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Weather & Climate in Grant, OK
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Grant enjoys a temperate climate with an average annual temperature of 65°F (18°C). Winters average 43°F in January while summers reach 85°F in July. The area gets 308 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 48.9 inches (wetter than the 38-inch national average). Air quality is rated Good with a median AQI of 32. 83% of days have good air quality. The city sits at an elevation of 467 feet.
Temperature
43°F Jan (6°C)
85°F Jul (30°C)
| Annual Average | 65.0°F |
| 20% above US avg | |
| January Average | 43°F (6°C) |
| July Average | 85°F (30°C) |
| Sunny Days | 308 days/yr |
Geography
| Elevation | 467 ft (142 m) |
| Area | 1.9 sq mi (4.9 km²) |
| Population Density | 104/sq mi |
| Coordinates | 33.9365°N, 95.5179°W |
| Timezone | America/Chicago |
| County | Lamar County County |
| Nearest Airport | Durant Regional/Eaker Field (DUA) 50 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 32.0 |
| Rating | Good |
| Good Days % | 82.9% |
| Unhealthy Days | 0 |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 79.6 / 100 |
| Social Vulnerability | 72.5 / 100 |
| Community Resilience | 44.5 / 100 |
Hazard Breakdown
| Tornado | Relatively High |
| Hurricane | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Relatively Low |
| Flood | Relatively Low |
| Hail | Relatively High |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Moderate |
| Winter Weather | Relatively Moderate |
| Lightning | Relatively Low |
| Ice Storm | Very High |
| Drought | Relatively Moderate |
| Cold Wave | Relatively High |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
136 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 | 117 km | 5 km |
| Apr 3, 2012 | 8 km SSW of Pittsburg, Oklahoma | M4.1 | 84 km | 5 km |
| Aug 24, 2021 | 1 km S of Quinton, Oklahoma | M3.7 | 131 km | 7 km |
| Aug 18, 2019 | 1 km ENE of Quinton, Oklahoma | M3.7 | 133 km | 6 km |
| Apr 7, 2021 | 7 km WSW of Horntown, Oklahoma | M3.6 | 145 km | 29 km |
| Apr 28, 2013 | 4 km NNW of Oakland, Oklahoma | M3.5 | 121 km | 5 km |
| Mar 4, 2013 | 5 km S of Tishomingo, Oklahoma | M3.5 | 111 km | 5 km |
| May 31, 1997 | 3 km ESE of Neylandville, Texas | M3.4 | 94 km | 5 km |
| Oct 20, 2002 | 8 km WSW of Lane, Oklahoma | M3.4 | 64 km | 5 km |
| Aug 7, 2024 | 9 km N of Stonewall, Oklahoma | M3.4 | 128 km | 27 km |
| Aug 22, 2021 | 3 km ESE of Quinton, Oklahoma | M3.4 | 132 km | 7 km |
| Jul 22, 2021 | 2 km E of Quinton, Oklahoma | M3.3 | 133 km | 8 km |
| May 16, 2019 | 3 km W of Horntown, Oklahoma | M3.3 | 146 km | 5 km |
| Feb 25, 2009 | 4 km SE of Ashland, Oklahoma | M3.3 | 101 km | 5 km |
| Sep 25, 2010 | 5 km ENE of Madill, Oklahoma | M3.3 | 112 km | 5 km |
| Feb 7, 2020 | 2 km SSW of Quinton, Oklahoma | M3.2 | 130 km | 6 km |
