Weather & Climate in South Fork, MO
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
South Fork enjoys a temperate climate with an average annual temperature of 56°F (13°C). Winters average 33°F in January while summers reach 77°F in July. Annual precipitation totals 49.4 inches (wetter than the 38-inch national average). The area receives 8.7 inches of snow annually. The city sits at an elevation of 1,099 feet.
Temperature
33°F Jan (1°C)
77°F Jul (25°C)
| Annual Average | 55.6°F |
| 3% above US avg | |
| January Average | 33°F (1°C) |
| July Average | 77°F (25°C) |
Geography
| Elevation | 1,099 ft (335 m) |
| Area | 3.5 sq mi (9.1 km²) |
| Population Density | 19/sq mi |
| Coordinates | 36.6278°N, 91.9627°W |
| Timezone | America/Chicago |
| Nearest Airport | Sharp County Regional (CKK) 34 miles away |
Precipitation & Snow
Air Quality
Earthquake History
110 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.9.
| Jul 7, 1991 | 11 km ENE of Brandsville, Missouri | M3.9 | 36 km | 8 km |
| Aug 22, 2000 | 19 km WNW of Maynard, Arkansas | M3.9 | 79 km | 10 km |
| Oct 21, 1999 | 9 km NW of Maynard, Arkansas | M3.9 | 90 km | 10 km |
| Jun 4, 2014 | 3 km ESE of Fairfield Bay, Arkansas | M3.8 | 119 km | 0 km |
| Aug 16, 2003 | 5 km W of Thomasville, Missouri | M3.7 | 37 km | 0 km |
| Sep 12, 2019 | 13 km N of Big Flat, Arkansas | M3.7 | 68 km | 18 km |
| Sep 22, 2011 | 6 km E of Grandin, Missouri | M3.6 | 110 km | 11 km |
| Jun 11, 2017 | 6 km NNE of Bergman, Arkansas | M3.6 | 96 km | 6 km |
| Nov 15, 1990 | 16 km NNW of Hector, Arkansas | M3.5 | 150 km | 29 km |
| Aug 20, 1994 | 4 km NE of Black Rock, Arkansas | M3.5 | 97 km | 10 km |
| Jun 27, 2000 | 15 km WSW of Marshall, Arkansas | M3.4 | 114 km | 0 km |
| Jan 20, 2010 | 4 km WNW of Lynn, Arkansas | M3.3 | 90 km | 0 km |
| Oct 5, 2011 | 5 km WSW of Quitman, Arkansas | M3.3 | 143 km | 5 km |
| Feb 24, 2011 | 2 km NE of Guy, Arkansas | M3.2 | 147 km | 5 km |
| Aug 21, 2022 | 4 km SSW of Imboden, Arkansas | M3.1 | 85 km | 16 km |
| Oct 21, 1999 | 10 km NW of Maynard, Arkansas | M3.1 | 89 km | 9 km |
| Mar 18, 1990 | 9 km W of Alton, Missouri | M3.0 | 41 km | 1 km |
| Oct 10, 2010 | 0 km SSE of Guy, Arkansas | M3.0 | 149 km | 5 km |
| Jun 27, 2025 | 12 km WSW of Grandin, Missouri | M2.9 | 92 km | 10 km |
| May 21, 2013 | Arkansas | M2.9 | 96 km | 15 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Tornado History
339 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 43 fatalities, 674 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Apr 24, 2002 | EF4 | 94 km | 40.5 mi | 0 |
| Apr 14, 1996 | EF4 | 96 km | 44.0 mi | 7 |
| Dec 24, 1982 | EF4 | 59 km | 63.0 mi | 0 |
| Apr 2, 1982 | EF4 | 24 km | 20.0 mi | 2 |
| May 21, 1957 | EF4 | 79 km | 9.1 mi | 7 |
| Mar 25, 1954 | EF4 | 81 km | 12.1 mi | 2 |
| May 26, 2024 | EF3 | 46 km | 12.4 mi | 0 |
| May 26, 2024 | EF3 | 81 km | 34.6 mi | 1 |
| May 8, 2009 | EF3 | 28 km | 2.2 mi | 0 |
| Mar 1, 2007 | EF3 | 17 km | 15.0 mi | 1 |
| Apr 2, 2006 | EF3 | 100 km | 77.0 mi | 2 |
| Mar 5, 1996 | EF3 | 70 km | 46.5 mi | 0 |
| Nov 18, 1985 | EF3 | 81 km | 34.0 mi | 3 |
| Oct 18, 1984 | EF3 | 43 km | 26.0 mi | 1 |
| Dec 2, 1982 | EF3 | 59 km | 9.0 mi | 0 |
| Apr 2, 1982 | EF3 | 26 km | 1.5 mi | 2 |
| Apr 2, 1982 | EF3 | 99 km | 1.0 mi | 0 |
| Apr 11, 1979 | EF3 | 46 km | 35.4 mi | 0 |
| Apr 7, 1972 | EF3 | 100 km | 2.0 mi | 0 |
| Dec 14, 1971 | EF3 | 71 km | 23.6 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950-2024, US only).
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: HANDY (12,818 acres, 2012).
| Year | Name | Acres Burned | Distance |
| 2012 | HANDY | 12,818 | 77 km |
| 2007 | DEAD HORSE | 10,389 | 72 km |
| 2004 | LOWER WILD | 10,034 | 72 km |
| 2011 | UNNAMED | 9,641 | 81 km |
| 2022 | CEDAR BLUFF | 9,617 | 77 km |
| 2013 | LOWER WILDERNESS RX | 8,699 | 72 km |
| 2020 | BIG BARREN CREEK | 8,150 | 78 km |
| 2022 | STEGALL MOUNTAIN | 6,979 | 85 km |
| 2007 | UNNAMED | 6,931 | 77 km |
| 2021 | SYL BIRMINGHAM | 6,803 | 69 km |
| 2011 | UNNAMED | 6,686 | 76 km |
| 2010 | BRUSHY/CLAYTON | 6,401 | 77 km |
| 2020 | BIG CREEK | 6,399 | 76 km |
| 2015 | 15 STEGAL MOUNTAIN | 5,112 | 85 km |
| 2021 | ROCK PILE | 5,067 | 33 km |
| 2018 | UNNAMED | 4,873 | 70 km |
| 2024 | BRIDGES RX | 4,781 | 84 km |
| 2009 | STEGAL MTN. COMPLEX | 4,717 | 85 km |
| 2019 | UNNAMED | 4,493 | 69 km |
| 2014 | UNNAMED | 4,337 | 69 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 33°F (1°C) | 3.3 in | Coldest |
| February | 38°F (3°C) | 3.0 in | Driest |
| March | 46°F (8°C) | 4.8 in | |
| April | 56°F (13°C) | 5.7 in | Wettest |
| May | 64°F (18°C) | 5.6 in | |
| June | 73°F (23°C) | 3.5 in | |
| July | 77°F (25°C) | 3.7 in | Warmest |
| August | 76°F (24°C) | 4.1 in | |
| September | 68°F (20°C) | 4.0 in | |
| October | 56°F (14°C) | 3.8 in | |
| November | 45°F (7°C) | 4.5 in | |
| December | 36°F (2°C) | 3.5 in |
South Fork has a seasonal temperature swing of 44°F / from 33°F in January to 77°F in July. Total annual precipitation is 49.4 inches, with April being the wettest month (5.7") and February the driest (3.0").