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Weather & Climate in Mount Vernon, AR
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Mount Vernon enjoys a temperate climate with an average annual temperature of 60°F (15°C). Winters average 39°F in January while summers reach 80°F in July. The area gets 301 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 50.5 inches (wetter than the 38-inch national average). Air quality is rated Good with a median AQI of 43. The city sits at an elevation of 423 feet.
Temperature
39°F Jan (4°C)
80°F Jul (27°C)
| Annual Average | 59.8°F |
| 11% above US avg | |
| January Average | 39°F (4°C) |
| July Average | 80°F (27°C) |
| Sunny Days | 301 days/yr |
Geography
| Elevation | 423 ft (129 m) |
| Area | 1.0 sq mi (2.6 km²) |
| Population Density | 183/sq mi |
| Coordinates | 35.2236°N, 92.1240°W |
| Timezone | America/Chicago |
| County | Faulkner County County |
| Nearest Airport | Searcy Regional (SRC) 24 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 43.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 86.2 / 100 |
| Social Vulnerability | 15.0 / 100 |
| Community Resilience | 57.2 / 100 |
Hazard Breakdown
| Tornado | Relatively High |
| Hurricane | Very Low |
| Earthquake | Relatively Moderate |
| Wildfire | Relatively Low |
| Flood | Relatively Moderate |
| Hail | Relatively Low |
| Strong Wind | Relatively High |
| Heat Wave | Relatively Moderate |
| Winter Weather | Relatively Moderate |
| Lightning | Relatively Moderate |
| Ice Storm | Very High |
| Drought | Relatively Low |
| Cold Wave | Relatively Low |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
257 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 | 22 km | 3 km |
| May 4, 2001 | 8 km NNW of Holland, Arkansas | M4.3 | 16 km | 8 km |
| Feb 18, 2011 | 4 km NNE of Greenbrier, Arkansas | M4.1 | 24 km | 6 km |
| Apr 8, 2011 | 3 km NE of Greenbrier, Arkansas | M3.9 | 22 km | 6 km |
| Oct 29, 2012 | 8 km SW of Parkin, Arkansas | M3.9 | 136 km | 21 km |
| Feb 18, 2011 | 3 km NNE of Greenbrier, Arkansas | M3.9 | 23 km | 5 km |
| Feb 17, 2011 | 4 km NNE of Greenbrier, Arkansas | M3.8 | 22 km | 6 km |
| Jun 4, 2014 | 3 km ESE of Fairfield Bay, Arkansas | M3.8 | 41 km | 0 km |
| Apr 7, 2011 | 2 km NE of Greenbrier, Arkansas | M3.7 | 23 km | 6 km |
| Feb 23, 2013 | 7 km SW of Trumann, Arkansas | M3.7 | 149 km | 14 km |
| Sep 12, 2019 | 13 km N of Big Flat, Arkansas | M3.7 | 104 km | 18 km |
| Jun 11, 2017 | 6 km NNE of Bergman, Arkansas | M3.6 | 150 km | 6 km |
| Feb 20, 2011 | 3 km NNE of Greenbrier, Arkansas | M3.6 | 23 km | 5 km |
| Feb 28, 2011 | 4 km NNE of Greenbrier, Arkansas | M3.6 | 23 km | 4 km |
| Aug 20, 1994 | 4 km NE of Black Rock, Arkansas | M3.5 | 140 km | 10 km |
| Mar 3, 2011 | 0 km N of Greenbrier, Arkansas | M3.5 | 24 km | 7 km |
| Apr 8, 2011 | 2 km NNE of Greenbrier, Arkansas | M3.5 | 23 km | 6 km |
