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Weather & Climate in Mill Creek, OK
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Mill Creek enjoys a temperate climate with an average annual temperature of 62°F (17°C). Winters average 41°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 1,036 feet.
Temperature
41°F Jan (5°C)
82°F Jul (28°C)
| Annual Average | 61.9°F |
| 15% above US avg | |
| January Average | 41°F (5°C) |
| July Average | 82°F (28°C) |
| Sunny Days | 318 days/yr |
Geography
| Elevation | 1,036 ft (316 m) |
| Area | 0.4 sq mi (1.0 km²) |
| Population Density | 653/sq mi |
| Coordinates | 34.4026°N, 96.8252°W |
| Timezone | America/Chicago |
| County | Johnston County County |
| Nearest Airport | Ada Regional (ADT) 29 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 45.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 25.4 / 100 |
| Social Vulnerability | 91.2 / 100 |
| Community Resilience | 23.7 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Very Low |
| Earthquake | Very Low |
| Wildfire | Relatively Low |
| Flood | Very Low |
| Hail | Relatively Low |
| Strong Wind | Relatively Low |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Low |
| Lightning | Relatively Low |
| Ice Storm | Relatively High |
| Drought | Relatively Moderate |
| Cold Wave | Relatively Low |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
1,109 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 | 126 km | 3 km |
| Dec 7, 2013 | 8 km SW of Arcadia, Oklahoma | M4.5 | 143 km | 8 km |
| Sep 6, 1997 | 6 km N of Tupelo, Oklahoma | M4.5 | 46 km | 5 km |
| Apr 16, 2013 | Oklahoma | M4.4 | 145 km | 6 km |
| Jun 16, 2014 | 7 km NNE of Lake Aluma, Oklahoma | M4.3 | 142 km | 5 km |
| Jan 13, 2024 | 6 km W of Arcadia, Oklahoma | M4.3 | 150 km | 7 km |
| Jan 18, 1995 | 4 km SSE of Erin Springs, Oklahoma | M4.2 | 82 km | 5 km |
| Apr 7, 2016 | 1 km E of Luther, Oklahoma | M4.2 | 144 km | 6 km |
| Apr 16, 2013 | 3 km WSW of Wellston, Oklahoma | M4.2 | 144 km | 7 km |
| Apr 3, 2012 | 8 km SSW of Pittsburg, Oklahoma | M4.1 | 91 km | 5 km |
| Jun 18, 2014 | 7 km NE of Lake Aluma, Oklahoma | M4.1 | 142 km | 5 km |
| Feb 27, 2010 | 8 km SE of Sparks, Oklahoma | M4.1 | 128 km | 5 km |
| Aug 17, 2016 | 2 km SW of Wellston, Oklahoma | M4.0 | 144 km | 6 km |
| Nov 15, 1990 | 5 km SSE of Erin Springs, Oklahoma | M3.9 | 81 km | 5 km |
| Jul 15, 2014 | 3 km N of Harrah, Oklahoma | M3.9 | 128 km | 7 km |
| Jan 9, 2014 | 8 km SSE of Sparks, Oklahoma | M3.8 | 127 km | 3 km |
| Feb 8, 2002 | 8 km SW of Elgin, Oklahoma | M3.8 | 145 km | 5 km |
| Jan 15, 2010 | 3 km ENE of Jones, Oklahoma | M3.8 | 136 km | 8 km |
| Nov 5, 2013 | 8 km SSW of Arcadia, Oklahoma | M3.8 | 143 km | 5 km |
| May 10, 2012 | 9 km WNW of Prague, Oklahoma | M3.8 | 123 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
721 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF5. Total: 67 fatalities, 762 injuries.
