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Weather & Climate in Grayson, OK
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Grayson 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 662 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 | 662 ft (202 m) |
| Area | 1.1 sq mi (2.9 km²) |
| Population Density | 133/sq mi |
| Coordinates | 35.5054°N, 95.8716°W |
| Timezone | America/Chicago |
| County | Okmulgee County County |
| Nearest Airport | Okmulgee Regional/Paul And Betty Abbott Field (OKM) 14 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
2,726 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 | 140 km | 6 km |
| Feb 3, 2024 | 8 km NW of Prague, Oklahoma | M5.1 | 81 km | 3 km |
| Dec 7, 2013 | 8 km SW of Arcadia, Oklahoma | M4.5 | 138 km | 8 km |
| Sep 6, 1997 | 6 km N of Tupelo, Oklahoma | M4.5 | 107 km | 5 km |
| Apr 16, 2013 | Oklahoma | M4.4 | 112 km | 6 km |
| Aug 19, 2014 | 12 km SSW of Guthrie, Oklahoma | M4.4 | 147 km | 5 km |
| Jun 16, 2014 | 7 km NNE of Lake Aluma, Oklahoma | M4.3 | 138 km | 5 km |
| Jan 13, 2024 | 6 km W of Arcadia, Oklahoma | M4.3 | 139 km | 7 km |
| Aug 3, 2017 | 6 km ENE of Edmond, Oklahoma | M4.2 | 140 km | 5 km |
| Apr 19, 2015 | 6 km W of Langston, Oklahoma | M4.2 | 141 km | 3 km |
| Apr 7, 2016 | 1 km E of Luther, Oklahoma | M4.2 | 119 km | 6 km |
| Jan 1, 2016 | 6 km ENE of Edmond, Oklahoma | M4.2 | 140 km | 6 km |
| Apr 16, 2013 | 3 km WSW of Wellston, Oklahoma | M4.2 | 113 km | 7 km |
| Jul 14, 2017 | 10 km WSW of Shamrock, Oklahoma | M4.2 | 83 km | 7 km |
| Apr 7, 2014 | 6 km NNW of Meridian, Oklahoma | M4.2 | 134 km | 5 km |
| Apr 27, 2015 | 7 km WSW of Langston, Oklahoma | M4.1 | 139 km | 5 km |
| Feb 27, 2010 | 8 km SE of Sparks, Oklahoma | M4.1 | 80 km | 5 km |
| Jun 18, 2014 | 7 km NE of Lake Aluma, Oklahoma | M4.1 | 138 km | 5 km |
| Feb 9, 2014 | 6 km SSW of Langston, Oklahoma | M4.1 | 135 km | 5 km |
| Jan 13, 2024 | 6 km ENE of Edmond, Oklahoma | M4.1 | 140 km | 7 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
858 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF5. Total: 96 fatalities, 1,437 injuries.
| Date | Rating | Distance | Path | Fatalities |
| May 5, 1960 | EF5 | 99 km | 71.8 mi | 5 |
| Apr 24, 1993 | EF4 | 72 km | 5.5 mi | 7 |
| May 11, 1992 | EF4 | 84 km | 10.0 mi | 0 |
| Apr 26, 1991 | EF4 | 94 km | 32.0 mi | 1 |
| Apr 29, 1984 | EF4 | 75 km | 27.0 mi | 1 |
| Apr 26, 1984 | EF4 | 92 km | 22.0 mi | 3 |
| May 17, 1981 | EF4 | 68 km | 33.6 mi | 0 |
| Jun 8, 1974 | EF4 | 86 km | 29.0 mi | 14 |
| May 26, 1973 | EF4 | 50 km | 3.6 mi | 5 |
| Oct 5, 1970 | EF4 | 98 km | 25.0 mi | 4 |
| May 5, 1960 | EF4 | 87 km | 62.4 mi | 16 |
| Apr 28, 1950 | EF4 | 67 km | 4.5 mi | 5 |
| May 25, 2024 | EF3 | 90 km | 23.9 mi | 2 |
| Apr 27, 2024 | EF3 | 76 km | 27.9 mi | 2 |
| Mar 12, 2006 | EF3 | 96 km | 29.0 mi | 0 |
| May 29, 2004 | EF3 | 75 km | 7.5 mi | 0 |
| Jun 1, 1999 | EF3 | 76 km | 2.0 mi | 2 |
| Jun 1, 1999 | EF3 | 33 km | 4.5 mi | 0 |
| May 3, 1999 | EF3 | 86 km | 16.0 mi | 0 |
| Oct 4, 1998 | EF3 | 83 km | 10.0 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 | 77 km |
| 2004 | UNNAMED | 27,091 | 46 km |
| 2011 | HOG TRAP | 22,895 | 50 km |
| 2009 | BURNT TRUST | 22,578 | 38 km |
| 2007 | UNNAMED | 18,089 | 70 km |
| 1991 | UNNAMED | 16,700 | 46 km |
| 2005 | CABINESS | 14,646 | 57 km |
| 2004 | UNNAMED | 14,138 | 19 km |
| 2009 | 40 ACRE TURNAROUND | 13,985 | 89 km |
| 2016 | PHAROAH | 13,579 | 21 km |
| 2004 | UNNAMED | 12,086 | 66 km |
| 2011 | UNNAMED | 11,348 | 54 km |
| 2023 | ZINK | 11,332 | 95 km |
| 2017 | MILSAP | 10,879 | 100 km |
| 2011 | UNNAMED | 10,205 | 73 km |
| 2016 | MAKER | 9,940 | 94 km |
| 2005 | WEWOKA CREEK | 9,921 | 62 km |
| 2022 | FRAZIER | 9,706 | 99 km |
| 1996 | UNNAMED | 9,481 | 45 km |
| 2011 | TI VALLEY | 9,205 | 91 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 37°F (3°C) | 1.7 in | Coldest, Driest |
| February | 42°F (6°C) | 2.2 in | |
| March | 51°F (11°C) | 3.7 in | |
| April | 60°F (16°C) | 4.1 in | |
| May | 68°F (20°C) | 5.6 in | Wettest |
| June | 76°F (25°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) | 4.8 in | |
| October | 62°F (17°C) | 4.1 in | |
| November | 50°F (10°C) | 3.5 in | |
| December | 41°F (5°C) | 2.4 in |
Grayson has a seasonal temperature swing of 45°F / from 37°F in January to 82°F in July. Total annual precipitation is 41.9 inches, with May being the wettest month (5.6") and January the driest (1.7").