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Weather & Climate in Cornish, OK
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Cornish enjoys a temperate climate with an average annual temperature of 63°F (17°C). Winters average 42°F in January while summers reach 84°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 875 feet.
Temperature
42°F Jan (5°C)
84°F Jul (29°C)
| Annual Average | 63.1°F |
| 17% above US avg | |
| January Average | 42°F (5°C) |
| July Average | 84°F (29°C) |
| Sunny Days | 318 days/yr |
Geography
| Elevation | 875 ft (267 m) |
| Area | 0.6 sq mi (1.5 km²) |
| Population Density | 198/sq mi |
| Coordinates | 34.1636°N, 97.5964°W |
| Timezone | America/Chicago |
| County | Jefferson County County |
| Nearest Airport | Lawton-Fort Sill Regional (LAW) 54 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 45.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 20.9 / 100 |
| Social Vulnerability | 89.6 / 100 |
| Community Resilience | 14.3 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Very Low |
| Earthquake | Very Low |
| Wildfire | Relatively Low |
| Flood | Very Low |
| Hail | Relatively Low |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Low |
| Winter Weather | Very Low |
| Lightning | Very Low |
| Ice Storm | Relatively Moderate |
| Drought | Relatively High |
| Cold Wave | Relatively Low |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
358 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.5.
| Sep 6, 1997 | 6 km N of Tupelo, Oklahoma | M4.5 | 120 km | 5 km |
| Jan 18, 1995 | 4 km SSE of Erin Springs, Oklahoma | M4.2 | 68 km | 5 km |
| Apr 28, 1998 | 9 km NE of Medicine Park, Oklahoma | M3.9 | 102 km | 5 km |
| Nov 15, 1990 | 5 km SSE of Erin Springs, Oklahoma | M3.9 | 66 km | 5 km |
| Feb 8, 2002 | 8 km SW of Elgin, Oklahoma | M3.8 | 94 km | 5 km |
| Nov 28, 2013 | 6 km SSW of Perrin, Texas | M3.7 | 140 km | 5 km |
| Dec 9, 2013 | 8 km S of Perrin, Texas | M3.7 | 141 km | 5 km |
| Sep 25, 2023 | 9 km WNW of Velma, Oklahoma | M3.7 | 39 km | 20 km |
| Dec 8, 2013 | 0 km NNE of Sanctuary, Texas | M3.6 | 139 km | 5 km |
| Aug 9, 2015 | 1 km WNW of McLoud, Oklahoma | M3.6 | 149 km | 7 km |
| Nov 20, 2013 | 1 km NNW of Azle, Texas | M3.6 | 139 km | 5 km |
| Dec 17, 1992 | 7 km SSE of Erin Springs, Oklahoma | M3.6 | 65 km | 5 km |
| Apr 28, 2013 | 4 km NNW of Oakland, Oklahoma | M3.5 | 73 km | 5 km |
| Jun 8, 2004 | 6 km N of Lone Grove, Oklahoma | M3.5 | 32 km | 5 km |
| Mar 4, 2013 | 5 km S of Tishomingo, Oklahoma | M3.5 | 84 km | 5 km |
| Feb 27, 2013 | 3 km SSW of Nicoma Park, Oklahoma | M3.5 | 146 km | 5 km |
| Apr 19, 2021 | 8 km SW of Dibble, Oklahoma | M3.5 | 91 km | 11 km |
| Nov 25, 2013 | 3 km WNW of Sanctuary, Texas | M3.4 | 138 km | 5 km |
| Mar 8, 2009 | 0 km SSE of Smith Village, Oklahoma | M3.4 | 143 km | 5 km |
