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Weather & Climate in Mount Vernon, TX
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Mount Vernon enjoys a temperate climate with an average annual temperature of 65°F (18°C). Winters average 45°F in January while summers reach 84°F in July. The area gets 308 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 48.2 inches (wetter than the 38-inch national average). The area receives 1.6 inches of snow annually. Air quality is rated Good with a median AQI of 42. The city sits at an elevation of 515 feet.
Temperature
45°F Jan (7°C)
84°F Jul (29°C)
| Annual Average | 64.6°F |
| 20% above US avg | |
| January Average | 45°F (7°C) |
| July Average | 84°F (29°C) |
| Sunny Days | 308 days/yr |
Geography
| Elevation | 515 ft (157 m) |
| Area | 4.3 sq mi (11.2 km²) |
| Population Density | 585/sq mi |
| Coordinates | 33.1774°N, 95.2244°W |
| Timezone | America/Chicago |
| County | Franklin County County |
| Nearest Airport | Mount Pleasant Regional (MPS) 16 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 42.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 24.8 / 100 |
| Social Vulnerability | 69.1 / 100 |
| Community Resilience | 70.9 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| 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 | Relatively Low |
| Lightning | Very 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
12 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.2.
| Sep 2, 2013 | 14 km WNW of Timpson, Texas | M4.2 | 150 km | 5 km |
| Jan 18, 2025 | 0 km WSW of Mooringsport, Louisiana | M3.5 | 129 km | 5 km |
| Oct 20, 2002 | 8 km WSW of Lane, Oklahoma | M3.4 | 145 km | 5 km |
| May 31, 1997 | 3 km ESE of Neylandville, Texas | M3.4 | 69 km | 5 km |
| Apr 16, 2021 | 8 km WNW of Blanchard, Louisiana | M3.2 | 133 km | 5 km |
| Apr 22, 2005 | 17 km N of Swink, Oklahoma | M3.0 | 111 km | 5 km |
| Apr 1, 2021 | 7 km W of Blanchard, Louisiana | M3.0 | 134 km | 5 km |
| Jan 6, 2025 | 4 km ESE of Mooringsport, Louisiana | M3.0 | 135 km | 9 km |
| Dec 11, 2013 | 7 km SSW of Pottsboro, Texas | M2.7 | 150 km | 5 km |
| Dec 13, 2013 | 6 km SSW of Pottsboro, Texas | M2.6 | 148 km | 5 km |
| Nov 10, 2013 | 24 km NNE of Wright City, Oklahoma | M2.5 | 125 km | 4 km |
| Apr 15, 2021 | 10 km SW of Mooringsport, Louisiana | M2.5 | 126 km | 16 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
2 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 2.
| Year | Name | Category | Max Wind | Closest |
| 2020 | Laura | Category 3 | 98 mph | 238 km |
| 2008 | Ike | Category 1 | — | 242 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tornado History
617 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 22 fatalities, 537 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Nov 4, 2022 | EF4 | 36 km | 60.2 mi | 0 |
| Nov 4, 2022 | EF4 | 68 km | 44.7 mi | 0 |
| Apr 2, 1982 | EF4 | 65 km | 23.0 mi | 10 |
| May 13, 1981 | EF4 | 79 km | 8.8 mi | 0 |
| Mar 12, 1971 | EF4 | 77 km | 5.1 mi | 1 |
| Nov 4, 2022 | EF3 | 42 km | 16.9 mi | 1 |
| Nov 4, 2022 | EF3 | 64 km | 15.7 mi | 0 |
| May 10, 2015 | EF3 | 93 km | 10.2 mi | 2 |
| Apr 23, 2000 | EF3 | 80 km | 16.0 mi | 0 |
| May 4, 1999 | EF3 | 5 km | 71.5 mi | 1 |
| Apr 1, 1988 | EF3 | 75 km | 13.0 mi | 0 |
| Nov 15, 1987 | EF3 | 66 km | 12.2 mi | 0 |
| Apr 2, 1982 | EF3 | 54 km | 52.0 mi | 1 |
| May 3, 1979 | EF3 | 52 km | 7.2 mi | 0 |
| Apr 1, 1979 | EF3 | 77 km | 5.6 mi | 0 |
| May 5, 1978 | EF3 | 99 km | 29.9 mi | 0 |
| Nov 1, 1977 | EF3 | 96 km | 5.9 mi | 0 |
| Dec 3, 1973 | EF3 | 60 km | 3.0 mi | 0 |
| Oct 22, 1972 | EF3 | 88 km | 1.5 mi | 0 |
| May 14, 1969 | EF3 | 28 km | 0.5 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
9 wildfires (100+ acres) recorded within 100 km. Largest: NORTHEAST TEXAS FIRE COMPLEX (41,645 acres, 2011).
| Year | Name | Acres Burned | Distance |
| 2011 | NORTHEAST TEXAS FIRE COMPLEX | 41,645 | 80 km |
| 2011 | OLD MAGNOLIA | 4,881 | 81 km |
| 2003 | POPS | 4,475 | 37 km |
| 2006 | WHITE ROCK | 3,228 | 70 km |
| 2011 | DIANA | 2,863 | 66 km |
| 1999 | UNNAMED | 1,699 | 52 km |
| 2006 | UNNAMED | 1,634 | 52 km |
| 2006 | COOPER LAKE | 1,224 | 53 km |
| 2005 | MAPLE CREEK | 1,223 | 38 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 45°F (7°C) | 2.4 in | Coldest |
| February | 47°F (9°C) | 3.4 in | |
| March | 55°F (13°C) | 4.1 in | |
| April | 63°F (17°C) | 4.4 in | |
| May | 70°F (21°C) | 5.0 in | Wettest |
| June | 78°F (26°C) | 3.9 in | |
| July | 84°F (29°C) | 3.2 in | Warmest |
| August | 82°F (28°C) | 2.2 in | Driest |
| September | 76°F (24°C) | 3.8 in | |
| October | 65°F (18°C) | 4.2 in | |
| November | 53°F (12°C) | 4.1 in | |
| December | 46°F (8°C) | 3.8 in |
Mount Vernon has a seasonal temperature swing of 39°F / from 45°F in January to 84°F in July. Total annual precipitation is 44.3 inches, with May being the wettest month (5.0") and August the driest (2.2").