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Weather & Climate in Terlton, OK
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Terlton enjoys a temperate climate with an average annual temperature of 61°F (16°C). Winters average 39°F in January while summers reach 82°F in July. The area gets 305 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 41.8 inches. The area receives 8.4 inches of snow annually. Air quality is rated Good with a median AQI of 45. The city sits at an elevation of 777 feet.
Temperature
39°F Jan (4°C)
82°F Jul (28°C)
| Annual Average | 60.8°F |
| 13% above US avg | |
| January Average | 39°F (4°C) |
| July Average | 82°F (28°C) |
| Sunny Days | 305 days/yr |
Geography
| Elevation | 777 ft (237 m) |
| Area | 0.3 sq mi (0.6 km²) |
| Population Density | 306/sq mi |
| Coordinates | 36.1876°N, 96.4918°W |
| Timezone | America/Chicago |
| County | Pawnee County County |
| Nearest Airport | Stillwater Regional (SWO) 33 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 45.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 48.1 / 100 |
| Social Vulnerability | 77.4 / 100 |
| Community Resilience | 27.8 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Very Low |
| Earthquake | Very Low |
| Wildfire | Relatively Low |
| Flood | Relatively Low |
| Hail | Relatively Low |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Low |
| Lightning | Very Low |
| Ice Storm | Relatively High |
| Drought | Relatively Moderate |
| Cold Wave | Relatively Moderate |
| Landslide | Relatively Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
5,013 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 | 47 km | 6 km |
| Feb 3, 2024 | 8 km NW of Prague, Oklahoma | M5.1 | 77 km | 3 km |
| Apr 7, 2018 | 5 km WNW of Lucien, Oklahoma | M4.6 | 93 km | 6 km |
| Apr 9, 2018 | 8 km NNE of Marshall, Oklahoma | M4.6 | 97 km | 5 km |
| Jul 27, 2015 | 4 km NNE of Crescent, Oklahoma | M4.5 | 100 km | 5 km |
| Jan 31, 2022 | 7 km NW of Medford, Oklahoma | M4.5 | 138 km | 8 km |
| Dec 7, 2013 | 8 km SW of Arcadia, Oklahoma | M4.5 | 103 km | 8 km |
| Apr 16, 2013 | Oklahoma | M4.4 | 78 km | 6 km |
| May 17, 2019 | 8 km E of Pond Creek, Oklahoma | M4.4 | 121 km | 5 km |
| Aug 19, 2014 | 12 km SSW of Guthrie, Oklahoma | M4.4 | 99 km | 5 km |
| Sep 8, 2017 | 9 km ESE of Jefferson, Oklahoma | M4.3 | 121 km | 6 km |
| Jun 17, 2015 | 6 km ESE of Covington, Oklahoma | M4.3 | 93 km | 6 km |
| Jun 16, 2014 | 7 km NNE of Lake Aluma, Oklahoma | M4.3 | 105 km | 5 km |
| Jan 13, 2024 | 6 km W of Arcadia, Oklahoma | M4.3 | 100 km | 7 km |
| Aug 3, 2017 | 6 km ENE of Edmond, Oklahoma | M4.2 | 100 km | 5 km |
| Mar 5, 2018 | 5 km NNW of Breckinridge, Oklahoma | M4.2 | 117 km | 8 km |
| Jul 17, 2016 | 5 km W of Lucien, Oklahoma | M4.2 | 92 km | 5 km |
| Mar 4, 2018 | 4 km N of Breckinridge, Oklahoma | M4.2 | 117 km | 8 km |
| Mar 30, 2014 | 2 km S of Marshall, Oklahoma | M4.2 | 102 km | 5 km |
| Feb 5, 2021 | 5 km WNW of Lucien, Oklahoma | M4.2 | 93 km | 7 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
868 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF5. Total: 165 fatalities, 1,870 injuries.
| Date | Rating | Distance | Path | Fatalities |
| May 25, 1955 | EF5 | 97 km | 56.4 mi | 80 |
| May 25, 1955 | EF5 | 92 km | 28.4 mi | 20 |
| May 6, 2024 | EF4 | 20 km | 40.8 mi | 2 |
| Apr 24, 1993 | EF4 | 60 km | 5.5 mi | 7 |
| Apr 26, 1991 | EF4 | 3 km | 32.0 mi | 1 |
| Apr 26, 1991 | EF4 | 99 km | 66.0 mi | 0 |
| Apr 26, 1991 | EF4 | 75 km | 4.0 mi | 0 |
| Apr 29, 1984 | EF4 | 26 km | 27.0 mi | 1 |
| Apr 26, 1984 | EF4 | 15 km | 22.0 mi | 3 |
| May 17, 1981 | EF4 | 94 km | 33.6 mi | 0 |
| Jun 8, 1974 | EF4 | 30 km | 29.0 mi | 14 |
| Apr 2, 1956 | EF4 | 82 km | 108.3 mi | 2 |
| May 25, 2024 | EF3 | 67 km | 23.9 mi | 2 |
| May 19, 2013 | EF3 | 86 km | 20.8 mi | 0 |
| May 29, 2004 | EF3 | 41 km | 7.5 mi | 0 |
| May 8, 2003 | EF3 | 48 km | 45.0 mi | 0 |
| May 3, 1999 | EF3 | 66 km | 16.0 mi | 0 |
| Oct 4, 1998 | EF3 | 93 km | 10.0 mi | 0 |
| Jun 8, 1993 | EF3 | 88 km | 11.5 mi | 0 |
| Apr 24, 1993 | EF3 | 61 km | 8.0 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 | 18 km |
| 2014 | UNNAMED | 51,112 | 95 km |
| 2014 | UNNAMED | 36,112 | 61 km |
| 2014 | UNNAMED | 32,901 | 76 km |
| 2018 | DRUMB | 30,422 | 36 km |
| 2021 | CANDY CREEK | 23,167 | 57 km |
| 2015 | UNNAMED | 20,347 | 87 km |
| 2004 | UNNAMED | 19,648 | 90 km |
| 2014 | RESERVE | 19,016 | 36 km |
| 2018 | WEST 60 | 18,715 | 67 km |
| 2015 | WOLF CREEK | 18,077 | 97 km |
| 2014 | UNNAMED | 17,075 | 81 km |
| 2023 | HWY 123 | 14,980 | 66 km |
| 2016 | BAR-DEW LAKE | 14,806 | 82 km |
| 2014 | SPIDER | 14,587 | 43 km |
| 2014 | UNNAMED | 14,119 | 57 km |
| 2016 | PHAROAH | 13,579 | 81 km |
| 2023 | NORTH DRUM | 11,618 | 37 km |
| 2023 | ZINK | 11,332 | 33 km |
| 2017 | MILSAP | 10,879 | 23 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 39°F (4°C) | 1.3 in | Coldest, Driest |
| February | 41°F (5°C) | 1.9 in | |
| March | 50°F (10°C) | 3.3 in | |
| April | 60°F (16°C) | 3.2 in | |
| May | 68°F (20°C) | 4.8 in | Wettest |
| June | 76°F (25°C) | 4.0 in | |
| July | 82°F (28°C) | 2.9 in | Warmest |
| August | 81°F (27°C) | 3.1 in | |
| September | 73°F (23°C) | 4.8 in | |
| October | 61°F (16°C) | 3.1 in | |
| November | 49°F (9°C) | 2.8 in | |
| December | 39°F (4°C) | 1.7 in |
Terlton has a seasonal temperature swing of 43°F / from 39°F in January to 82°F in July. Total annual precipitation is 36.8 inches, with May being the wettest month (4.8") and January the driest (1.3").