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Weather & Climate in Loudon, TN
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Loudon 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 55.2 inches (wetter than the 38-inch national average). The area receives 4.0 inches of snow annually. Air quality is rated Good with a median AQI of 42. 78% of days have good air quality. The city sits at an elevation of 899 feet.
Temperature
38°F Jan (4°C)
79°F Jul (26°C)
| Annual Average | 59.1°F |
| 9% above US avg | |
| January Average | 38°F (4°C) |
| July Average | 79°F (26°C) |
| Sunny Days | 301 days/yr |
Geography
| Elevation | 899 ft (274 m) |
| Area | 12.9 sq mi (33.4 km²) |
| Population Density | 493/sq mi |
| Coordinates | 35.7372°N, 84.3621°W |
| Timezone | America/Chicago |
| County | Loudon County County |
| Nearest Airport | Mc Ghee Tyson (TYS) 21 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 42.0 |
| Rating | Good |
| Good Days % | 78.1% |
| Unhealthy Days | 0 |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 68.4 / 100 |
| Social Vulnerability | 68.1 / 100 |
| Community Resilience | 68.0 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Relatively Low |
| Hail | Very Low |
| Strong Wind | Relatively Moderate |
| Heat Wave | Very Low |
| Winter Weather | Relatively Moderate |
| Lightning | Relatively Moderate |
| Ice Storm | Relatively Moderate |
| Drought | Relatively Moderate |
| Cold Wave | Relatively Moderate |
| Landslide | Relatively Moderate |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
187 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.1.
| May 10, 2025 | 21 km SE of Greenback, Tennessee | M4.1 | 40 km | 25 km |
| Jul 30, 1997 | 6 km NNE of Tazewell, Tennessee | M3.8 | 113 km | 23 km |
| Jan 20, 2020 | 2 km NE of Fincastle, Tennessee | M3.8 | 83 km | 35 km |
| Jul 5, 1995 | 12 km ESE of Tellico Plains, Tennessee | M3.7 | 48 km | 10 km |
| Sep 17, 2004 | 8 km ESE of Corbin, Kentucky | M3.7 | 137 km | 1 km |
| Jun 17, 1998 | 9 km SSE of Coalfield, Tennessee | M3.6 | 23 km | 11 km |
| Jun 19, 2007 | 10 km ENE of Spencer, Tennessee | M3.5 | 90 km | 1 km |
| Jul 19, 1997 | 12 km E of Cohutta, Georgia | M3.5 | 96 km | 3 km |
| Jun 16, 2006 | 9 km W of Maggie Valley, North Carolina | M3.4 | 108 km | 1 km |
| Mar 5, 2019 | 7 km NE of Maynardville, Tennessee | M3.4 | 84 km | 17 km |
| Aug 31, 2009 | 2 km NNE of Friendsville, Tennessee | M3.3 | 22 km | 14 km |
| Apr 11, 2006 | 5 km NE of Etowah, Tennessee | M3.3 | 43 km | 20 km |
| Mar 18, 1995 | 10 km SE of Dayton, Tennessee | M3.3 | 63 km | 26 km |
| Apr 20, 2010 | 4 km SW of Maryville, Tennessee | M3.3 | 33 km | 2 km |
| Jun 4, 2023 | 4 km NNW of West Canton, North Carolina | M3.2 | 136 km | 0 km |
| Mar 21, 2001 | 7 km ESE of Trenton, Georgia | M3.2 | 139 km | 0 km |
| Mar 7, 2001 | 6 km NW of Decatur, Tennessee | M3.2 | 49 km | 7 km |
