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Weather & Climate in Simms, OK
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Simms enjoys a temperate climate with an average annual temperature of 61°F (16°C). Winters average 38°F in January while summers reach 82°F in July. The area gets 310 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 47.4 inches (wetter than the 38-inch national average). The area receives 4.6 inches of snow annually. Air quality is rated Good with a median AQI of 45. The city sits at an elevation of 520 feet.
Temperature
38°F Jan (3°C)
82°F Jul (28°C)
| Annual Average | 60.5°F |
| 12% above US avg | |
| January Average | 38°F (3°C) |
| July Average | 82°F (28°C) |
| Sunny Days | 310 days/yr |
Geography
| Elevation | 520 ft (158 m) |
| Area | 14.1 sq mi (36.5 km²) |
| Population Density | 35/sq mi |
| Coordinates | 35.3987°N, 95.1647°W |
| Timezone | America/Chicago |
| County | Haskell County County |
| Nearest Airport | Muskogee-Davis Regional (MKO) 21 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 45.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 30.5 / 100 |
| Social Vulnerability | 41.7 / 100 |
| Community Resilience | 9.6 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Very Low |
| Earthquake | Very Low |
| Wildfire | Relatively Moderate |
| Flood | Very Low |
| Hail | Relatively Low |
| Strong Wind | Relatively Low |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Low |
| Lightning | Relatively Low |
| Ice Storm | Relatively Moderate |
| Drought | Relatively High |
| Cold Wave | Very Low |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
323 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.1.
| Feb 3, 2024 | 8 km NW of Prague, Oklahoma | M5.1 | 146 km | 3 km |
| Sep 6, 1997 | 6 km N of Tupelo, Oklahoma | M4.5 | 142 km | 5 km |
| Jul 14, 2017 | 10 km WSW of Shamrock, Oklahoma | M4.2 | 147 km | 7 km |
| Feb 27, 2010 | 8 km SE of Sparks, Oklahoma | M4.1 | 145 km | 5 km |
| Apr 3, 2012 | 8 km SSW of Pittsburg, Oklahoma | M4.1 | 107 km | 5 km |
| May 10, 2012 | 9 km WNW of Prague, Oklahoma | M3.8 | 147 km | 5 km |
| Sep 16, 2017 | 10 km WSW of Shamrock, Oklahoma | M3.8 | 147 km | 7 km |
| Jan 9, 2014 | 8 km SSE of Sparks, Oklahoma | M3.8 | 147 km | 3 km |
| Apr 16, 2012 | 8 km NW of Prague, Oklahoma | M3.8 | 145 km | 4 km |
| Aug 24, 2021 | 1 km S of Quinton, Oklahoma | M3.7 | 37 km | 7 km |
| Aug 18, 2019 | 1 km ENE of Quinton, Oklahoma | M3.7 | 35 km | 6 km |
| Mar 22, 2017 | 8 km SW of Shamrock, Oklahoma | M3.7 | 144 km | 5 km |
| Mar 22, 2010 | 8 km SE of Sparks, Oklahoma | M3.7 | 145 km | 8 km |
| Apr 7, 2021 | 7 km WSW of Horntown, Oklahoma | M3.6 | 111 km | 29 km |
| Sep 11, 2017 | 8 km ESE of Sparks, Oklahoma | M3.6 | 144 km | 5 km |
| Jul 14, 2017 | 10 km WSW of Shamrock, Oklahoma | M3.6 | 147 km | 7 km |
| Jul 14, 2017 | 10 km WSW of Shamrock, Oklahoma | M3.5 | 147 km | 7 km |
