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Weather & Climate in Marietta, MS
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Marietta enjoys a temperate climate with an average annual temperature of 61°F (16°C). Winters average 40°F in January while summers reach 79°F in July. The area gets 302 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 61.5 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 43. The city sits at an elevation of 344 feet.
Temperature
40°F Jan (5°C)
79°F Jul (26°C)
| Annual Average | 60.6°F |
| 12% above US avg | |
| January Average | 40°F (5°C) |
| July Average | 79°F (26°C) |
| Sunny Days | 302 days/yr |
Geography
| Elevation | 344 ft (105 m) |
| Area | 1.8 sq mi (4.6 km²) |
| Population Density | 89/sq mi |
| Coordinates | 34.5000°N, 88.4726°W |
| Timezone | America/Chicago |
| County | Prentiss County County |
| Nearest Airport | Tupelo Regional (TUP) 23 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 43.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 51.5 / 100 |
| Social Vulnerability | 81.5 / 100 |
| Community Resilience | 32.3 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Relatively Low |
| Hail | Very Low |
| Strong Wind | Relatively Low |
| Heat Wave | Relatively Low |
| Winter Weather | Very Low |
| Lightning | Relatively Moderate |
| Ice Storm | Relatively Low |
| Drought | Relatively Low |
| Cold Wave | Relatively Moderate |
| Landslide | Relatively Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
34 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.3.
| Jul 15, 1995 | 21 km SSW of Berry, Alabama | M3.3 | 136 km | 1 km |
| Jun 23, 1990 | 12 km E of Vernon, Alabama | M3.2 | 94 km | 1 km |
| Sep 2, 1990 | 12 km NW of Fayette, Alabama | M3.2 | 97 km | 1 km |
| May 10, 2008 | 1 km SSE of Sherman, Mississippi | M3.1 | 37 km | 0 km |
| Jun 23, 1990 | 8 km N of Belk, Alabama | M3.1 | 99 km | 6 km |
| May 4, 1994 | 2 km NNW of Addison, Alabama | M3.0 | 121 km | 19 km |
| May 28, 2000 | 13 km S of Winfield, Alabama | M3.0 | 97 km | 5 km |
| May 28, 2000 | 3 km NE of Fayette, Alabama | M3.0 | 107 km | 0 km |
| May 4, 1994 | 12 km NNW of Addison, Alabama | M3.0 | 115 km | 5 km |
| May 4, 2007 | 4 km SSW of Jasper, Alabama | M3.0 | 133 km | 5 km |
| Jan 2, 2000 | 4 km SW of Lester, Alabama | M2.9 | 129 km | 10 km |
| Jan 5, 2012 | 11 km NW of Oakman, Alabama | M2.9 | 121 km | 8 km |
| Jan 2, 2000 | 4 km SW of Lester, Alabama | M2.9 | 129 km | 13 km |
| Jun 25, 2020 | 4 km NNW of Berry, Alabama | M2.9 | 119 km | 1 km |
| May 13, 1999 | 7 km NW of Elkmont, Alabama | M2.8 | 142 km | 10 km |
| Oct 3, 1993 | 3 km SW of Oakman, Alabama | M2.8 | 133 km | 10 km |
| Sep 20, 1990 | 6 km N of Elkmont, Alabama | M2.8 | 148 km | 4 km |
| May 13, 1999 | 11 km S of Pulaski, Tennessee | M2.8 | 147 km | 20 km |