| Mar 7, 2001 | 5 km WNW of Decatur, Tennessee | M3.2 | 49 km | 18 km |
| Jan 27, 2009 | 4 km NE of Williamsburg, Kentucky | M3.2 | 117 km | 26 km |
| Aug 1, 2009 | 8 km ENE of Ducktown, Tennessee | M3.2 | 75 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
242 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 48 fatalities, 878 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Apr 27, 2011 | EF4 | 36 km | 14.5 mi | 0 |
| Apr 3, 1974 | EF4 | 86 km | 18.8 mi | 7 |
| Apr 3, 1974 | EF4 | 88 km | 24.0 mi | 4 |
| May 2, 1953 | EF4 | 45 km | 4.2 mi | 4 |
| Nov 30, 2016 | EF3 | 77 km | 4.6 mi | 2 |
| Jul 27, 2014 | EF3 | 89 km | 4.7 mi | 0 |
| Mar 2, 2012 | EF3 | 99 km | 41.0 mi | 0 |
| Mar 23, 2011 | EF3 | 15 km | 5.8 mi | 0 |
| Nov 10, 2002 | EF3 | 69 km | 12.2 mi | 4 |
| Nov 10, 2002 | EF3 | 39 km | 8.3 mi | 7 |
| Mar 29, 1997 | EF3 | 82 km | 4.0 mi | 0 |
| May 18, 1995 | EF3 | 76 km | 9.0 mi | 0 |
| Apr 15, 1994 | EF3 | 74 km | 15.0 mi | 1 |
| Feb 21, 1993 | EF3 | 36 km | 19.0 mi | 0 |
| Feb 21, 1993 | EF3 | 33 km | 16.0 mi | 0 |
| Feb 21, 1993 | EF3 | 12 km | 30.0 mi | 1 |
| Feb 6, 1986 | EF3 | 70 km | 10.0 mi | 0 |
| Apr 8, 1974 | EF3 | 41 km | 2.0 mi | 0 |
| Apr 3, 1974 | EF3 | 77 km | 21.2 mi | 3 |
| Apr 3, 1974 | EF3 | 63 km | 12.2 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: ROUGH RIDGE (27,610 acres, 2016).
| Year | Name | Acres Burned | Distance |
| 2016 | ROUGH RIDGE | 27,610 | 94 km |
| 2016 | CHIMNEY TOPS 2 | 14,998 | 78 km |
| 2016 | TELLICO | 14,172 | 85 km |
| 1987 | UNNAMED | 11,663 | 54 km |
| 2016 | STINKING CREEK | 10,768 | 81 km |
| 1987 | UNNAMED | 10,327 | 90 km |
| 2016 | BOTELER | 8,626 | 97 km |
| 2024 | RX - T26 BRUSHY RIDGE | 8,324 | 49 km |
| 2000 | UNNAMED | 8,064 | 61 km |
| 2016 | MAPLE SPRINGS | 7,696 | 55 km |
| 1987 | K-T FIRE | 6,372 | 95 km |
| 2001 | SHARP | 6,039 | 86 km |
| 1987 | UNNAMED | 5,973 | 76 km |
| 2000 | UNNAMED | 5,371 | 49 km |
| 2024 | RX - T10 MILLER RIDGE | 5,154 | 40 km |
| 2003 | UNNAMED | 4,675 | 41 km |
| 2001 | UNNAMED | 4,635 | 99 km |
| 2024 | RX - O63 CHESTNUT MTN | 4,570 | 83 km |
| 1987 | UNNAMED | 4,337 | 95 km |
| 2013 | BEAVER DAM | 4,336 | 57 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 38°F (4°C) | 4.7 in | Coldest |
| February | 41°F (5°C) | 4.3 in | |
| March | 49°F (9°C) | 5.6 in | Wettest |
| April | 57°F (14°C) | 4.1 in | |
| May | 65°F (18°C) | 4.7 in | |
| June | 73°F (23°C) | 3.9 in | |
| July | 79°F (26°C) | 5.1 in | Warmest |
| August | 76°F (24°C) | 3.8 in | |
| September | 70°F (21°C) | 3.7 in | |
| October | 58°F (15°C) | 3.2 in | Driest |
| November | 49°F (9°C) | 4.4 in | |
| December | 40°F (5°C) | 5.0 in |
Loudon has a seasonal temperature swing of 40°F / from 38°F in January to 79°F in July. Total annual precipitation is 52.6 inches, with March being the wettest month (5.6") and October the driest (3.2").