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Weather & Climate in Longtown, MO
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Longtown enjoys a temperate climate with an average annual temperature of 56°F (13°C). Winters average 30°F in January while summers reach 78°F in July. The area gets 257 sunny days per year, above the national average. Annual precipitation totals 43.6 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 653 feet.
Temperature
30°F Jan (-1°C)
78°F Jul (26°C)
| Annual Average | 55.9°F |
| 4% above US avg | |
| January Average | 30°F (-1°C) |
| July Average | 78°F (26°C) |
| Sunny Days | 257 days/yr |
Geography
| Elevation | 653 ft (199 m) |
| Area | 0.1 sq mi (0.3 km²) |
| Population Density | 762/sq mi |
| Coordinates | 37.6698°N, 89.7737°W |
| Timezone | America/Chicago |
| Nearest Airport | Cape Girardeau Regional (CGI) 34 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 41.0 |
| Rating | Good |
Earthquake History
229 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.8.
| Sep 26, 1990 | 4 km SE of Chaffee, Missouri | M4.8 | 59 km | 1 km |
| May 4, 1991 | 2 km NNW of Risco, Missouri | M4.5 | 122 km | 11 km |
| Feb 5, 1994 | 2 km WNW of Dongola, Illinois | M4.2 | 62 km | 16 km |
| Jun 6, 2003 | 1 km NE of Bardwell, Kentucky | M4.0 | 112 km | 3 km |
| Jun 7, 2011 | 18 km NNW of Potosi, Missouri | M3.9 | 109 km | 21 km |
| Feb 21, 2012 | 4 km SSE of Bertrand, Missouri | M3.9 | 94 km | 8 km |
| Mar 2, 2010 | 2 km ENE of East Prairie, Missouri | M3.7 | 105 km | 8 km |
| Jan 2, 2006 | 3 km NNE of Eldorado, Illinois | M3.6 | 121 km | 7 km |
| Sep 22, 2011 | 6 km E of Grandin, Missouri | M3.6 | 128 km | 11 km |
| Jun 20, 2005 | 4 km WSW of Blandville, Kentucky | M3.6 | 107 km | 19 km |
| Mar 15, 2017 | 9 km ESE of Wyatt, Missouri | M3.6 | 105 km | 8 km |
| Jul 16, 2004 | 6 km SE of Wyatt, Missouri | M3.5 | 104 km | 4 km |
| Jun 15, 2004 | 3 km S of Canalou, Missouri | M3.5 | 105 km | 5 km |
| May 1, 2016 | 5 km SE of New Grand Chain, Illinois | M3.5 | 86 km | 16 km |
| Sep 9, 2016 | 9 km NW of Tiptonville, Tennessee | M3.4 | 137 km | 10 km |
| Mar 2, 1990 | 9 km NW of Vernon, Illinois | M3.4 | 142 km | 0 km |
| Sep 26, 1994 | 4 km ENE of Blandville, Kentucky | M3.4 | 109 km | 13 km |
| Aug 27, 1993 | 5 km SSE of Olympian Village, Missouri | M3.3 | 75 km | 22 km |
| Feb 6, 1993 | 6 km NNW of Catron, Missouri | M3.3 | 112 km | 8 km |
| Jun 17, 2012 | 6 km NW of Tiptonville, Tennessee | M3.3 | 142 km | 8 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Tornado History
595 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF5. Total: 72 fatalities, 1,015 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Dec 18, 1957 | EF5 | 65 km | 5.4 mi | 1 |
| Feb 28, 2017 | EF4 | 21 km | 53.5 mi | 1 |
| Nov 17, 2013 | EF4 | 88 km | 10.6 mi | 2 |
| Feb 29, 2012 | EF4 | 99 km | 26.1 mi | 8 |
| Sep 22, 2006 | EF4 | 5 km | 27.5 mi | 0 |
| May 6, 2003 | EF4 | 79 km | 33.0 mi | 2 |
| May 29, 1982 | EF4 | 58 km | 17.0 mi | 10 |
| Jun 22, 1969 | EF4 | 69 km | 15.1 mi | 4 |
| Dec 18, 1957 | EF4 | 26 km | 28.3 mi | 11 |
| Dec 18, 1957 | EF4 | 91 km | 16.8 mi | 1 |
| May 26, 2024 | EF3 | 68 km | 4.9 mi | 0 |
| May 26, 2024 | EF3 | 97 km | 19.6 mi | 0 |
| Oct 24, 2021 | EF3 | 56 km | 18.8 mi | 0 |
| Oct 24, 2021 | EF3 | 56 km | 16.7 mi | 0 |
| Nov 17, 2013 | EF3 | 72 km | 14.3 mi | 0 |
| Feb 29, 2012 | EF3 | 93 km | 20.0 mi | 1 |
| Mar 11, 2006 | EF3 | 26 km | 53.5 mi | 2 |
| Mar 11, 2006 | EF3 | 70 km | 5.1 mi | 0 |
| May 6, 2003 | EF3 | 34 km | 2.0 mi | 0 |
| Apr 28, 2002 | EF3 | 51 km | 19.3 mi | 1 |
Source: NOAA Storm Prediction Center (EF0+, 1950-2024, US only).
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: RED SHALE UNIT RX (2,123 acres, 2021).
| Year | Name | Acres Burned | Distance |
| 2021 | RED SHALE UNIT RX | 2,123 | 61 km |
| 2014 | UNNAMED | 1,627 | 49 km |
| 2019 | ATWOOD RIDGE RX | 1,622 | 49 km |
| 2000 | UNNAMED | 1,552 | 75 km |
| 1999 | UNNAMED | 1,483 | 75 km |
| 2020 | UNNAMED | 1,334 | 63 km |
| 2000 | UNNAMED | 1,260 | 88 km |
| 2024 | RED SHALE RX | 1,259 | 61 km |
| 2017 | UNNAMED | 1,257 | 53 km |
| 2021 | OZARK HILL PRAIRIE RX | 1,235 | 53 km |
| 2019 | KINKAID RX | 1,215 | 33 km |
| 2000 | UNNAMED | 1,187 | 90 km |
| 2022 | JOHNSON MOUNTAIN | 1,155 | 99 km |
| 2022 | KINKAID STATE FISH AND WILDLIFE AREA RX | 1,115 | 33 km |
| 2024 | RENAULT | 1,085 | 99 km |
| 2021 | STATE OF ILLINOIS TRACT RX | 1,011 | 30 km |
| 2022 | BEAN RIDGE RX | 955 | 58 km |
| 2021 | MILL CREEK RX | 898 | 46 km |
| 2024 | HAMPTON NORTH RX | 807 | 61 km |
| 2005 | UNNAMED | 741 | 67 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 30°F (-1°C) | 2.4 in | Coldest, Driest |
| February | 35°F (2°C) | 2.7 in | |
| March | 46°F (8°C) | 4.3 in | |
| April | 56°F (13°C) | 4.0 in | |
| May | 65°F (18°C) | 4.5 in | Wettest |
| June | 74°F (23°C) | 3.8 in | |
| July | 78°F (26°C) | 4.0 in | Warmest |
| August | 76°F (25°C) | 3.7 in | |
| September | 70°F (21°C) | 3.4 in | |
| October | 58°F (15°C) | 2.9 in | |
| November | 46°F (8°C) | 4.1 in | |
| December | 36°F (2°C) | 3.8 in |
Longtown has a seasonal temperature swing of 48°F / from 30°F in January to 78°F in July. Total annual precipitation is 43.6 inches, with May being the wettest month (4.5") and January the driest (2.4").