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Weather & Climate in Farmington, MO
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Farmington experiences four distinct seasons with an average annual temperature of 55°F (13°C). Winters average 30°F in January while summers reach 77°F in July. The area gets 258 sunny days per year, above the national average. Annual precipitation totals 42.9 inches. The area receives 8.3 inches of snow annually. Air quality is rated Good with a median AQI of 41. The city sits at an elevation of 919 feet.
Temperature
30°F Jan (-1°C)
77°F Jul (25°C)
| Annual Average | 54.7°F |
| 1% above US avg | |
| January Average | 30°F (-1°C) |
| July Average | 77°F (25°C) |
| Sunny Days | 258 days/yr |
Geography
| Elevation | 919 ft (280 m) |
| Area | 9.2 sq mi (23.8 km²) |
| Population Density | 1,897/sq mi |
| Coordinates | 37.7809°N, 90.4218°W |
| Timezone | America/Chicago |
| Nearest Airport | Farmington Regional (FAM) 2 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 41.0 |
| Rating | Good |
Earthquake History
117 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 | 100 km | 1 km |
| May 4, 1991 | 2 km NNW of Risco, Missouri | M4.5 | 144 km | 11 km |
| Feb 5, 1994 | 2 km WNW of Dongola, Illinois | M4.2 | 118 km | 16 km |
| Feb 21, 2012 | 4 km SSE of Bertrand, Missouri | M3.9 | 134 km | 8 km |
| Jun 7, 2011 | 18 km NNW of Potosi, Missouri | M3.9 | 54 km | 21 km |
| Mar 2, 2010 | 2 km ENE of East Prairie, Missouri | M3.7 | 145 km | 8 km |
| Sep 22, 2011 | 6 km E of Grandin, Missouri | M3.6 | 111 km | 11 km |
| May 1, 2016 | 5 km SE of New Grand Chain, Illinois | M3.5 | 141 km | 16 km |
| Jun 15, 2004 | 3 km S of Canalou, Missouri | M3.5 | 134 km | 5 km |
| Feb 6, 1993 | 6 km NNW of Catron, Missouri | M3.3 | 138 km | 8 km |
| Aug 27, 1993 | 5 km SSE of Olympian Village, Missouri | M3.3 | 35 km | 22 km |
| Dec 27, 1992 | 2 km E of Pocahontas, Missouri | M3.2 | 78 km | 10 km |
| Apr 6, 1994 | 2 km NE of Tamaroa, Illinois | M3.2 | 114 km | 15 km |
| Oct 24, 1990 | 5 km ENE of Woodlawn, Illinois | M3.2 | 142 km | 1 km |
| Mar 12, 2002 | 6 km S of Marble Hill, Missouri | M3.1 | 72 km | 10 km |
| Jan 23, 1991 | 3 km WSW of Logan, Illinois | M3.1 | 137 km | 1 km |
| May 15, 2014 | 4 km W of Malden, Missouri | M3.1 | 141 km | 6 km |
| Mar 31, 1993 | 3 km WNW of East Prairie, Missouri | M3.1 | 141 km | 4 km |
| Jun 29, 1995 | 2 km WNW of Catron, Missouri | M3.1 | 143 km | 4 km |
| May 3, 2011 | 3 km WSW of Wickliffe, Kentucky | M3.1 | 147 km | 0 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Tornado History
513 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 81 fatalities, 1,095 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Feb 28, 2017 | EF4 | 37 km | 53.5 mi | 1 |
| Sep 22, 2006 | EF4 | 53 km | 27.5 mi | 0 |
| Jun 22, 1969 | EF4 | 13 km | 15.1 mi | 4 |
| Jun 22, 1969 | EF4 | 62 km | 20.2 mi | 2 |
| Dec 21, 1967 | EF4 | 63 km | 27.9 mi | 3 |
| Feb 10, 1959 | EF4 | 85 km | 23.9 mi | 21 |
| Dec 18, 1957 | EF4 | 83 km | 28.3 mi | 11 |
| Feb 24, 1956 | EF4 | 86 km | 77.6 mi | 6 |
| Oct 24, 2021 | EF3 | 27 km | 18.8 mi | 0 |
| Oct 24, 2021 | EF3 | 9 km | 16.7 mi | 0 |
| Dec 31, 2010 | EF3 | 79 km | 6.7 mi | 1 |
| Mar 11, 2006 | EF3 | 37 km | 53.5 mi | 2 |
| Mar 11, 2006 | EF3 | 39 km | 5.1 mi | 0 |
| May 6, 2003 | EF3 | 80 km | 2.0 mi | 0 |
| Apr 27, 2002 | EF3 | 70 km | 4.0 mi | 1 |
| Apr 19, 1996 | EF3 | 49 km | 11.5 mi | 0 |
| May 1, 1983 | EF3 | 97 km | 16.0 mi | 0 |
| May 29, 1982 | EF3 | 72 km | 10.0 mi | 0 |
| Apr 22, 1981 | EF3 | 45 km | 7.1 mi | 1 |
| Apr 18, 1975 | EF3 | 64 km | 2.0 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950-2024, US only).
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: WYLIE KING 1 (6,077 acres, 2010).
| Year | Name | Acres Burned | Distance |
| 2010 | WYLIE KING 1 | 6,077 | 99 km |
| 2011 | MINNINGHAW | 4,792 | 89 km |
| 2017 | UNNAMED | 4,602 | 89 km |
| 2021 | MILLER KING | 4,130 | 97 km |
| 2022 | SMITH MILL HOLLOW | 3,978 | 55 km |
| 2013 | UNNAMED | 3,313 | 96 km |
| 2005 | UNNAMED | 3,252 | 90 km |
| 2021 | COUNCIL BLUFF | 3,035 | 46 km |
| 2022 | LITTLE CREEK | 3,004 | 90 km |
| 2013 | UNNAMED | 2,963 | 97 km |
| 2021 | HODGE HOLLOW | 2,922 | 91 km |
| 2024 | COUNCIL BLUFF WEST RX | 2,846 | 46 km |
| 2005 | UNNAMED | 2,751 | 48 km |
| 2005 | MCKENZIE HILL | 2,722 | 72 km |
| 2019 | UNNAMED | 2,688 | 59 km |
| 2010 | COUNCIL BLUFF LAKE | 2,651 | 46 km |
| 2022 | MINNINGHAW | 2,516 | 88 km |
| 2006 | UNNAMED | 2,512 | 46 km |
| 2021 | THOMPSON HOLLOW | 2,479 | 88 km |
| 2019 | UNNAMED | 2,399 | 81 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 30°F (-1°C) | 2.2 in | Coldest, Driest |
| February | 35°F (1°C) | 2.5 in | |
| March | 45°F (7°C) | 4.1 in | |
| April | 55°F (13°C) | 4.2 in | |
| May | 64°F (18°C) | 4.4 in | Wettest |
| June | 72°F (22°C) | 3.6 in | |
| July | 77°F (25°C) | 3.6 in | Warmest |
| August | 75°F (24°C) | 4.0 in | |
| September | 68°F (20°C) | 3.5 in | |
| October | 57°F (14°C) | 2.9 in | |
| November | 45°F (7°C) | 4.3 in | |
| December | 35°F (2°C) | 3.6 in |
Farmington has a seasonal temperature swing of 47°F / from 30°F in January to 77°F in July. Total annual precipitation is 42.9 inches, with May being the wettest month (4.4") and January the driest (2.2").