| Feb 25, 1999 | 10 km NE of Oakland, Mississippi | M2.8 | 133 km | 5 km |
| Mar 11, 2006 | 17 km E of Olivet, Tennessee | M2.7 | 88 km | 2 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
509 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF5. Total: 245 fatalities, 1,926 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Apr 27, 2011 | EF5 | 53 km | 132.0 mi | 72 |
| Apr 27, 2011 | EF5 | 51 km | 37.1 mi | 23 |
| Apr 16, 1998 | EF5 | 90 km | 69.4 mi | 3 |
| Apr 3, 1974 | EF5 | 81 km | 79.5 mi | 28 |
| Apr 3, 1974 | EF5 | 91 km | 52.0 mi | 28 |
| Feb 5, 2008 | EF4 | 87 km | 16.2 mi | 3 |
| Apr 19, 1970 | EF4 | 54 km | 47.6 mi | 4 |
| Apr 29, 1963 | EF4 | 48 km | 4.7 mi | 3 |
| Mar 21, 1952 | EF4 | 97 km | 46.8 mi | 38 |
| Mar 31, 2023 | EF3 | 79 km | 86.0 mi | 9 |
| Mar 24, 2023 | EF3 | 77 km | 36.6 mi | 2 |
| Dec 23, 2015 | EF3 | 85 km | 48.4 mi | 0 |
| Apr 28, 2014 | EF3 | 44 km | 31.0 mi | 0 |
| Apr 27, 2011 | EF3 | 98 km | 8.0 mi | 0 |
| Apr 27, 2011 | EF3 | 72 km | 31.8 mi | 0 |
| May 2, 2010 | EF3 | 74 km | 29.6 mi | 3 |
| May 8, 2008 | EF3 | 40 km | 7.6 mi | 0 |
| Feb 5, 2008 | EF3 | 98 km | 7.2 mi | 0 |
| Jan 10, 2008 | EF3 | 94 km | 13.3 mi | 0 |
| Feb 24, 2001 | EF3 | 96 km | 52.0 mi | 6 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: COMP 109 (3,663 acres, 2010).
| Year | Name | Acres Burned | Distance |
| 2010 | COMP 109 | 3,663 | 84 km |
| 2014 | C-55 CHILLI LAKE | 3,555 | 65 km |
| 2017 | UNNAMED | 3,152 | 82 km |
| 2014 | C-39 EAST CHEWALLA | 3,107 | 82 km |
| 2017 | UNNAMED | 3,031 | 64 km |
| 2022 | HOLLY SPRINGS BB 119/90/88 | 2,955 | 85 km |
| 2013 | UNNAMED | 2,848 | 81 km |
| 2006 | WITCHDCE W | 2,846 | 76 km |
| 2014 | C-84 BAGLEY BOTTOMS | 2,766 | 86 km |
| 2016 | UNNAMED | 2,645 | 83 km |
| 2013 | MIDWAY CEM PRESCRIBED BURN | 2,513 | 83 km |
| 2015 | BIG TREE | 2,288 | 99 km |
| 2007 | WITCHDANCE EAST | 2,285 | 75 km |
| 2013 | PUSKUS LAKE | 2,271 | 81 km |
| 2017 | UNNAMED | 2,248 | 75 km |
| 2010 | BALLS MT. | 2,229 | 95 km |
| 2021 | TOMBIGBEE CPT - 18/19/23/24 | 2,201 | 76 km |
| 2022 | HOLLY SPRINGS BB 51/52/53 | 2,182 | 63 km |
| 2014 | UNNAMED | 2,143 | 95 km |
| 2010 | COMP 42 | 2,142 | 80 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 40°F (5°C) | 5.1 in | Coldest |
| February | 44°F (7°C) | 4.8 in | |
| March | 53°F (12°C) | 6.3 in | Wettest |
| April | 61°F (16°C) | 5.4 in | |
| May | 69°F (20°C) | 5.9 in | |
| June | 76°F (24°C) | 4.0 in | |
| July | 79°F (26°C) | 4.3 in | Warmest |
| August | 79°F (26°C) | 3.4 in | Driest |
| September | 73°F (23°C) | 3.9 in | |
| October | 61°F (16°C) | 3.5 in | |
| November | 51°F (11°C) | 5.1 in | |
| December | 44°F (6°C) | 6.2 in |
Marietta has a seasonal temperature swing of 39°F / from 40°F in January to 79°F in July. Total annual precipitation is 57.9 inches, with March being the wettest month (6.3") and August the driest (3.4").