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Weather & Climate in Denning, AR
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Denning 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 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 49.3 inches (wetter than the 38-inch national average). The area receives 2.2 inches of snow annually. Air quality is rated Good with a median AQI of 43. The city sits at an elevation of 421 feet.
Temperature
39°F Jan (4°C)
82°F Jul (28°C)
| Annual Average | 60.7°F |
| 12% above US avg | |
| January Average | 39°F (4°C) |
| July Average | 82°F (28°C) |
| Sunny Days | 310 days/yr |
Geography
| Elevation | 421 ft (128 m) |
| Area | 1.1 sq mi (2.8 km²) |
| Population Density | 274/sq mi |
| Coordinates | 35.4252°N, 93.7568°W |
| Timezone | America/Chicago |
| County | Franklin County County |
| Nearest Airport | Fort Smith Regional (FSM) 37 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 43.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 49.4 / 100 |
| Social Vulnerability | 94.8 / 100 |
| Community Resilience | 18.3 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Relatively Low |
| Flood | Relatively Low |
| Hail | Relatively Low |
| Strong Wind | Relatively Low |
| Heat Wave | Relatively Moderate |
| Winter Weather | Relatively Moderate |
| Lightning | Relatively Moderate |
| Ice Storm | Relatively High |
| Drought | Relatively Low |
| Cold Wave | Relatively Low |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
263 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.7.
| Feb 28, 2011 | 4 km NE of Greenbrier, Arkansas | M4.7 | 128 km | 3 km |
| May 4, 2001 | 8 km NNW of Holland, Arkansas | M4.3 | 134 km | 8 km |
| Feb 18, 2011 | 4 km NNE of Greenbrier, Arkansas | M4.1 | 126 km | 6 km |
| Apr 8, 2011 | 3 km NE of Greenbrier, Arkansas | M3.9 | 128 km | 6 km |
| Feb 18, 2011 | 3 km NNE of Greenbrier, Arkansas | M3.9 | 127 km | 5 km |
| Jun 4, 2014 | 3 km ESE of Fairfield Bay, Arkansas | M3.8 | 138 km | 0 km |
| Feb 17, 2011 | 4 km NNE of Greenbrier, Arkansas | M3.8 | 128 km | 6 km |
| Aug 18, 2019 | 1 km ENE of Quinton, Oklahoma | M3.7 | 149 km | 6 km |
| Apr 7, 2011 | 2 km NE of Greenbrier, Arkansas | M3.7 | 127 km | 6 km |
| Sep 12, 2019 | 13 km N of Big Flat, Arkansas | M3.7 | 145 km | 18 km |
| Feb 20, 2011 | 3 km NNE of Greenbrier, Arkansas | M3.6 | 127 km | 5 km |
| Feb 28, 2011 | 4 km NNE of Greenbrier, Arkansas | M3.6 | 127 km | 4 km |
| Jun 11, 2017 | 6 km NNE of Bergman, Arkansas | M3.6 | 126 km | 6 km |
| Feb 16, 2011 | 4 km NNE of Greenbrier, Arkansas | M3.5 | 128 km | 7 km |
| Nov 15, 1990 | 16 km NNW of Hector, Arkansas | M3.5 | 68 km | 29 km |
| Mar 3, 2011 | 0 km N of Greenbrier, Arkansas | M3.5 | 126 km | 7 km |
| Mar 9, 2011 | 1 km NW of Greenbrier, Arkansas | M3.5 | 125 km | 6 km |
