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Weather & Climate in Sundown, MO
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Sundown enjoys a temperate climate with an average annual temperature of 57°F (14°C). Winters average 34°F in January while summers reach 78°F in July. The area gets 259 sunny days per year, above the national average. Annual precipitation totals 42.5 inches. The area receives 2.1 inches of snow annually. Air quality is rated Good with a median AQI of 41. The city sits at an elevation of 761 feet.
Temperature
34°F Jan (1°C)
78°F Jul (26°C)
| Annual Average | 57.2°F |
| 6% above US avg | |
| January Average | 34°F (1°C) |
| July Average | 78°F (26°C) |
| Sunny Days | 259 days/yr |
Geography
| Elevation | 761 ft (232 m) |
| Area | 1.5 sq mi (3.8 km²) |
| Population Density | 130/sq mi |
| Coordinates | 36.5665°N, 92.6368°W |
| Timezone | America/Chicago |
| Nearest Airport | Marion County Regional (FLP) 19 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 41.0 |
| Rating | Good |
Earthquake History
225 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.7.
| Feb 28, 2011 | 4 km NE of Greenbrier, Arkansas | M4.7 | 147 km | 3 km |
| Feb 18, 2011 | 4 km NNE of Greenbrier, Arkansas | M4.1 | 146 km | 6 km |
| Feb 18, 2011 | 3 km NNE of Greenbrier, Arkansas | M3.9 | 148 km | 5 km |
| Jul 7, 1991 | 11 km ENE of Brandsville, Missouri | M3.9 | 96 km | 8 km |
| Oct 21, 1999 | 9 km NW of Maynard, Arkansas | M3.9 | 149 km | 10 km |
| Apr 8, 2011 | 3 km NE of Greenbrier, Arkansas | M3.9 | 147 km | 6 km |
| Aug 22, 2000 | 19 km WNW of Maynard, Arkansas | M3.9 | 138 km | 10 km |
| Jun 4, 2014 | 3 km ESE of Fairfield Bay, Arkansas | M3.8 | 115 km | 0 km |
| Feb 17, 2011 | 4 km NNE of Greenbrier, Arkansas | M3.8 | 146 km | 6 km |
| Apr 7, 2011 | 2 km NE of Greenbrier, Arkansas | M3.7 | 148 km | 6 km |
| Sep 12, 2019 | 13 km N of Big Flat, Arkansas | M3.7 | 53 km | 18 km |
| Aug 16, 2003 | 5 km W of Thomasville, Missouri | M3.7 | 96 km | 0 km |
| Jun 11, 2017 | 6 km NNE of Bergman, Arkansas | M3.6 | 38 km | 6 km |
| Feb 28, 2011 | 4 km NNE of Greenbrier, Arkansas | M3.6 | 146 km | 4 km |
| Feb 20, 2011 | 3 km NNE of Greenbrier, Arkansas | M3.6 | 147 km | 5 km |
| Feb 25, 2011 | 4 km NNE of Greenbrier, Arkansas | M3.5 | 145 km | 6 km |
| Feb 16, 2011 | 4 km NNE of Greenbrier, Arkansas | M3.5 | 146 km | 7 km |
| Apr 8, 2011 | 2 km NNE of Greenbrier, Arkansas | M3.5 | 147 km | 6 km |
| Nov 15, 1990 | 16 km NNW of Hector, Arkansas | M3.5 | 113 km | 29 km |
| Mar 9, 2011 | 1 km NW of Greenbrier, Arkansas | M3.5 | 149 km | 6 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
431 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 39 fatalities, 605 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Apr 14, 1996 | EF4 | 87 km | 44.0 mi | 7 |
| Nov 29, 1991 | EF4 | 84 km | 10.0 mi | 2 |
| Apr 2, 1982 | EF4 | 37 km | 20.0 mi | 2 |
| Sep 26, 1959 | EF4 | 87 km | 7.8 mi | 0 |
| Mar 25, 1954 | EF4 | 91 km | 12.1 mi | 2 |
| May 26, 2024 | EF3 | 91 km | 12.4 mi | 0 |
| May 26, 2024 | EF3 | 42 km | 34.6 mi | 1 |
| May 26, 2024 | EF3 | 57 km | 21.6 mi | 4 |
| May 8, 2009 | EF3 | 72 km | 2.2 mi | 0 |
| Jan 7, 2008 | EF3 | 92 km | 50.4 mi | 3 |
| Mar 1, 2007 | EF3 | 44 km | 15.0 mi | 1 |
| Mar 12, 2006 | EF3 | 79 km | 32.0 mi | 0 |
| Mar 5, 1996 | EF3 | 85 km | 46.5 mi | 0 |
| Nov 18, 1985 | EF3 | 43 km | 34.0 mi | 3 |
| Apr 2, 1982 | EF3 | 49 km | 1.5 mi | 2 |
| Apr 2, 1982 | EF3 | 43 km | 1.0 mi | 0 |
| Apr 11, 1979 | EF3 | 68 km | 35.4 mi | 0 |
| Apr 20, 1973 | EF3 | 65 km | 7.8 mi | 1 |
| Apr 7, 1972 | EF3 | 92 km | 2.0 mi | 0 |
| Dec 14, 1971 | EF3 | 35 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: DEAD HORSE (10,389 acres, 2007).
| Year | Name | Acres Burned | Distance |
| 2007 | DEAD HORSE | 10,389 | 51 km |
| 2004 | LOWER WILD | 10,034 | 51 km |
| 2018 | UNNAMED | 9,226 | 95 km |
| 2013 | LOWER WILDERNESS RX | 8,699 | 51 km |
| 2003 | UNNAMED | 8,286 | 98 km |
| 2007 | UNNAMED | 6,931 | 23 km |
| 2021 | SYL BIRMINGHAM | 6,803 | 61 km |
| 2011 | UNNAMED | 6,686 | 19 km |
| 2017 | UNNAMED | 6,457 | 98 km |
| 2010 | BRUSHY/CLAYTON | 6,401 | 23 km |
| 2020 | BIG CREEK | 6,399 | 19 km |
| 2001 | UNNAMED | 6,354 | 90 km |
| 2016 | UNNAMED | 5,118 | 98 km |
| 2021 | ROCK PILE | 5,067 | 66 km |
| 2013 | UNNAMED | 4,912 | 98 km |
| 2018 | UNNAMED | 4,873 | 61 km |
| 2019 | UNNAMED | 4,493 | 74 km |
| 2014 | UNNAMED | 4,337 | 72 km |
| 2020 | CAVE CREEK | 4,263 | 73 km |
| 2016 | BIG CREEK | 4,031 | 19 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 34°F (1°C) | 2.1 in | Coldest, Driest |
| February | 39°F (4°C) | 2.6 in | |
| March | 48°F (9°C) | 4.1 in | |
| April | 57°F (14°C) | 4.0 in | |
| May | 65°F (19°C) | 4.7 in | Wettest |
| June | 73°F (23°C) | 4.0 in | |
| July | 78°F (26°C) | 3.0 in | Warmest |
| August | 77°F (25°C) | 3.4 in | |
| September | 70°F (21°C) | 3.9 in | |
| October | 59°F (15°C) | 3.4 in | |
| November | 47°F (9°C) | 4.0 in | |
| December | 38°F (3°C) | 3.5 in |
Sundown has a seasonal temperature swing of 45°F / from 34°F in January to 78°F in July. Total annual precipitation is 42.5 inches, with May being the wettest month (4.7") and January the driest (2.1").