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Weather & Climate in Decaturville, TN
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Decaturville enjoys a temperate climate with an average annual temperature of 59°F (15°C). Winters average 38°F in January while summers reach 79°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 56.9 inches (wetter than the 38-inch national average). Air quality is rated Good with a median AQI of 40. The city sits at an elevation of 487 feet.
Temperature
38°F Jan (3°C)
79°F Jul (26°C)
| Annual Average | 59.0°F |
| 9% above US avg | |
| January Average | 38°F (3°C) |
| July Average | 79°F (26°C) |
| Sunny Days | 301 days/yr |
Geography
| Elevation | 487 ft (148 m) |
| Area | 1.7 sq mi (4.3 km²) |
| Population Density | 542/sq mi |
| Coordinates | 35.5819°N, 88.1195°W |
| Timezone | America/Chicago |
| County | Decatur County County |
| Nearest Airport | Mc Kellar-Sipes Regional (MKL) 45 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 40.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 38.4 / 100 |
| Social Vulnerability | 84.7 / 100 |
| Community Resilience | 41.6 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Very Low |
| Hail | Very Low |
| Strong Wind | Relatively Low |
| Heat Wave | Relatively Low |
| Winter Weather | Very Low |
| Lightning | Relatively Low |
| Ice Storm | Very Low |
| Drought | Very Low |
| Cold Wave | Relatively Moderate |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
107 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.0.
| Jun 2, 2005 | 12 km S of Ridgely, Tennessee | M4.0 | 137 km | 15 km |
| May 16, 2024 | 6 km S of Ridgely, Tennessee | M3.8 | 140 km | 8 km |
| Apr 24, 2019 | 12 km NNW of Dyersburg, Tennessee | M3.7 | 134 km | 14 km |
| Aug 25, 2015 | 9 km W of Henning, Tennessee | M3.5 | 142 km | 13 km |
| Apr 28, 1993 | 8 km SSE of Ridgely, Tennessee | M3.4 | 137 km | 7 km |
| Aug 29, 1990 | 9 km WSW of Central, Tennessee | M3.4 | 140 km | 15 km |
| Nov 6, 2009 | 6 km NNW of Dyersburg, Tennessee | M3.4 | 129 km | 9 km |
| Aug 12, 2013 | 7 km S of Hornbeak, Tennessee | M3.3 | 131 km | 4 km |
| May 31, 2022 | 12 km SE of Ridgely, Tennessee | M3.2 | 132 km | 11 km |
| Apr 7, 2014 | 8 km SE of Ridgely, Tennessee | M3.1 | 136 km | 6 km |
| Nov 6, 1994 | 11 km WSW of Trenton, Tennessee | M3.1 | 94 km | 11 km |
| Aug 23, 1999 | 1 km WSW of Ridgely, Tennessee | M3.1 | 145 km | 9 km |
| Jun 6, 1995 | 5 km SSE of Ridgely, Tennessee | M3.1 | 141 km | 5 km |
| Nov 29, 1996 | 3 km ESE of Ridgely, Tennessee | M3.1 | 141 km | 5 km |
| Jul 31, 2017 | 4 km N of Ridgely, Tennessee | M3.1 | 147 km | 5 km |
| May 27, 1995 | 11 km SSE of Ridgely, Tennessee | M3.0 | 135 km | 6 km |
| Jul 7, 2001 | 7 km E of Ridgely, Tennessee | M3.0 | 139 km | 13 km |
| May 1, 2015 | southeastern Missouri | M2.9 | 136 km | 7 km |
| Jun 25, 2014 | 8 km NNW of Dyersburg, Tennessee | M2.9 | 130 km | 10 km |
| Jun 10, 2016 | 5 km WNW of Ridgely, Tennessee | M2.9 | 150 km | 7 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
405 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF5. Total: 113 fatalities, 1,188 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Apr 16, 1998 | EF5 | 41 km | 69.4 mi | 3 |
| Feb 5, 2008 | EF4 | 38 km | 16.2 mi | 3 |
| Feb 5, 2008 | EF4 | 68 km | 7.6 mi | 0 |
| May 4, 2003 | EF4 | 83 km | 39.0 mi | 11 |
| May 5, 1999 | EF4 | 18 km | 6.0 mi | 3 |
| Jan 17, 1999 | EF4 | 69 km | 16.0 mi | 6 |
| May 18, 1995 | EF4 | 87 km | 29.0 mi | 3 |
| May 7, 1971 | EF4 | 81 km | 50.9 mi | 3 |
| Apr 3, 1956 | EF4 | 32 km | 11.6 mi | 3 |
| Mar 21, 1952 | EF4 | 85 km | 46.8 mi | 38 |
| Mar 31, 2023 | EF3 | 79 km | 86.0 mi | 9 |
| Dec 23, 2015 | EF3 | 52 km | 48.4 mi | 0 |
| Apr 11, 2008 | EF3 | 74 km | 10.3 mi | 0 |
| Apr 11, 2008 | EF3 | 88 km | 4.7 mi | 0 |
| Apr 2, 2006 | EF3 | 98 km | 31.0 mi | 6 |
| May 4, 2003 | EF3 | 74 km | 21.0 mi | 0 |
| Nov 26, 2001 | EF3 | 75 km | 5.0 mi | 2 |
| May 27, 2000 | EF3 | 83 km | 17.2 mi | 0 |
| Jan 22, 1999 | EF3 | 52 km | 15.0 mi | 1 |
| Jan 17, 1999 | EF3 | 98 km | 22.0 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
6 wildfires (100+ acres) recorded within 100 km. Largest: ROCKHOUSE ROAD (791 acres, 2007).
| Year | Name | Acres Burned | Distance |
| 2007 | ROCKHOUSE ROAD | 791 | 34 km |
| 2000 | UNNAMED | 762 | 43 km |
| 2011 | YELLOW CREEK | 572 | 92 km |
| 1999 | UNNAMED | 564 | 47 km |
| 1996 | UNNAMED | 523 | 69 km |
| 2014 | MERIWETHER LEWIS | 513 | 61 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 38°F (3°C) | 4.3 in | Coldest |
| February | 41°F (5°C) | 4.6 in | |
| March | 50°F (10°C) | 5.8 in | Wettest |
| April | 58°F (15°C) | 4.9 in | |
| May | 67°F (19°C) | 5.5 in | |
| June | 74°F (24°C) | 4.1 in | |
| July | 79°F (26°C) | 4.6 in | Warmest |
| August | 77°F (25°C) | 3.4 in | |
| September | 71°F (22°C) | 3.8 in | |
| October | 59°F (15°C) | 3.3 in | Driest |
| November | 49°F (10°C) | 5.1 in | |
| December | 41°F (5°C) | 5.6 in |
Decaturville has a seasonal temperature swing of 41°F / from 38°F in January to 79°F in July. Total annual precipitation is 55.0 inches, with March being the wettest month (5.8") and October the driest (3.3").