| Jan 28, 2009 | 0 km ENE of Amber, Oklahoma | M3.4 | 114 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
721 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF5. Total: 66 fatalities, 825 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Apr 3, 1964 | EF5 | 88 km | 4.7 mi | 7 |
| Apr 27, 2024 | EF4 | 50 km | 26.8 mi | 1 |
| May 9, 2016 | EF4 | 49 km | 8.9 mi | 1 |
| May 24, 2011 | EF4 | 81 km | 23.1 mi | 0 |
| May 24, 2011 | EF4 | 100 km | 33.3 mi | 1 |
| Feb 10, 2009 | EF4 | 26 km | 37.0 mi | 8 |
| Apr 19, 1972 | EF4 | 24 km | 28.2 mi | 5 |
| Apr 27, 1966 | EF4 | 100 km | 10.2 mi | 0 |
| May 26, 1962 | EF4 | 79 km | 10.1 mi | 0 |
| Sep 14, 1957 | EF4 | 93 km | 67.5 mi | 2 |
| May 24, 1957 | EF4 | 84 km | 21.6 mi | 4 |
| Apr 2, 1957 | EF4 | 89 km | 5.2 mi | 2 |
| Nov 3, 2024 | EF3 | 37 km | 21.7 mi | 0 |
| May 25, 2024 | EF3 | 72 km | 47.3 mi | 7 |
| Apr 27, 2024 | EF3 | 65 km | 9.9 mi | 1 |
| May 9, 2016 | EF3 | 61 km | 16.6 mi | 0 |
| May 9, 2016 | EF3 | 92 km | 9.1 mi | 1 |
| May 10, 2010 | EF3 | 27 km | 4.9 mi | 0 |
| May 7, 1995 | EF3 | 72 km | 26.0 mi | 2 |
| May 7, 1995 | EF3 | 43 km | 34.1 mi | 3 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: LOCO-HEALDTON (56,584 acres, 2009).
| Year | Name | Acres Burned | Distance |
| 2009 | LOCO-HEALDTON | 56,584 | 22 km |
| 1991 | ARBUCKLE | 29,823 | 48 km |
| 2021 | WINDMILL | 28,410 | 41 km |
| 2009 | MONTAGUE COUNTY COMPLEX | 25,907 | 62 km |
| 2009 | RATCLIFF CITY-TATUMS | 23,099 | 38 km |
| 2009 | TWO MILE HILL COMPLEX | 20,991 | 95 km |
| 2009 | BRUSHY MOUNTAIN | 18,412 | 29 km |
| 2006 | RINGGOLD | 16,382 | 46 km |
| 2005 | UNNAMED | 15,416 | 40 km |
| 1996 | HENRIETTA FIRE | 13,629 | 79 km |
| 2006 | RATLIFF CITY | 12,435 | 31 km |
| 2000 | UNNAMED | 9,943 | 47 km |
| 2006 | BIA EMPIRE | 7,544 | 48 km |
| 2011 | CHERRY HOMES | 7,398 | 96 km |
| 1988 | UNNAMED | 7,228 | 52 km |
| 2006 | BIALOCO | 6,843 | 18 km |
| 2009 | MONTAGUE COUNTY COMPLEX | 6,505 | 61 km |
| 2017 | SQUIRREL CREEK | 6,463 | 30 km |
| 2006 | VELMA | 6,364 | 39 km |
| 2009 | LINDSAY | 6,195 | 87 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 42°F (5°C) | 1.4 in | Coldest, Driest |
| February | 46°F (8°C) | 1.9 in | |
| March | 54°F (12°C) | 2.8 in | |
| April | 62°F (17°C) | 3.2 in | |
| May | 71°F (21°C) | 4.8 in | Wettest |
| June | 78°F (26°C) | 3.9 in | |
| July | 84°F (29°C) | 2.0 in | Warmest |
| August | 83°F (28°C) | 2.4 in | |
| September | 76°F (24°C) | 4.2 in | |
| October | 65°F (18°C) | 3.6 in | |
| November | 53°F (11°C) | 2.2 in | |
| December | 44°F (7°C) | 1.8 in |
Cornish has a seasonal temperature swing of 42°F / from 42°F in January to 84°F in July. Total annual precipitation is 33.9 inches, with May being the wettest month (4.8") and January the driest (1.4").