Oklahoma | M4.6 | 147 km | 6 km |
| Jul 27, 2015 | 4 km NNE of Crescent, Oklahoma | M4.5 | 144 km | 5 km |
| Dec 7, 2013 | 8 km SW of Arcadia, Oklahoma | M4.5 | 127 km | 8 km |
| Sep 6, 1997 | 6 km N of Tupelo, Oklahoma | M4.5 | 132 km | 5 km |
| Aug 19, 2014 | 12 km SSW of Guthrie, Oklahoma | M4.4 | 133 km | 5 km |
| Apr 16, 2013 | Oklahoma | M4.4 | 99 km | 6 km |
| Jun 17, 2015 | 6 km ESE of Covington, Oklahoma | M4.3 | 148 km | 6 km |
| Jun 16, 2014 | 7 km NNE of Lake Aluma, Oklahoma | M4.3 | 128 km | 5 km |
| Jan 13, 2024 | 6 km W of Arcadia, Oklahoma | M4.3 | 127 km | 7 km |
| Feb 5, 2021 | 5 km WNW of Lucien, Oklahoma | M4.2 | 147 km | 7 km |
| Jan 27, 2015 | 3 km SE of Perry, Oklahoma | M4.2 | 125 km | 3 km |
| Mar 29, 2016 | 4 km NNE of Crescent, Oklahoma | M4.2 | 144 km | 5 km |
| Apr 19, 2015 | 6 km W of Langston, Oklahoma | M4.2 | 122 km | 3 km |
| Aug 3, 2017 | 6 km ENE of Edmond, Oklahoma | M4.2 | 128 km | 5 km |
| Apr 7, 2014 | 6 km NNW of Meridian, Oklahoma | M4.2 | 116 km | 5 km |
| Apr 16, 2013 | 3 km WSW of Wellston, Oklahoma | M4.2 | 100 km | 7 km |
| Jul 17, 2016 | 5 km W of Lucien, Oklahoma | M4.2 | 147 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
924 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 82 fatalities, 1,399 injuries.
| Date | Rating | Distance | Path | Fatalities |
| May 6, 2024 | EF4 | 68 km | 40.8 mi | 2 |
| Apr 24, 1993 | EF4 | 43 km | 5.5 mi | 7 |
| Apr 26, 1991 | EF4 | 78 km | 4.0 mi | 0 |
| Apr 26, 1991 | EF4 | 63 km | 32.0 mi | 1 |
| Apr 29, 1984 | EF4 | 49 km | 27.0 mi | 1 |
| Apr 26, 1984 | EF4 | 63 km | 22.0 mi | 3 |
| May 17, 1981 | EF4 | 73 km | 33.6 mi | 0 |
| Jun 8, 1974 | EF4 | 61 km | 29.0 mi | 14 |
| May 26, 1973 | EF4 | 67 km | 3.6 mi | 5 |
| Oct 5, 1970 | EF4 | 99 km | 25.0 mi | 4 |
| Apr 28, 1950 | EF4 | 87 km | 4.5 mi | 5 |
| May 25, 2024 | EF3 | 61 km | 23.9 mi | 2 |
| Apr 27, 2024 | EF3 | 97 km | 27.9 mi | 2 |
| Mar 12, 2006 | EF3 | 88 km | 29.0 mi | 0 |
| May 29, 2004 | EF3 | 54 km | 7.5 mi | 0 |
| Jun 1, 1999 | EF3 | 59 km | 4.5 mi | 0 |
| Jun 1, 1999 | EF3 | 70 km | 2.0 mi | 2 |
| May 3, 1999 | EF3 | 74 km | 16.0 mi | 0 |
| Oct 4, 1998 | EF3 | 83 km | 10.0 mi | 0 |
| May 26, 1997 | EF3 | 70 km | 5.0 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: FREEDOM HILL (57,116 acres, 2012).
| Year | Name | Acres Burned | Distance |
| 2012 | FREEDOM HILL | 57,116 | 46 km |
| 2014 | UNNAMED | 36,112 | 95 km |
| 2018 | DRUMB | 30,422 | 80 km |
| 2004 | UNNAMED | 27,091 | 74 km |
| 2021 | CANDY CREEK | 23,167 | 85 km |
| 2011 | HOG TRAP | 22,895 | 76 km |
| 2009 | BURNT TRUST | 22,578 | 69 km |
| 2014 | RESERVE | 19,016 | 93 km |
| 2007 | UNNAMED | 18,089 | 78 km |
| 1991 | UNNAMED | 16,700 | 76 km |
| 2023 | HWY 123 | 14,980 | 97 km |
| 2005 | CABINESS | 14,646 | 87 km |
| 2014 | SPIDER | 14,587 | 96 km |
| 2004 | UNNAMED | 14,138 | 53 km |
| 2014 | UNNAMED | 14,119 | 77 km |
| 2016 | PHAROAH | 13,579 | 30 km |
| 2004 | UNNAMED | 12,086 | 76 km |
| 2023 | NORTH DRUM | 11,618 | 80 km |
| 2011 | UNNAMED | 11,348 | 84 km |
| 2023 | ZINK | 11,332 | 61 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 37°F (3°C) | 1.6 in | Coldest, Driest |
| February | 42°F (5°C) | 2.1 in | |
| March | 51°F (10°C) | 3.5 in | |
| April | 60°F (16°C) | 4.0 in | |
| May | 68°F (20°C) | 5.5 in | Wettest |
| June | 76°F (24°C) | 4.5 in | |
| July | 82°F (28°C) | 2.9 in | Warmest |
| August | 81°F (27°C) | 2.6 in | |
| September | 73°F (23°C) | 4.7 in | |
| October | 62°F (17°C) | 3.9 in | |
| November | 50°F (10°C) | 3.5 in | |
| December | 41°F (5°C) | 2.4 in |
Winchester has a seasonal temperature swing of 45°F / from 37°F in January to 82°F in July. Total annual precipitation is 41.2 inches, with May being the wettest month (5.5") and January the driest (1.6").