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Weather & Climate in Helena, OK
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Helena enjoys a temperate climate with an average annual temperature of 59°F (15°C). Winters average 35°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 32.1 inches. The area receives 12.7 inches of snow annually. Air quality is rated Good with a median AQI of 45. The city sits at an elevation of 1,401 feet.
Temperature
35°F Jan (2°C)
83°F Jul (28°C)
| Annual Average | 58.8°F |
| 9% above US avg | |
| January Average | 35°F (2°C) |
| July Average | 83°F (28°C) |
| Sunny Days | 317 days/yr |
Geography
| Elevation | 1,401 ft (427 m) |
| Area | 0.4 sq mi (1.1 km²) |
| Population Density | 3,627/sq mi |
| Coordinates | 36.5465°N, 98.2719°W |
| Timezone | America/Chicago |
| County | Alfalfa County County |
| Nearest Airport | Enid Woodring Regional (WDG) 29 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 45.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 40.7 / 100 |
| Social Vulnerability | 69.4 / 100 |
| Community Resilience | 45.8 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Very Low |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Very Low |
| Hail | Relatively Low |
| Strong Wind | Relatively Low |
| Heat Wave | Relatively Low |
| Winter Weather | Very 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
6,735 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 | 121 km | 6 km |
| Feb 13, 2016 | 18 km SE of Waynoka, Oklahoma | M5.1 | 40 km | 8 km |
| Jan 7, 2016 | 16 km SE of Waynoka, Oklahoma | M4.7 | 41 km | 4 km |
| Apr 7, 2018 | 5 km WNW of Lucien, Oklahoma | M4.6 | 73 km | 6 km |
| Apr 9, 2018 | 8 km NNE of Marshall, Oklahoma | M4.6 | 72 km | 5 km |
| Jan 31, 2022 | 7 km NW of Medford, Oklahoma | M4.5 | 55 km | 8 km |
| Dec 7, 2013 | 8 km SW of Arcadia, Oklahoma | M4.5 | 131 km | 8 km |
| Jul 27, 2015 | 4 km NNE of Crescent, Oklahoma | M4.5 | 88 km | 5 km |
| Apr 16, 2013 | Oklahoma | M4.4 | 143 km | 6 km |
| Jan 7, 2016 | 16 km SE of Waynoka, Oklahoma | M4.4 | 43 km | 7 km |
| Jul 9, 2016 | 17 km SE of Waynoka, Oklahoma | M4.4 | 44 km | 7 km |
| Jul 20, 2015 | 7 km SSE of Byron, Oklahoma | M4.4 | 33 km | 4 km |
| Jan 7, 2016 | 17 km SE of Waynoka, Oklahoma | M4.4 | 42 km | 7 km |
| Jun 9, 2018 | 8 km E of Nescatunga, Oklahoma | M4.4 | 31 km | 10 km |
| Aug 19, 2014 | 12 km SSW of Guthrie, Oklahoma | M4.4 | 112 km | 5 km |
| May 17, 2019 | 8 km E of Pond Creek, Oklahoma | M4.4 | 52 km | 5 km |
| Jun 16, 2014 | 7 km NNE of Lake Aluma, Oklahoma | M4.3 | 132 km | 5 km |
| Jul 29, 2014 | 9 km E of Nescatunga, Oklahoma | M4.3 | 31 km | 5 km |
| Sep 8, 2017 | 9 km ESE of Jefferson, Oklahoma | M4.3 | 55 km | 6 km |
| Jun 17, 2015 | 6 km ESE of Covington, Oklahoma | M4.3 | 73 km | 6 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
685 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF5. Total: 26 fatalities, 451 injuries.
| Date | Rating | Distance | Path | Fatalities |
| May 25, 1955 | EF5 | 91 km | 28.4 mi | 20 |
| May 12, 2004 | EF4 | 82 km | 1.2 mi | 0 |
| May 3, 1999 | EF4 | 91 km | 35.0 mi | 2 |
| May 3, 1999 | EF4 | 74 km | 15.0 mi | 1 |
| Apr 26, 1991 | EF4 | 66 km | 66.0 mi | 0 |
| May 2, 1979 | EF4 | 13 km | 20.6 mi | 1 |
| Apr 17, 1976 | EF4 | 63 km | 19.5 mi | 0 |
| Jun 10, 1967 | EF4 | 80 km | 0.1 mi | 0 |
| Mar 16, 1965 | EF4 | 17 km | 82.7 mi | 0 |
| May 19, 2012 | EF3 | 81 km | 9.7 mi | 0 |
| May 19, 2012 | EF3 | 90 km | 9.7 mi | 0 |
| Apr 14, 2012 | EF3 | 80 km | 18.1 mi | 0 |
| May 24, 2011 | EF3 | 64 km | 13.2 mi | 1 |
| May 10, 2010 | EF3 | 36 km | 47.7 mi | 0 |
| May 23, 2008 | EF3 | 88 km | 11.0 mi | 0 |
| Apr 17, 2002 | EF3 | 88 km | 8.0 mi | 0 |
| May 3, 1999 | EF3 | 92 km | 13.0 mi | 0 |
| May 3, 1999 | EF3 | 100 km | 21.0 mi | 0 |
| May 24, 1998 | EF3 | 66 km | 5.3 mi | 0 |
| May 26, 1991 | EF3 | 96 km | 12.5 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: ANDERSON CREEK FIRE (374,523 acres, 2016).
| Year | Name | Acres Burned | Distance |
| 2016 | ANDERSON CREEK FIRE | 374,523 | 80 km |
| 2018 | RHEA | 277,949 | 89 km |
| 1996 | UNNAMED | 88,943 | 79 km |
| 2016 | 350 COMPLEX | 58,055 | 89 km |
| 2018 | 34 COMPLEX | 57,533 | 97 km |
| 2017 | OKS - SELMAN | 44,767 | 96 km |
| 2009 | PUTNAM | 42,995 | 89 km |
| 2009 | CHESTER | 34,432 | 56 km |
| 2015 | BOILING SPRINGS FIRE | 20,264 | 87 km |
| 2022 | 217 | 18,293 | 74 km |
| 2022 | 720 FIRE | 8,761 | 60 km |
| 2009 | MULHALL-PAYNE COUNTY | 8,186 | 98 km |
| 2008 | UNNAMED | 6,276 | 92 km |
| 2020 | EWB | 5,706 | 78 km |
| 2009 | CLEO | 5,063 | 29 km |
| 2008 | BYRON | 5,033 | 39 km |
| 2007 | SALT FORK DELTA | 4,784 | 29 km |
| 2008 | LAKE CITY | 4,643 | 97 km |
| 2007 | AETNA FIRE | 4,579 | 89 km |
| 2008 | UNNAMED | 4,566 | 89 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 35°F (2°C) | 0.9 in | Coldest, Driest |
| February | 39°F (4°C) | 1.2 in | |
| March | 48°F (9°C) | 2.5 in | |
| April | 58°F (14°C) | 2.6 in | |
| May | 67°F (20°C) | 4.2 in | Wettest |
| June | 77°F (25°C) | 3.9 in | |
| July | 83°F (28°C) | 2.8 in | Warmest |
| August | 81°F (27°C) | 3.0 in | |
| September | 73°F (23°C) | 3.2 in | |
| October | 61°F (16°C) | 2.3 in | |
| November | 47°F (8°C) | 1.9 in | |
| December | 37°F (3°C) | 1.1 in |
Helena has a seasonal temperature swing of 48°F / from 35°F in January to 83°F in July. Total annual precipitation is 29.3 inches, with May being the wettest month (4.2") and January the driest (0.9").