| Feb 7, 2020 | 3 km SSW of Quinton, Oklahoma | M3.2 | 130 km | 6 km |
| May 27, 2007 | 9 km SW of Hanna, Oklahoma | M3.2 | 141 km | 5 km |
| May 27, 2013 | 5 km SSW of Bee, Oklahoma | M3.2 | 100 km | 7 km |
| Sep 23, 2013 | 2 km NNE of Marietta, Oklahoma | M3.2 | 147 km | 9 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
482 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF5. Total: 44 fatalities, 594 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Apr 2, 1982 | EF5 | 22 km | 53.0 mi | 0 |
| Nov 4, 2022 | EF4 | 54 km | 60.2 mi | 0 |
| Nov 4, 2022 | EF4 | 43 km | 44.7 mi | 0 |
| May 11, 1992 | EF4 | 99 km | 10.0 mi | 0 |
| Apr 2, 1982 | EF4 | 34 km | 23.0 mi | 10 |
| May 13, 1981 | EF4 | 25 km | 8.8 mi | 0 |
| May 5, 1961 | EF4 | 99 km | 26.4 mi | 16 |
| May 4, 1960 | EF4 | 19 km | 30.8 mi | 0 |
| Apr 2, 1957 | EF4 | 84 km | 7.9 mi | 3 |
| Apr 30, 2019 | EF3 | 64 km | 27.6 mi | 2 |
| May 9, 2016 | EF3 | 44 km | 13.8 mi | 0 |
| May 25, 2015 | EF3 | 69 km | 18.8 mi | 1 |
| Apr 14, 2011 | EF3 | 78 km | 17.0 mi | 2 |
| Apr 9, 2009 | EF3 | 96 km | 37.2 mi | 0 |
| May 4, 1999 | EF3 | 90 km | 71.5 mi | 1 |
| Nov 22, 1983 | EF3 | 87 km | 3.0 mi | 0 |
| Apr 2, 1982 | EF3 | 43 km | 8.0 mi | 0 |
| Apr 2, 1982 | EF3 | 78 km | 32.0 mi | 1 |
| Apr 2, 1982 | EF3 | 57 km | 52.0 mi | 1 |
| May 23, 1981 | EF3 | 92 km | 9.7 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: UNNAMED (17,973 acres, 2011).
| Year | Name | Acres Burned | Distance |
| 2011 | UNNAMED | 17,973 | 79 km |
| 2009 | 40 ACRE TURNAROUND | 13,985 | 92 km |
| 2004 | UNNAMED | 12,163 | 76 km |
| 2005 | UNNAMED | 10,935 | 66 km |
| 2011 | UNNAMED | 10,444 | 65 km |
| 2007 | BRANTLEY CABIN | 9,666 | 90 km |
| 2011 | TI VALLEY | 9,205 | 89 km |
| 2007 | EASY TO HANDLE | 9,120 | 81 km |
| 2011 | UNNAMED | 8,795 | 81 km |
| 2017 | CHOCKIE FIRE | 8,574 | 84 km |
| 2018 | SIX THOUSAND | 8,455 | 88 km |
| 2019 | UNNAMED | 8,217 | 94 km |
| 2005 | PINE SPRINGS | 7,709 | 54 km |
| 2009 | BULL | 7,241 | 77 km |
| 2023 | RX CEDAR MTN | 7,175 | 70 km |
| 2006 | GOAT HILL | 7,115 | 86 km |
| 2006 | MILL CREEK | 6,577 | 57 km |
| 2016 | UNNAMED | 6,409 | 94 km |
| 2011 | MAIN STREET | 6,024 | 85 km |
| 2020 | ASHFORD WELCH | 5,976 | 89 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 43°F (6°C) | 2.3 in | Coldest, Driest |
| February | 45°F (7°C) | 3.3 in | |
| March | 54°F (12°C) | 4.1 in | |
| April | 62°F (17°C) | 3.9 in | |
| May | 70°F (21°C) | 5.8 in | Wettest |
| June | 77°F (25°C) | 4.3 in | |
| July | 85°F (30°C) | 3.1 in | Warmest |
| August | 82°F (28°C) | 2.5 in | |
| September | 75°F (24°C) | 4.4 in | |
| October | 64°F (18°C) | 4.7 in | |
| November | 53°F (12°C) | 4.2 in | |
| December | 44°F (7°C) | 3.4 in |
Grant has a seasonal temperature swing of 42°F / from 43°F in January to 85°F in July. Total annual precipitation is 45.8 inches, with May being the wettest month (5.8") and January the driest (2.3").