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Weather & Climate in Geronimo, OK
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Geronimo enjoys a temperate climate with an average annual temperature of 63°F (17°C). Winters average 41°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 1,095 feet.
Temperature
41°F Jan (5°C)
84°F Jul (29°C)
| Annual Average | 62.7°F |
| 16% above US avg | |
| January Average | 41°F (5°C) |
| July Average | 84°F (29°C) |
| Sunny Days | 318 days/yr |
Geography
| Elevation | 1,095 ft (334 m) |
| Area | 1.5 sq mi (3.9 km²) |
| Population Density | 779/sq mi |
| Coordinates | 34.4831°N, 98.3877°W |
| Timezone | America/Chicago |
| County | Cotton County County |
| Nearest Airport | Lawton-Fort Sill Regional (LAW) 6 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 45.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 4.9 / 100 |
| Social Vulnerability | 46.2 / 100 |
| Community Resilience | 35.4 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Very Low |
| Earthquake | Very Low |
| Wildfire | Relatively Low |
| Flood | Very Low |
| Hail | Very Low |
| Strong Wind | Relatively Low |
| Heat Wave | Very Low |
| Winter Weather | Very Low |
| Lightning | Very Low |
| Ice Storm | Relatively Low |
| Drought | Relatively Moderate |
| Cold Wave | Very Low |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
318 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.2.
| Jan 18, 1995 | 4 km SSE of Erin Springs, Oklahoma | M4.2 | 79 km | 5 km |
| Nov 15, 1990 | 5 km SSE of Erin Springs, Oklahoma | M3.9 | 79 km | 5 km |
| Apr 28, 1998 | 9 km NE of Medicine Park, Oklahoma | M3.9 | 33 km | 5 km |
| Feb 8, 2002 | 8 km SW of Elgin, Oklahoma | M3.8 | 27 km | 5 km |
| Sep 25, 2023 | 9 km WNW of Velma, Oklahoma | M3.7 | 56 km | 20 km |
| Dec 17, 1992 | 7 km SSE of Erin Springs, Oklahoma | M3.6 | 79 km | 5 km |
| Feb 27, 2013 | 3 km SSW of Nicoma Park, Oklahoma | M3.5 | 145 km | 5 km |
| Sep 9, 2016 | 1 km WSW of Spencer, Oklahoma | M3.5 | 146 km | 7 km |
| Aug 27, 2017 | 15 km WSW of Watonga, Oklahoma | M3.5 | 146 km | 8 km |
| Jun 8, 2004 | 6 km N of Lone Grove, Oklahoma | M3.5 | 108 km | 5 km |
| Apr 19, 2021 | 8 km SW of Dibble, Oklahoma | M3.5 | 84 km | 11 km |
| Aug 9, 2019 | 15 km NW of Okarche, Oklahoma | M3.4 | 149 km | 7 km |
| Jul 14, 2016 | 3 km WSW of Nicoma Park, Oklahoma | M3.4 | 145 km | 7 km |
| Mar 11, 2010 | 14 km S of Calumet, Oklahoma | M3.4 | 113 km | 6 km |
| Sep 23, 2013 | 4 km WNW of Marietta, Oklahoma | M3.4 | 128 km | 5 km |
| Jul 8, 2016 | 3 km NE of Dibble, Oklahoma | M3.4 | 96 km | 6 km |
| Mar 17, 2014 | 1 km ENE of Nicoma Park, Oklahoma | M3.4 | 150 km | 7 km |
| Mar 8, 2009 | 0 km SSE of Smith Village, Oklahoma | M3.4 | 137 km | 5 km |
| Jan 28, 2009 | 0 km ENE of Amber, Oklahoma | M3.4 | 89 km | 5 km |
| Mar 6, 2020 | 8 km NE of Alex, Oklahoma | M3.4 | 82 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
801 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF5. Total: 139 fatalities, 3,153 injuries.
