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Weather & Climate in Seymour, MO
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Seymour experiences four distinct seasons with an average annual temperature of 55°F (13°C). Winters average 31°F in January while summers reach 76°F in July. The area gets 257 sunny days per year, above the national average. Annual precipitation totals 43.4 inches. The area receives 5.1 inches of snow annually. Air quality is rated Good with a median AQI of 41. The city sits at an elevation of 1,657 feet.
Temperature
31°F Jan (-1°C)
76°F Jul (25°C)
| Annual Average | 54.9°F |
| 2% above US avg | |
| January Average | 31°F (-1°C) |
| July Average | 76°F (25°C) |
| Sunny Days | 257 days/yr |
Geography
| Elevation | 1,657 ft (505 m) |
| Area | 1.1 sq mi (2.8 km²) |
| Population Density | 598/sq mi |
| Coordinates | 37.1464°N, 92.7688°W |
| Timezone | America/Chicago |
| Nearest Airport | Waynesville-St Robert Regional Forney Field (TBN) 54 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 41.0 |
| Rating | Good |
Earthquake History
23 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 | 119 km | 8 km |
| Aug 16, 2003 | 5 km W of Thomasville, Missouri | M3.7 | 111 km | 0 km |
| Sep 12, 2019 | 13 km N of Big Flat, Arkansas | M3.7 | 118 km | 18 km |
| Jun 11, 2017 | 6 km NNE of Bergman, Arkansas | M3.6 | 88 km | 6 km |
| Jun 27, 2000 | 15 km WSW of Marshall, Arkansas | M3.4 | 145 km | 0 km |
| Jan 21, 1992 | 5 km SE of Linn Creek, Missouri | M3.1 | 95 km | 5 km |
| Mar 30, 2001 | 1 km SW of Hermitage, Missouri | M3.1 | 100 km | 5 km |
| Mar 18, 1990 | 9 km W of Alton, Missouri | M3.0 | 123 km | 1 km |
| Jun 16, 2017 | 6 km N of Bergman, Arkansas | M2.9 | 88 km | 6 km |
| Mar 12, 1990 | 9 km NNE of Briarcliff, Arkansas | M2.8 | 99 km | 0 km |
| May 14, 2007 | 12 km NE of Alton, Missouri | M2.7 | 136 km | 8 km |
| Jul 3, 2014 | 6 km S of Yellville, Arkansas | M2.7 | 110 km | 8 km |
| Nov 26, 1999 | 9 km NNE of Mountain Home, Arkansas | M2.7 | 89 km | 3 km |
| Feb 14, 2019 | 11 km WSW of Mountain View, Missouri | M2.6 | 88 km | 7 km |
| Apr 23, 2025 | 3 km E of Hartville, Missouri | M2.6 | 29 km | 4 km |
| Apr 29, 2018 | 3 km WNW of Evergreen, Missouri | M2.5 | 47 km | 2 km |
| May 13, 2015 | 8 km E of Lead Hill, Arkansas | M2.5 | 79 km | 0 km |
| Jun 21, 2017 | 6 km N of Bergman, Arkansas | M2.5 | 88 km | 5 km |
| Jan 4, 2024 | 13 km E of South Lead Hill, Arkansas | M2.5 | 82 km | 4 km |
| May 2, 2001 | 10 km NW of Bakersfield, Missouri | M2.5 | 79 km | 1 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
469 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 27 fatalities, 529 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Nov 29, 1991 | EF4 | 47 km | 10.0 mi | 2 |
| Apr 2, 1982 | EF4 | 81 km | 20.0 mi | 2 |
| Sep 26, 1959 | EF4 | 24 km | 7.8 mi | 0 |
| Mar 25, 1954 | EF4 | 52 km | 12.1 mi | 2 |
| May 26, 2024 | EF3 | 88 km | 12.4 mi | 0 |
| Dec 31, 2010 | EF3 | 79 km | 7.5 mi | 0 |
| May 8, 2009 | EF3 | 80 km | 2.2 mi | 0 |
| Jan 7, 2008 | EF3 | 38 km | 50.4 mi | 3 |
| Mar 1, 2007 | EF3 | 83 km | 15.0 mi | 1 |
| Mar 12, 2006 | EF3 | 15 km | 32.0 mi | 0 |
| Mar 12, 2006 | EF3 | 98 km | 17.0 mi | 0 |
| Mar 12, 2006 | EF3 | 93 km | 42.0 mi | 1 |
| May 4, 2003 | EF3 | 84 km | 14.0 mi | 4 |
| Apr 29, 1983 | EF3 | 61 km | 5.5 mi | 1 |
| Apr 2, 1982 | EF3 | 98 km | 1.5 mi | 2 |
| Apr 2, 1982 | EF3 | 94 km | 1.0 mi | 0 |
| Apr 11, 1979 | EF3 | 59 km | 35.4 mi | 0 |
| May 15, 1968 | EF3 | 92 km | 7.3 mi | 3 |
| Mar 24, 1954 | EF3 | 93 km | 1.0 mi | 0 |
| Apr 30, 2019 | EF2 | 39 km | 10.3 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: UNNAMED (7,388 acres, 1994).
| Year | Name | Acres Burned | Distance |
| 1994 | UNNAMED | 7,388 | 86 km |
| 2007 | UNNAMED | 6,931 | 49 km |
| 2011 | UNNAMED | 6,686 | 54 km |
| 2010 | BRUSHY/CLAYTON | 6,401 | 48 km |
| 2020 | BIG CREEK | 6,399 | 54 km |
| 1994 | UNNAMED | 5,344 | 68 km |
| 2021 | ROCK PILE | 5,067 | 69 km |
| 2006 | BIG SPRING FIRE | 4,921 | 84 km |
| 2010 | UNNAMED | 4,767 | 86 km |
| 2009 | MOUNTAIN CREEK | 4,322 | 73 km |
| 1991 | UNNAMED | 4,179 | 72 km |
| 2016 | BIG CREEK | 4,031 | 57 km |
| 2023 | CANNON RANGE RX | 3,870 | 71 km |
| 2021 | UNNAMED | 3,665 | 73 km |
| 1992 | UNNAMED | 3,538 | 88 km |
| 1991 | UNNAMED | 3,533 | 67 km |
| 1991 | UNNAMED | 3,492 | 77 km |
| 1994 | UNNAMED | 3,336 | 83 km |
| 1991 | UNNAMED | 3,135 | 76 km |
| 2012 | KINFOLK RD | 2,883 | 71 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 31°F (-1°C) | 1.9 in | Coldest, Driest |
| February | 36°F (2°C) | 2.2 in | |
| March | 46°F (8°C) | 3.9 in | |
| April | 55°F (13°C) | 4.1 in | |
| May | 63°F (17°C) | 4.8 in | Wettest |
| June | 71°F (22°C) | 4.2 in | |
| July | 76°F (25°C) | 3.5 in | Warmest |
| August | 75°F (24°C) | 3.5 in | |
| September | 68°F (20°C) | 4.5 in | |
| October | 57°F (14°C) | 3.8 in | |
| November | 45°F (7°C) | 3.8 in | |
| December | 35°F (2°C) | 3.2 in |
Seymour has a seasonal temperature swing of 46°F / from 31°F in January to 76°F in July. Total annual precipitation is 43.4 inches, with May being the wettest month (4.8") and January the driest (1.9").