Weather & Climate in Summersville, MO
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Summersville enjoys a temperate climate with an average annual temperature of 56°F (13°C). Winters average 33°F in January while summers reach 78°F in July. Annual precipitation totals 50.6 inches (wetter than the 38-inch national average). The area receives 5.6 inches of snow annually. The city sits at an elevation of 1,234 feet.
Temperature
33°F Jan (1°C)
78°F Jul (25°C)
| Annual Average | 56.0°F |
| 4% above US avg | |
| January Average | 33°F (1°C) |
| July Average | 78°F (25°C) |
Geography
| Elevation | 1,234 ft (376 m) |
| Area | 1.1 sq mi (2.9 km²) |
| Population Density | 385/sq mi |
| Coordinates | 37.1792°N, 91.6568°W |
| Timezone | America/Chicago |
| Nearest Airport | Waynesville-St Robert Regional Forney Field (TBN) 47 miles away |
Precipitation & Snow
Air Quality
Earthquake History
77 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 | 56 km | 8 km |
| Oct 21, 1999 | 9 km NW of Maynard, Arkansas | M3.9 | 99 km | 10 km |
| Aug 22, 2000 | 19 km WNW of Maynard, Arkansas | M3.9 | 93 km | 10 km |
| Jun 7, 2011 | 18 km NNW of Potosi, Missouri | M3.9 | 120 km | 21 km |
| Aug 16, 2003 | 5 km W of Thomasville, Missouri | M3.7 | 43 km | 0 km |
| Sep 12, 2019 | 13 km N of Big Flat, Arkansas | M3.7 | 135 km | 18 km |
| Jun 11, 2017 | 6 km NNE of Bergman, Arkansas | M3.6 | 149 km | 6 km |
| Sep 22, 2011 | 6 km E of Grandin, Missouri | M3.6 | 90 km | 11 km |
| Aug 20, 1994 | 4 km NE of Black Rock, Arkansas | M3.5 | 127 km | 10 km |
| Aug 27, 1993 | 5 km SSE of Olympian Village, Missouri | M3.3 | 148 km | 22 km |
| Jan 20, 2010 | 4 km WNW of Lynn, Arkansas | M3.3 | 133 km | 0 km |
| Aug 21, 2022 | 4 km SSW of Imboden, Arkansas | M3.1 | 120 km | 16 km |
| Jan 21, 1992 | 5 km SE of Linn Creek, Missouri | M3.1 | 128 km | 5 km |
| Oct 21, 1999 | 10 km NW of Maynard, Arkansas | M3.1 | 98 km | 9 km |
| Mar 18, 1990 | 9 km W of Alton, Missouri | M3.0 | 56 km | 1 km |
| Jun 27, 2025 | 12 km WSW of Grandin, Missouri | M2.9 | 78 km | 10 km |
| May 21, 2013 | Arkansas | M2.9 | 141 km | 15 km |
| Jul 8, 2003 | 1 km N of Leasburg, Missouri | M2.9 | 108 km | 4 km |
| Jan 26, 2009 | 1 km NNE of Walnut Ridge, Arkansas | M2.9 | 138 km | 4 km |
| Feb 9, 2004 | 1 km SW of Reyno, Arkansas | M2.9 | 121 km | 13 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Tornado History
353 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 39 fatalities, 439 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Apr 24, 2002 | EF4 | 60 km | 40.5 mi | 0 |
| Apr 2, 1982 | EF4 | 84 km | 20.0 mi | 2 |
| Jun 22, 1969 | EF4 | 99 km | 20.2 mi | 2 |
| Dec 21, 1967 | EF4 | 73 km | 27.9 mi | 3 |
| Sep 26, 1959 | EF4 | 92 km | 7.8 mi | 0 |
| May 21, 1957 | EF4 | 50 km | 9.1 mi | 7 |
| Mar 25, 1954 | EF4 | 53 km | 12.1 mi | 2 |
| May 26, 2024 | EF3 | 21 km | 12.4 mi | 0 |
| May 25, 2011 | EF3 | 82 km | 47.4 mi | 0 |
| Dec 31, 2010 | EF3 | 86 km | 11.0 mi | 2 |
| Dec 31, 2010 | EF3 | 73 km | 7.5 mi | 0 |
| May 8, 2009 | EF3 | 41 km | 2.2 mi | 0 |
| Jan 7, 2008 | EF3 | 88 km | 4.7 mi | 0 |
| Jan 7, 2008 | EF3 | 88 km | 1.8 mi | 0 |
| Mar 1, 2007 | EF3 | 79 km | 15.0 mi | 1 |
| Jun 1, 1999 | EF3 | 91 km | 7.0 mi | 0 |
| Oct 18, 1984 | EF3 | 47 km | 26.0 mi | 1 |
| Apr 2, 1982 | EF3 | 93 km | 1.5 mi | 2 |
| Apr 11, 1979 | EF3 | 45 km | 35.4 mi | 0 |
| Jul 19, 1970 | EF3 | 58 km | 5.0 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 | 58 km |
| 2011 | UNNAMED | 9,641 | 66 km |
| 2022 | CEDAR BLUFF | 9,617 | 59 km |
| 2020 | BIG BARREN CREEK | 8,150 | 55 km |
| 2022 | STEGALL MOUNTAIN | 6,979 | 42 km |
| 2015 | 15 STEGAL MOUNTAIN | 5,112 | 42 km |
| 2021 | ROCK PILE | 5,067 | 45 km |
| 2011 | MINNINGHAW | 4,792 | 42 km |
| 2024 | BRIDGES RX | 4,781 | 70 km |
| 2009 | STEGAL MTN. COMPLEX | 4,717 | 43 km |
| 2017 | UNNAMED | 4,602 | 41 km |
| 2023 | ELM SPRINGS RX | 4,378 | 77 km |
| 2021 | MILLER KING | 4,130 | 99 km |
| 2023 | CANNON RANGE RX | 3,870 | 71 km |
| 2021 | UNNAMED | 3,665 | 44 km |
| 1999 | STEGALL99 | 3,415 | 43 km |
| 2021 | KAINTUCK | 3,325 | 77 km |
| 2013 | UNNAMED | 3,313 | 94 km |
| 2005 | UNNAMED | 3,252 | 40 km |
| 2024 | WOLF MOUNTAIN RX | 3,140 | 77 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 33°F (1°C) | 2.8 in | Coldest, Driest |
| February | 37°F (3°C) | 2.9 in | |
| March | 46°F (8°C) | 4.3 in | |
| April | 56°F (13°C) | 5.4 in | |
| May | 65°F (18°C) | 8.1 in | Wettest |
| June | 73°F (23°C) | 4.1 in | |
| July | 78°F (25°C) | 3.7 in | Warmest |
| August | 76°F (24°C) | 3.9 in | |
| September | 68°F (20°C) | 3.7 in | |
| October | 57°F (14°C) | 4.0 in | |
| November | 46°F (8°C) | 4.7 in | |
| December | 37°F (3°C) | 3.0 in |
Summersville has a seasonal temperature swing of 44°F / from 33°F in January to 78°F in July. Total annual precipitation is 50.6 inches, with May being the wettest month (8.1") and January the driest (2.8").