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Weather & Climate in Stillwater, OK
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Stillwater enjoys a temperate climate with an average annual temperature of 60°F (16°C). Winters average 37°F in January while summers reach 83°F in July. The area gets 317 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 36.0 inches. Air quality is rated Good with a median AQI of 45. The city sits at an elevation of 958 feet.
Temperature
37°F Jan (3°C)
83°F Jul (28°C)
| Annual Average | 60.2°F |
| 11% above US avg | |
| January Average | 37°F (3°C) |
| July Average | 83°F (28°C) |
| Sunny Days | 317 days/yr |
Geography
| Elevation | 958 ft (292 m) |
| Area | 0.5 sq mi (1.3 km²) |
| Population Density | 1,639/sq mi |
| Coordinates | 36.1315°N, 97.0745°W |
| Timezone | America/Chicago |
| County | Noble County County |
| Nearest Airport | Stillwater Regional (SWO) 2 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 45.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 44.0 / 100 |
| Social Vulnerability | 86.6 / 100 |
| Community Resilience | 56.9 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Very Low |
| Earthquake | Very Low |
| Wildfire | Relatively Low |
| Flood | Very Low |
| Hail | Relatively Moderate |
| Strong Wind | Relatively Low |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Low |
| Lightning | Very Low |
| Ice Storm | Relatively High |
| Drought | Relatively Moderate |
| Cold Wave | Relatively Moderate |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
6,252 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 | 35 km | 6 km |
| Feb 3, 2024 | 8 km NW of Prague, Oklahoma | M5.1 | 72 km | 3 km |
| Apr 7, 2018 | 5 km WNW of Lucien, Oklahoma | M4.6 | 43 km | 6 km |
| Apr 9, 2018 | 8 km NNE of Marshall, Oklahoma | M4.6 | 46 km | 5 km |
| Dec 7, 2013 | 8 km SW of Arcadia, Oklahoma | M4.5 | 65 km | 8 km |
| Jul 27, 2015 | 4 km NNE of Crescent, Oklahoma | M4.5 | 47 km | 5 km |
| Jan 31, 2022 | 7 km NW of Medford, Oklahoma | M4.5 | 103 km | 8 km |
| Jul 20, 2015 | 7 km SSE of Byron, Oklahoma | M4.4 | 132 km | 4 km |
| Aug 19, 2014 | 12 km SSW of Guthrie, Oklahoma | M4.4 | 53 km | 5 km |
| Apr 16, 2013 | Oklahoma | M4.4 | 50 km | 6 km |
| Jun 9, 2018 | 8 km E of Nescatunga, Oklahoma | M4.4 | 113 km | 10 km |
| May 17, 2019 | 8 km E of Pond Creek, Oklahoma | M4.4 | 82 km | 5 km |
| Jul 29, 2014 | 9 km E of Nescatunga, Oklahoma | M4.3 | 111 km | 5 km |
| Sep 8, 2017 | 9 km ESE of Jefferson, Oklahoma | M4.3 | 83 km | 6 km |
| Jun 16, 2014 | 7 km NNE of Lake Aluma, Oklahoma | M4.3 | 67 km | 5 km |
| Jun 17, 2015 | 6 km ESE of Covington, Oklahoma | M4.3 | 44 km | 6 km |
| Jan 13, 2024 | 6 km W of Arcadia, Oklahoma | M4.3 | 59 km | 7 km |
| Mar 30, 2014 | 2 km S of Marshall, Oklahoma | M4.2 | 50 km | 5 km |
| Mar 5, 2018 | 5 km NNW of Breckinridge, Oklahoma | M4.2 | 72 km | 8 km |
| Mar 4, 2018 | 4 km N of Breckinridge, Oklahoma | M4.2 | 71 km | 8 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
934 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF5. Total: 159 fatalities, 2,135 injuries.
| Date | Rating | Distance | Path | Fatalities |
| May 5, 1960 | EF5 | 96 km | 71.8 mi | 5 |
| May 25, 1955 | EF5 | 84 km | 56.4 mi | 80 |
| May 25, 1955 | EF5 | 68 km | 28.4 mi | 20 |
| May 6, 2024 | EF4 | 68 km | 40.8 mi | 2 |
| May 19, 2013 | EF4 | 100 km | 23.0 mi | 2 |
| May 8, 2003 | EF4 | 98 km | 17.3 mi | 0 |
| May 3, 1999 | EF4 | 61 km | 35.0 mi | 2 |
| May 3, 1999 | EF4 | 82 km | 15.0 mi | 1 |
| Apr 26, 1991 | EF4 | 54 km | 66.0 mi | 0 |
| Apr 26, 1991 | EF4 | 50 km | 32.0 mi | 1 |
| Apr 29, 1984 | EF4 | 56 km | 27.0 mi | 1 |
| Apr 26, 1984 | EF4 | 43 km | 22.0 mi | 3 |
| May 17, 1981 | EF4 | 97 km | 33.6 mi | 0 |
| Apr 30, 1978 | EF4 | 86 km | 9.3 mi | 0 |
| Jun 8, 1974 | EF4 | 43 km | 29.0 mi | 14 |
| Oct 5, 1970 | EF4 | 90 km | 25.0 mi | 4 |
| Apr 2, 1956 | EF4 | 77 km | 108.3 mi | 2 |
| May 1, 1954 | EF4 | 86 km | 59.2 mi | 0 |
| Nov 3, 2024 | EF3 | 83 km | 25.1 mi | 0 |
| Nov 3, 2024 | EF3 | 91 km | 2.4 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 | 62 km |
| 2018 | DRUMB | 30,422 | 79 km |
| 2014 | RESERVE | 19,016 | 65 km |
| 2018 | WEST 60 | 18,715 | 90 km |
| 2014 | SPIDER | 14,587 | 74 km |
| 2023 | NORTH DRUM | 11,618 | 81 km |
| 2023 | ZINK | 11,332 | 84 km |
| 2017 | MILSAP | 10,879 | 72 km |
| 2011 | GREYHORSE | 10,411 | 58 km |
| 2011 | UNNAMED | 10,205 | 68 km |
| 2015 | Z BAR 7 | 10,170 | 99 km |
| 2016 | MAKER | 9,940 | 79 km |
| 2022 | FRAZIER | 9,706 | 74 km |
| 2024 | BOWMAN | 9,422 | 59 km |
| 2022 | BUG CREEK | 9,106 | 63 km |
| 2003 | WOOLAROC | 8,859 | 99 km |
| 2021 | JAVINE | 8,699 | 98 km |
| 2009 | MULHALL-PAYNE COUNTY | 8,186 | 23 km |
| 2022 | LIBERTY RANCH | 7,583 | 100 km |
| 2024 | ZINK | 7,434 | 72 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 37°F (3°C) | 1.1 in | Coldest, Driest |
| February | 41°F (5°C) | 1.6 in | |
| March | 50°F (10°C) | 3.2 in | |
| April | 60°F (15°C) | 3.5 in | |
| May | 68°F (20°C) | 5.3 in | Wettest |
| June | 77°F (25°C) | 4.2 in | |
| July | 83°F (28°C) | 2.8 in | Warmest |
| August | 81°F (27°C) | 2.9 in | |
| September | 73°F (23°C) | 4.2 in | |
| October | 62°F (16°C) | 3.1 in | |
| November | 49°F (9°C) | 2.5 in | |
| December | 39°F (4°C) | 1.7 in |
Stillwater has a seasonal temperature swing of 45°F / from 37°F in January to 83°F in July. Total annual precipitation is 36.1 inches, with May being the wettest month (5.3") and January the driest (1.1").