| Date | Rating | Distance | Path | Fatalities |
| May 3, 1999 | EF5 | 87 km | 37.0 mi | 36 |
| Apr 3, 1964 | EF5 | 66 km | 4.7 mi | 7 |
| May 9, 2016 | EF4 | 95 km | 8.9 mi | 1 |
| Nov 7, 2011 | EF4 | 78 km | 17.4 mi | 0 |
| May 24, 2011 | EF4 | 70 km | 33.3 mi | 1 |
| May 24, 2011 | EF4 | 74 km | 23.1 mi | 0 |
| Feb 10, 2009 | EF4 | 94 km | 37.0 mi | 8 |
| May 22, 1981 | EF4 | 93 km | 16.7 mi | 0 |
| Apr 10, 1979 | EF4 | 78 km | 46.9 mi | 42 |
| Apr 10, 1979 | EF4 | 77 km | 39.7 mi | 11 |
| Apr 17, 1976 | EF4 | 46 km | 32.9 mi | 0 |
| Apr 19, 1972 | EF4 | 78 km | 28.2 mi | 5 |
| May 26, 1962 | EF4 | 38 km | 10.1 mi | 0 |
| May 24, 1957 | EF4 | 26 km | 21.6 mi | 4 |
| Nov 3, 2024 | EF3 | 44 km | 21.7 mi | 0 |
| Apr 19, 2023 | EF3 | 96 km | 10.9 mi | 1 |
| May 6, 2015 | EF3 | 92 km | 10.3 mi | 0 |
| May 24, 2011 | EF3 | 97 km | 8.6 mi | 0 |
| Oct 9, 2001 | EF3 | 80 km | 13.0 mi | 0 |
| May 3, 1999 | EF3 | 59 km | 9.0 mi | 0 |
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 | 89 km |
| 2011 | FERGUSON | 41,429 | 42 km |
| 2012 | TOWNLEY ROAD | 24,139 | 50 km |
| 2009 | RATCLIFF CITY-TATUMS | 23,099 | 85 km |
| 2009 | TWO MILE HILL COMPLEX | 20,991 | 87 km |
| 1996 | WESTSIDE | 16,723 | 49 km |
| 2006 | RINGGOLD | 16,382 | 89 km |
| 2005 | UNNAMED | 15,416 | 99 km |
| 1996 | HENRIETTA FIRE | 13,629 | 99 km |
| 2006 | RATLIFF CITY | 12,435 | 85 km |
| 2024 | RUSH | 12,239 | 37 km |
| 2011 | WICHITA COUNTY COMPLEX | 12,118 | 69 km |
| 2008 | UNNAMED | 10,392 | 24 km |
| 2022 | 62 FIRE | 9,804 | 52 km |
| 1993 | CRATER CREEK | 8,963 | 30 km |
| 2000 | CRATERLK-L | 8,876 | 29 km |
| 1994 | MT SCOTT | 8,005 | 33 km |
| 2000 | UNNAMED | 7,962 | 26 km |
| 2006 | BIA EMPIRE | 7,544 | 37 km |
| 2015 | CRATER CREEK | 7,378 | 29 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 41°F (5°C) | 1.3 in | Coldest, Driest |
| February | 44°F (7°C) | 1.6 in | |
| March | 53°F (12°C) | 2.5 in | |
| April | 62°F (16°C) | 2.8 in | |
| May | 70°F (21°C) | 4.8 in | Wettest |
| June | 79°F (26°C) | 3.9 in | |
| July | 84°F (29°C) | 2.1 in | Warmest |
| August | 83°F (28°C) | 2.5 in | |
| September | 76°F (24°C) | 3.9 in | |
| October | 64°F (18°C) | 3.1 in | |
| November | 51°F (11°C) | 1.9 in | |
| December | 42°F (6°C) | 1.5 in |
Geronimo has a seasonal temperature swing of 43°F / from 41°F in January to 84°F in July. Total annual precipitation is 31.8 inches, with May being the wettest month (4.8") and January the driest (1.3").