| Nov 15, 1990 | 16 km NNW of Hector, Arkansas | M3.5 | 93 km | 29 km |
| Feb 25, 2011 | 4 km NNE of Greenbrier, Arkansas | M3.5 | 24 km | 6 km |
| Feb 16, 2011 | 4 km NNE of Greenbrier, Arkansas | M3.5 | 22 km | 7 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
631 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 232 fatalities, 2,749 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Apr 27, 2014 | EF4 | 69 km | 41.1 mi | 16 |
| Feb 5, 2008 | EF4 | 87 km | 121.8 mi | 13 |
| Mar 1, 1997 | EF4 | 70 km | 11.0 mi | 5 |
| Mar 1, 1997 | EF4 | 86 km | 14.0 mi | 10 |
| Apr 14, 1996 | EF4 | 69 km | 44.0 mi | 7 |
| Mar 15, 1984 | EF4 | 49 km | 41.0 mi | 2 |
| Mar 15, 1984 | EF4 | 86 km | 26.0 mi | 5 |
| May 26, 1973 | EF4 | 69 km | 54.8 mi | 3 |
| May 15, 1968 | EF4 | 76 km | 0.3 mi | 7 |
| Apr 10, 1965 | EF4 | 35 km | 4.7 mi | 6 |
| Mar 21, 1952 | EF4 | 83 km | 13.1 mi | 29 |
| Mar 21, 1952 | EF4 | 44 km | 7.6 mi | 2 |
| Mar 21, 1952 | EF4 | 39 km | 14.6 mi | 50 |
| Mar 31, 2023 | EF3 | 64 km | 34.2 mi | 0 |
| Apr 30, 2010 | EF3 | 81 km | 7.7 mi | 0 |
| Apr 30, 2010 | EF3 | 62 km | 20.3 mi | 1 |
| May 10, 2008 | EF3 | 95 km | 14.1 mi | 0 |
| May 2, 2008 | EF3 | 44 km | 45.3 mi | 5 |
| Apr 2, 2006 | EF3 | 98 km | 38.0 mi | 0 |
| Nov 27, 2005 | EF3 | 86 km | 19.0 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: UNNAMED (9,226 acres, 2018).
| Year | Name | Acres Burned | Distance |
| 2018 | UNNAMED | 9,226 | 93 km |
| 2013 | UNNAMED | 8,607 | 92 km |
| 2003 | UNNAMED | 8,286 | 91 km |
| 2021 | SYL BIRMINGHAM | 6,803 | 97 km |
| 2017 | UNNAMED | 6,457 | 88 km |
| 2006 | UNNAMED | 5,604 | 89 km |
| 2006 | SULPHUR CREEK 2 | 5,469 | 98 km |
| 2006 | FLATSIDE | 5,256 | 94 km |
| 2016 | UNNAMED | 5,118 | 91 km |
| 2013 | UNNAMED | 4,912 | 91 km |
| 2018 | UNNAMED | 4,873 | 97 km |
| 2006 | UNNAMED | 4,553 | 79 km |
| 2019 | UNNAMED | 4,493 | 89 km |
| 2013 | UNNAMED | 4,461 | 96 km |
| 2003 | UNNAMED | 4,436 | 96 km |
| 2014 | UNNAMED | 4,337 | 90 km |
| 2024 | RX PAYNE RIDGE | 4,216 | 95 km |
| 2007 | UNNAMED | 4,000 | 70 km |
| 2003 | UNNAMED | 3,997 | 100 km |
| 2014 | UNNAMED | 3,968 | 99 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 39°F (4°C) | 3.2 in | Coldest, Driest |
| February | 43°F (6°C) | 3.6 in | |
| March | 51°F (11°C) | 5.3 in | |
| April | 60°F (16°C) | 5.0 in | |
| May | 68°F (20°C) | 5.4 in | Wettest |
| June | 76°F (24°C) | 3.9 in | |
| July | 80°F (27°C) | 3.5 in | Warmest |
| August | 79°F (26°C) | 3.5 in | |
| September | 72°F (22°C) | 4.3 in | |
| October | 61°F (16°C) | 4.0 in | |
| November | 50°F (10°C) | 5.2 in | |
| December | 41°F (5°C) | 4.8 in |
Mount Vernon has a seasonal temperature swing of 41°F / from 39°F in January to 80°F in July. Total annual precipitation is 51.6 inches, with May being the wettest month (5.4") and January the driest (3.2").