| Date | Rating | Distance | Path | Fatalities |
| May 5, 1960 | EF5 | 98 km | 71.8 mi | 5 |
| Apr 27, 2024 | EF4 | 62 km | 26.8 mi | 1 |
| May 9, 2016 | EF4 | 52 km | 8.9 mi | 1 |
| May 24, 2011 | EF4 | 99 km | 23.1 mi | 0 |
| Feb 10, 2009 | EF4 | 90 km | 37.0 mi | 8 |
| May 11, 1992 | EF4 | 89 km | 10.0 mi | 0 |
| Apr 19, 1972 | EF4 | 67 km | 28.2 mi | 5 |
| Apr 27, 1966 | EF4 | 29 km | 10.2 mi | 0 |
| May 4, 1960 | EF4 | 61 km | 8.0 mi | 0 |
| May 9, 1959 | EF4 | 33 km | 6.2 mi | 7 |
| Sep 14, 1957 | EF4 | 72 km | 67.5 mi | 2 |
| Apr 2, 1957 | EF4 | 64 km | 7.9 mi | 3 |
| Apr 2, 1957 | EF4 | 48 km | 5.2 mi | 2 |
| Apr 28, 1950 | EF4 | 85 km | 4.5 mi | 5 |
| Apr 27, 2024 | EF3 | 75 km | 27.9 mi | 2 |
| Apr 27, 2024 | EF3 | 17 km | 9.9 mi | 1 |
| Apr 19, 2023 | EF3 | 96 km | 0.6 mi | 0 |
| Apr 30, 2019 | EF3 | 74 km | 27.6 mi | 2 |
| May 9, 2016 | EF3 | 91 km | 13.8 mi | 0 |
| May 9, 2016 | EF3 | 35 km | 16.6 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: LOCO-HEALDTON (56,584 acres, 2009).
| Year | Name | Acres Burned | Distance |
| 2009 | LOCO-HEALDTON | 56,584 | 57 km |
| 1991 | ARBUCKLE | 29,823 | 30 km |
| 2021 | WINDMILL | 28,410 | 40 km |
| 2009 | RATCLIFF CITY-TATUMS | 23,099 | 60 km |
| 2009 | BRUSHY MOUNTAIN | 18,412 | 59 km |
| 2011 | UNNAMED | 17,973 | 97 km |
| 2005 | UNNAMED | 15,416 | 45 km |
| 2005 | CABINESS | 14,646 | 99 km |
| 2006 | RATLIFF CITY | 12,435 | 59 km |
| 2004 | UNNAMED | 12,163 | 89 km |
| 2005 | UNNAMED | 10,935 | 77 km |
| 2000 | UNNAMED | 9,943 | 32 km |
| 2005 | WEWOKA CREEK | 9,921 | 91 km |
| 2017 | CHOCKIE FIRE | 8,574 | 86 km |
| 2005 | PINE SPRINGS | 7,709 | 96 km |
| 2005 | SHERWOOD | 7,473 | 77 km |
| 1988 | UNNAMED | 7,228 | 25 km |
| 2012 | NOBLE | 7,037 | 93 km |
| 2006 | BIALOCO | 6,843 | 78 km |
| 2005 | MISSION | 6,735 | 90 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 41°F (5°C) | 1.5 in | Coldest, Driest |
| February | 44°F (7°C) | 2.2 in | |
| March | 53°F (11°C) | 3.6 in | |
| April | 61°F (16°C) | 3.7 in | |
| May | 69°F (20°C) | 5.6 in | Wettest |
| June | 77°F (25°C) | 4.3 in | |
| July | 82°F (28°C) | 2.6 in | Warmest |
| August | 81°F (27°C) | 2.6 in | |
| September | 74°F (23°C) | 4.5 in | |
| October | 63°F (17°C) | 4.3 in | |
| November | 51°F (11°C) | 2.8 in | |
| December | 43°F (6°C) | 2.0 in |
Mill Creek has a seasonal temperature swing of 41°F / from 41°F in January to 82°F in July. Total annual precipitation is 39.7 inches, with May being the wettest month (5.6") and January the driest (1.5").