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Weather & Climate in Seneca, MO
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Seneca enjoys a temperate climate with an average annual temperature of 57°F (14°C). Winters average 33°F in January while summers reach 79°F in July. The area gets 255 sunny days per year, above the national average. Annual precipitation totals 44.7 inches. The area receives 1.8 inches of snow annually. Air quality is rated Good with a median AQI of 41. The city sits at an elevation of 860 feet.
Temperature
33°F Jan (1°C)
79°F Jul (26°C)
| Annual Average | 57.1°F |
| 6% above US avg | |
| January Average | 33°F (1°C) |
| July Average | 79°F (26°C) |
| Sunny Days | 255 days/yr |
Geography
| Elevation | 860 ft (262 m) |
| Area | 2.6 sq mi (6.6 km²) |
| Population Density | 757/sq mi |
| Coordinates | 36.8397°N, 94.6092°W |
| Timezone | America/Chicago |
| Nearest Airport | Miami Regional (MIO) 16 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 41.0 |
| Rating | Good |
Earthquake History
6 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M2.8.
| Mar 23, 2024 | 9 km SE of Foyil, Oklahoma | M2.8 | 92 km | 5 km |
| Jan 14, 2016 | 7 km W of Talala, Oklahoma | M2.7 | 110 km | 5 km |
| Apr 3, 2016 | Arkansas-Oklahoma border region | M2.7 | 134 km | 5 km |
| Sep 3, 2015 | 6 km WSW of Vera, Oklahoma | M2.6 | 128 km | 5 km |
| May 21, 2010 | 2 km SW of Centerton, Arkansas | M2.6 | 61 km | 1 km |
| Apr 29, 2010 | 3 km SW of Centerton, Arkansas | M2.5 | 62 km | 0 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Tornado History
707 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF5. Total: 230 fatalities, 2,235 injuries.
| Date | Rating | Distance | Path | Fatalities |
| May 22, 2011 | EF5 | 24 km | 21.6 mi | 158 |
| May 10, 2008 | EF4 | 50 km | 75.5 mi | 21 |
| May 4, 2003 | EF4 | 78 km | 33.0 mi | 4 |
| Apr 24, 1975 | EF4 | 3 km | 11.9 mi | 3 |
| Sep 27, 1959 | EF4 | 57 km | 20.4 mi | 1 |
| Apr 3, 1956 | EF4 | 33 km | 41.8 mi | 0 |
| May 25, 2024 | EF3 | 60 km | 7.9 mi | 0 |
| Mar 30, 2022 | EF3 | 90 km | 5.2 mi | 0 |
| May 22, 2019 | EF3 | 30 km | 9.2 mi | 0 |
| May 22, 2019 | EF3 | 62 km | 11.3 mi | 3 |
| May 22, 2011 | EF3 | 47 km | 17.9 mi | 0 |
| Dec 31, 2010 | EF3 | 94 km | 21.1 mi | 4 |
| Mar 12, 2006 | EF3 | 74 km | 42.0 mi | 1 |
| Mar 12, 2006 | EF3 | 93 km | 29.0 mi | 0 |
| Mar 12, 2006 | EF3 | 68 km | 25.0 mi | 0 |
| Apr 21, 2005 | EF3 | 92 km | 5.0 mi | 0 |
| May 4, 2003 | EF3 | 82 km | 86.0 mi | 5 |
| May 4, 2003 | EF3 | 38 km | 49.0 mi | 7 |
| May 4, 2003 | EF3 | 40 km | 25.0 mi | 5 |
| Apr 19, 2000 | EF3 | 94 km | 34.0 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950-2024, US only).
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: TELAMAY HOLLOW (5,686 acres, 2009).
| Year | Name | Acres Burned | Distance |
| 2009 | TELAMAY HOLLOW | 5,686 | 93 km |
| 2009 | SAWMILL HOLLOW | 5,166 | 90 km |
| 1992 | UNNAMED | 4,546 | 84 km |
| 2004 | UNNAMED | 4,424 | 79 km |
| 1995 | F128 | 4,210 | 91 km |
| 2024 | NATURE FIRE | 3,744 | 91 km |
| 1986 | UNNAMED | 3,427 | 9 km |
| 2007 | UNNAMED | 3,160 | 63 km |
| 2016 | RXBURN | 2,951 | 80 km |
| 1996 | UNNAMED | 2,918 | 84 km |
| 2021 | BRUSH CREEK | 2,814 | 53 km |
| 2004 | UNNAMED | 2,661 | 63 km |
| 2020 | TWIN PEAKS | 2,578 | 79 km |
| 2023 | RX TWIN PEAKS | 2,560 | 79 km |
| 2002 | ROUNDTPCOX | 2,248 | 66 km |
| 2017 | CHEWI PROCTOR | 2,176 | 93 km |
| 2021 | EAST FORK | 2,134 | 85 km |
| 2021 | BIG CREEK | 2,123 | 62 km |
| 1992 | UNNAMED | 1,996 | 64 km |
| 1995 | UNNAMED | 1,992 | 64 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 33°F (1°C) | 1.8 in | Coldest, Driest |
| February | 39°F (4°C) | 2.2 in | |
| March | 48°F (9°C) | 3.8 in | |
| April | 57°F (14°C) | 4.2 in | |
| May | 65°F (19°C) | 5.1 in | |
| June | 74°F (23°C) | 4.9 in | |
| July | 79°F (26°C) | 3.2 in | Warmest |
| August | 78°F (26°C) | 3.7 in | |
| September | 70°F (21°C) | 5.2 in | Wettest |
| October | 59°F (15°C) | 3.9 in | |
| November | 47°F (8°C) | 4.1 in | |
| December | 37°F (3°C) | 2.8 in |
Seneca has a seasonal temperature swing of 46°F / from 33°F in January to 79°F in July. Total annual precipitation is 44.7 inches, with September being the wettest month (5.2") and January the driest (1.8").