| Apr 8, 2011 | 2 km NNE of Greenbrier, Arkansas | M3.5 | 127 km | 6 km |
| Feb 25, 2011 | 4 km NNE of Greenbrier, Arkansas | M3.5 | 127 km | 6 km |
| Mar 16, 1997 | 6 km SSE of Amity, Arkansas | M3.4 | 138 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
416 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF5. Total: 69 fatalities, 1,037 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Mar 26, 1976 | EF5 | 89 km | 11.9 mi | 2 |
| May 24, 2011 | EF4 | 24 km | 45.7 mi | 4 |
| Feb 5, 2008 | EF4 | 72 km | 121.8 mi | 13 |
| Apr 19, 1968 | EF4 | 53 km | 2.0 mi | 14 |
| May 5, 1960 | EF4 | 72 km | 5.4 mi | 5 |
| Jan 22, 1957 | EF4 | 84 km | 0.1 mi | 10 |
| Mar 30, 2022 | EF3 | 85 km | 5.2 mi | 0 |
| May 24, 2011 | EF3 | 21 km | 29.0 mi | 1 |
| Dec 31, 2010 | EF3 | 97 km | 21.1 mi | 4 |
| Apr 30, 2010 | EF3 | 90 km | 20.3 mi | 1 |
| Nov 27, 2005 | EF3 | 100 km | 15.0 mi | 1 |
| Nov 27, 2005 | EF3 | 98 km | 2.0 mi | 0 |
| May 4, 1999 | EF3 | 74 km | 38.2 mi | 0 |
| Apr 21, 1996 | EF3 | 38 km | 15.0 mi | 2 |
| Apr 21, 1996 | EF3 | 63 km | 10.1 mi | 2 |
| Dec 2, 1982 | EF3 | 43 km | 1.0 mi | 0 |
| Apr 7, 1980 | EF3 | 23 km | 3.6 mi | 0 |
| Apr 7, 1980 | EF3 | 79 km | 0.5 mi | 0 |
| Mar 26, 1976 | EF3 | 52 km | 16.1 mi | 0 |
| Jun 6, 1974 | EF3 | 34 km | 11.7 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: UNNAMED (15,318 acres, 2000).
| Year | Name | Acres Burned | Distance |
| 2000 | UNNAMED | 15,318 | 36 km |
| 2007 | UNNAMED | 14,993 | 47 km |
| 2007 | UNNAMED | 14,774 | 34 km |
| 1998 | UNNAMED | 13,929 | 38 km |
| 2016 | UNNAMED | 11,929 | 38 km |
| 2024 | RX FOUCHE VALLEY | 10,912 | 56 km |
| 2007 | UNNAMED | 10,593 | 84 km |
| 2003 | UNNAMED | 9,749 | 80 km |
| 2016 | UNNAMED | 9,483 | 65 km |
| 2013 | UNNAMED | 9,385 | 53 km |
| 2014 | UNNAMED | 9,368 | 46 km |
| 2018 | UNNAMED | 9,226 | 83 km |
| 2010 | W72 BLOOD SPRINGS | 8,674 | 97 km |
| 2013 | UNNAMED | 8,607 | 84 km |
| 2017 | MIDDLE RIDGE | 8,501 | 81 km |
| 2003 | UNNAMED | 8,286 | 82 km |
| 2014 | UNNAMED | 7,945 | 50 km |
| 2016 | UNNAMED | 7,919 | 35 km |
| 2013 | UNNAMED | 7,804 | 35 km |
| 2003 | UNNAMED | 7,415 | 36 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 39°F (4°C) | 2.6 in | Coldest, Driest |
| February | 43°F (6°C) | 2.9 in | |
| March | 52°F (11°C) | 4.3 in | |
| April | 60°F (16°C) | 4.5 in | |
| May | 68°F (20°C) | 5.2 in | Wettest |
| June | 76°F (25°C) | 4.4 in | |
| July | 82°F (28°C) | 3.3 in | Warmest |
| August | 80°F (27°C) | 2.9 in | |
| September | 73°F (23°C) | 4.0 in | |
| October | 61°F (16°C) | 4.1 in | |
| November | 50°F (10°C) | 4.8 in | |
| December | 41°F (5°C) | 3.8 in |
Denning has a seasonal temperature swing of 43°F / from 39°F in January to 82°F in July. Total annual precipitation is 46.7 inches, with May being the wettest month (5.2") and January the driest (2.6").