| Aug 3, 2017 | 9 km WSW of Shamrock, Oklahoma | M3.5 | 146 km | 6 km |
| Jan 4, 2013 | 6 km NW of Cromwell, Oklahoma | M3.5 | 122 km | 5 km |
| Aug 18, 2014 | 4 km NW of Cromwell, Oklahoma | M3.5 | 120 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
720 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF5. Total: 102 fatalities, 1,213 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Mar 26, 1976 | EF5 | 48 km | 11.9 mi | 2 |
| Mar 26, 1976 | EF4 | 70 km | 10.7 mi | 1 |
| May 26, 1973 | EF4 | 22 km | 3.6 mi | 5 |
| Apr 19, 1968 | EF4 | 84 km | 2.0 mi | 14 |
| May 5, 1961 | EF4 | 75 km | 26.4 mi | 16 |
| May 5, 1960 | EF4 | 59 km | 62.4 mi | 16 |
| May 5, 1960 | EF4 | 56 km | 5.4 mi | 5 |
| Jan 22, 1957 | EF4 | 44 km | 0.1 mi | 10 |
| Dec 31, 2010 | EF3 | 86 km | 21.1 mi | 4 |
| Mar 12, 2006 | EF3 | 78 km | 29.0 mi | 0 |
| Jun 1, 1999 | EF3 | 32 km | 4.5 mi | 0 |
| Jun 1, 1999 | EF3 | 64 km | 2.0 mi | 2 |
| May 4, 1999 | EF3 | 59 km | 38.2 mi | 0 |
| May 26, 1997 | EF3 | 70 km | 5.0 mi | 0 |
| Apr 21, 1996 | EF3 | 65 km | 10.1 mi | 2 |
| Apr 26, 1984 | EF3 | 81 km | 22.0 mi | 8 |
| Nov 22, 1983 | EF3 | 83 km | 3.0 mi | 0 |
| Nov 22, 1983 | EF3 | 63 km | 19.0 mi | 0 |
| Dec 2, 1982 | EF3 | 85 km | 1.0 mi | 0 |
| Apr 19, 1981 | EF3 | 58 km | 3.0 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: UNNAMED (27,091 acres, 2004).
| Year | Name | Acres Burned | Distance |
| 2004 | UNNAMED | 27,091 | 87 km |
| 2011 | HOG TRAP | 22,895 | 94 km |
| 2009 | BURNT TRUST | 22,578 | 77 km |
| 2007 | UNNAMED | 18,089 | 34 km |
| 1991 | UNNAMED | 16,700 | 83 km |
| 2005 | CABINESS | 14,646 | 91 km |
| 2004 | UNNAMED | 14,138 | 62 km |
| 2009 | 40 ACRE TURNAROUND | 13,985 | 78 km |
| 1998 | UNNAMED | 13,929 | 98 km |
| 2016 | PHAROAH | 13,579 | 86 km |
| 2016 | WEST CAVANAL FIRE | 13,100 | 52 km |
| 2004 | UNNAMED | 12,086 | 30 km |
| 2016 | UNNAMED | 11,929 | 98 km |
| 2011 | UNNAMED | 11,348 | 89 km |
| 2007 | UNNAMED | 10,593 | 100 km |
| 1996 | UNNAMED | 9,481 | 81 km |
| 2021 | BILLY CREEK | 9,236 | 89 km |
| 2011 | TI VALLEY | 9,205 | 81 km |
| 1996 | UNNAMED | 9,165 | 88 km |
| 2007 | EASY TO HANDLE | 9,120 | 97 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 38°F (3°C) | 2.1 in | Coldest, Driest |
| February | 43°F (6°C) | 2.5 in | |
| March | 52°F (11°C) | 4.1 in | |
| April | 61°F (16°C) | 4.4 in | |
| May | 69°F (20°C) | 5.7 in | Wettest |
| June | 76°F (25°C) | 4.3 in | |
| July | 82°F (28°C) | 2.9 in | Warmest |
| August | 81°F (27°C) | 2.9 in | |
| September | 73°F (23°C) | 4.9 in | |
| October | 62°F (17°C) | 4.4 in | |
| November | 51°F (10°C) | 4.2 in | |
| December | 41°F (5°C) | 3.0 in |
Simms has a seasonal temperature swing of 44°F / from 38°F in January to 82°F in July. Total annual precipitation is 45.3 inches, with May being the wettest month (5.7") and January the driest (2.1").