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Weather & Climate in Grainola, OK
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Grainola enjoys a temperate climate with an average annual temperature of 58°F (15°C). Winters average 35°F in January while summers reach 80°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 1,206 feet.
Temperature
35°F Jan (2°C)
80°F Jul (27°C)
| Annual Average | 58.3°F |
| 8% above US avg | |
| January Average | 35°F (2°C) |
| July Average | 80°F (27°C) |
| Sunny Days | 318 days/yr |
Geography
| Elevation | 1,206 ft (368 m) |
| Area | 0.2 sq mi (0.6 km²) |
| Population Density | 163/sq mi |
| Coordinates | 36.9379°N, 96.6488°W |
| Timezone | America/Chicago |
| County | Osage County County |
| Nearest Airport | Ponca City Regional (PNC) 29 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 45.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 78.1 / 100 |
| Social Vulnerability | 80.9 / 100 |
| Community Resilience | 35.9 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Very Low |
| Earthquake | Very Low |
| Wildfire | Relatively Moderate |
| Flood | Relatively Moderate |
| Hail | Very Low |
| 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 Moderate |
| Landslide | Relatively Moderate |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
4,946 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 | 62 km | 6 km |
| Apr 9, 2018 | 8 km NNE of Marshall, Oklahoma | M4.6 | 115 km | 5 km |
| Apr 7, 2018 | 5 km WNW of Lucien, Oklahoma | M4.6 | 106 km | 6 km |
| Jul 27, 2015 | 4 km NNE of Crescent, Oklahoma | M4.5 | 134 km | 5 km |
| Jan 31, 2022 | 7 km NW of Medford, Oklahoma | M4.5 | 102 km | 8 km |
| Aug 19, 2014 | 12 km SSW of Guthrie, Oklahoma | M4.4 | 149 km | 5 km |
| Jun 9, 2018 | 8 km E of Nescatunga, Oklahoma | M4.4 | 127 km | 10 km |
| May 17, 2019 | 8 km E of Pond Creek, Oklahoma | M4.4 | 99 km | 5 km |
| Jul 20, 2015 | 7 km SSE of Byron, Oklahoma | M4.4 | 144 km | 4 km |
| Apr 16, 2013 | Oklahoma | M4.4 | 145 km | 6 km |
| Jul 29, 2014 | 9 km E of Nescatunga, Oklahoma | M4.3 | 126 km | 5 km |
| Sep 8, 2017 | 9 km ESE of Jefferson, Oklahoma | M4.3 | 96 km | 6 km |
| Jun 17, 2015 | 6 km ESE of Covington, Oklahoma | M4.3 | 107 km | 6 km |
| Jul 17, 2016 | 5 km W of Lucien, Oklahoma | M4.2 | 106 km | 5 km |
| Jan 26, 2015 | 5 km NNE of Medford, Oklahoma | M4.2 | 94 km | 7 km |
| Feb 5, 2015 | 8 km NE of Cherokee, Oklahoma | M4.2 | 147 km | 4 km |
| Feb 5, 2021 | 5 km WNW of Lucien, Oklahoma | M4.2 | 106 km | 7 km |
| Feb 19, 2021 | 6 km SW of Manchester, Oklahoma | M4.2 | 128 km | 7 km |
| Mar 4, 2018 | 4 km N of Breckinridge, Oklahoma | M4.2 | 110 km | 8 km |
| Mar 29, 2016 | 4 km NNE of Crescent, Oklahoma | M4.2 | 134 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
691 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF5. Total: 137 fatalities, 1,376 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Apr 26, 1991 | EF5 | 94 km | 46.0 mi | 17 |
| May 25, 1955 | EF5 | 45 km | 56.4 mi | 80 |
| May 25, 1955 | EF5 | 61 km | 28.4 mi | 20 |
| May 6, 2024 | EF4 | 72 km | 40.8 mi | 2 |
| May 3, 1999 | EF4 | 79 km | 24.0 mi | 6 |
| Apr 26, 1991 | EF4 | 47 km | 25.0 mi | 1 |
| Apr 26, 1991 | EF4 | 86 km | 32.0 mi | 1 |
| Apr 26, 1991 | EF4 | 99 km | 4.0 mi | 0 |
| Apr 26, 1991 | EF4 | 98 km | 66.0 mi | 0 |
| Apr 26, 1984 | EF4 | 96 km | 22.0 mi | 3 |
| Apr 2, 1956 | EF4 | 31 km | 108.3 mi | 2 |
| Apr 29, 2022 | EF3 | 90 km | 12.7 mi | 0 |
| Apr 14, 2012 | EF3 | 92 km | 13.2 mi | 0 |
| Jun 12, 2004 | EF3 | 78 km | 4.0 mi | 0 |
| May 29, 2004 | EF3 | 98 km | 2.5 mi | 0 |
| May 29, 2004 | EF3 | 99 km | 2.5 mi | 0 |
| May 8, 2003 | EF3 | 40 km | 45.0 mi | 0 |
| May 24, 1998 | EF3 | 86 km | 5.3 mi | 0 |
| Jun 8, 1993 | EF3 | 39 km | 11.5 mi | 0 |
| Jul 2, 1992 | EF3 | 94 km | 4.0 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: UNNAMED (60,976 acres, 2014).
| Year | Name | Acres Burned | Distance |
| 2014 | UNNAMED | 60,976 | 95 km |
| 2014 | UNNAMED | 51,112 | 76 km |
| 2014 | UNNAMED | 36,112 | 59 km |
| 2014 | UNNAMED | 32,901 | 42 km |
| 2018 | DRUMB | 30,422 | 61 km |
| 2021 | CANDY CREEK | 23,167 | 68 km |
| 2014 | UNNAMED | 20,760 | 84 km |
| 2015 | UNNAMED | 20,347 | 23 km |
| 2004 | UNNAMED | 19,648 | 50 km |
| 2014 | RESERVE | 19,016 | 49 km |
| 2018 | WEST 60 | 18,715 | 22 km |
| 2015 | WOLF CREEK | 18,077 | 79 km |
| 2014 | UNNAMED | 17,075 | 52 km |
| 2023 | HWY 123 | 14,980 | 61 km |
| 2016 | BAR-DEW LAKE | 14,806 | 56 km |
| 2014 | SPIDER | 14,587 | 44 km |
| 2014 | UNNAMED | 14,119 | 79 km |
| 2016 | FERGUSON RANCH | 13,625 | 62 km |
| 1996 | UNNAMED | 13,265 | 81 km |
| 2023 | NORTH DRUM | 11,618 | 62 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 35°F (2°C) | 1.0 in | Coldest, Driest |
| February | 38°F (3°C) | 1.3 in | |
| March | 48°F (9°C) | 2.8 in | |
| April | 58°F (14°C) | 3.2 in | |
| May | 66°F (19°C) | 5.0 in | Wettest |
| June | 75°F (24°C) | 4.2 in | |
| July | 80°F (27°C) | 3.1 in | Warmest |
| August | 79°F (26°C) | 3.4 in | |
| September | 71°F (22°C) | 4.5 in | |
| October | 60°F (15°C) | 3.4 in | |
| November | 47°F (8°C) | 2.7 in | |
| December | 36°F (2°C) | 1.5 in |
Grainola has a seasonal temperature swing of 45°F / from 35°F in January to 80°F in July. Total annual precipitation is 36.1 inches, with May being the wettest month (5.0") and January the driest (1.0").