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Weather & Climate in Mill Spring, MO
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Mill Spring enjoys a temperate climate with an average annual temperature of 56°F (13°C). Winters average 31°F in January while summers reach 78°F in July. The area gets 254 sunny days per year, above the national average. Annual precipitation totals 45.1 inches. The area receives 2.7 inches of snow annually. Air quality is rated Good with a median AQI of 41. The city sits at an elevation of 443 feet.
Temperature
31°F Jan (-0°C)
78°F Jul (26°C)
| Annual Average | 56.1°F |
| 4% above US avg | |
| January Average | 31°F (-0°C) |
| July Average | 78°F (26°C) |
| Sunny Days | 254 days/yr |
Geography
| Elevation | 443 ft (135 m) |
| Area | 0.4 sq mi (1.1 km²) |
| Population Density | 261/sq mi |
| Coordinates | 37.0620°N, 90.6840°W |
| Timezone | America/Chicago |
| Nearest Airport | Poplar Bluff Regional Business (POF) 28 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 41.0 |
| Rating | Good |
Earthquake History
366 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 | 96 km | 1 km |
| May 4, 1991 | 2 km NNW of Risco, Missouri | M4.5 | 94 km | 11 km |
| May 1, 2005 | 5 km SSE of Manila, Arkansas | M4.2 | 145 km | 10 km |
| Feb 5, 1994 | 2 km WNW of Dongola, Illinois | M4.2 | 137 km | 16 km |
| Feb 10, 2005 | 3 km NNW of Etowah, Arkansas | M4.1 | 150 km | 15 km |
| Jun 2, 2005 | 12 km S of Ridgely, Tennessee | M4.0 | 148 km | 15 km |
| Apr 30, 2003 | 1 km N of Blytheville, Arkansas | M4.0 | 142 km | 24 km |
| Aug 22, 2000 | 19 km WNW of Maynard, Arkansas | M3.9 | 75 km | 10 km |
| Jul 7, 1991 | 11 km ENE of Brandsville, Missouri | M3.9 | 89 km | 8 km |
| Feb 21, 2012 | 4 km SSE of Bertrand, Missouri | M3.9 | 114 km | 8 km |
| Oct 21, 1999 | 9 km NW of Maynard, Arkansas | M3.9 | 69 km | 10 km |
| Jun 7, 2011 | 18 km NNW of Potosi, Missouri | M3.9 | 115 km | 21 km |
| Nov 29, 1996 | 1 km W of Blytheville, Arkansas | M3.8 | 143 km | 19 km |
| May 16, 2024 | 6 km S of Ridgely, Tennessee | M3.8 | 144 km | 8 km |
| Mar 2, 2010 | 2 km ENE of East Prairie, Missouri | M3.7 | 122 km | 8 km |
| Aug 16, 2003 | 5 km W of Thomasville, Missouri | M3.7 | 87 km | 0 km |
| Jan 16, 2018 | 4 km SW of Caruthersville, Missouri | M3.6 | 134 km | 9 km |
| Oct 15, 2017 | 6 km SE of Manila, Arkansas | M3.6 | 146 km | 17 km |
| Jun 20, 2005 | 4 km WSW of Blandville, Kentucky | M3.6 | 150 km | 19 km |
| Sep 22, 2011 | 6 km E of Grandin, Missouri | M3.6 | 28 km | 11 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
417 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 52 fatalities, 702 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Feb 28, 2017 | EF4 | 95 km | 53.5 mi | 1 |
| Apr 24, 2002 | EF4 | 31 km | 40.5 mi | 0 |
| Jan 21, 1999 | EF4 | 88 km | 16.0 mi | 0 |
| Apr 22, 1981 | EF4 | 57 km | 63.0 mi | 1 |
| Jun 22, 1969 | EF4 | 75 km | 15.1 mi | 4 |
| Dec 21, 1967 | EF4 | 79 km | 27.9 mi | 3 |
| May 21, 1957 | EF4 | 45 km | 9.1 mi | 7 |
| May 26, 2024 | EF3 | 98 km | 12.4 mi | 0 |
| May 26, 2024 | EF3 | 90 km | 19.6 mi | 0 |
| Oct 24, 2021 | EF3 | 76 km | 16.7 mi | 0 |
| Oct 24, 2021 | EF3 | 59 km | 18.8 mi | 0 |
| Nov 17, 2013 | EF3 | 85 km | 14.3 mi | 0 |
| Feb 29, 2012 | EF3 | 48 km | 20.0 mi | 1 |
| May 25, 2011 | EF3 | 31 km | 47.4 mi | 0 |
| Apr 2, 2006 | EF3 | 97 km | 77.0 mi | 2 |
| May 6, 2003 | EF3 | 97 km | 2.0 mi | 0 |
| Apr 27, 2002 | EF3 | 57 km | 4.0 mi | 1 |
| Oct 18, 1984 | EF3 | 81 km | 26.0 mi | 1 |
| Feb 21, 1976 | EF3 | 42 km | 23.7 mi | 1 |
| May 7, 1973 | EF3 | 46 km | 36.0 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 | 47 km |
| 2011 | UNNAMED | 9,641 | 46 km |
| 2022 | CEDAR BLUFF | 9,617 | 47 km |
| 2020 | BIG BARREN CREEK | 8,150 | 46 km |
| 2022 | STEGALL MOUNTAIN | 6,979 | 46 km |
| 2010 | WYLIE KING 1 | 6,077 | 21 km |
| 2015 | 15 STEGAL MOUNTAIN | 5,112 | 46 km |
| 2011 | MINNINGHAW | 4,792 | 74 km |
| 2024 | BRIDGES RX | 4,781 | 45 km |
| 2009 | STEGAL MTN. COMPLEX | 4,717 | 45 km |
| 2017 | UNNAMED | 4,602 | 74 km |
| 2021 | MILLER KING | 4,130 | 18 km |
| 1999 | STEGALL99 | 3,415 | 45 km |
| 2013 | UNNAMED | 3,313 | 14 km |
| 2005 | UNNAMED | 3,252 | 72 km |
| 2021 | VICTORY 1-7 | 3,237 | 24 km |
| 2024 | WOLF MOUNTAIN RX | 3,140 | 59 km |
| 1988 | HANES 1 | 3,139 | 53 km |
| 2021 | COUNCIL BLUFF | 3,035 | 76 km |
| 2011 | MUD POND | 3,030 | 55 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 31°F (-0°C) | 2.7 in | Coldest, Driest |
| February | 37°F (3°C) | 3.0 in | |
| March | 46°F (8°C) | 4.7 in | Wettest |
| April | 56°F (14°C) | 4.2 in | |
| May | 65°F (18°C) | 4.5 in | |
| June | 73°F (23°C) | 3.4 in | |
| July | 78°F (26°C) | 3.9 in | Warmest |
| August | 77°F (25°C) | 3.8 in | |
| September | 70°F (21°C) | 3.6 in | |
| October | 58°F (15°C) | 2.9 in | |
| November | 47°F (8°C) | 4.3 in | |
| December | 37°F (3°C) | 4.3 in |
Mill Spring has a seasonal temperature swing of 47°F / from 31°F in January to 78°F in July. Total annual precipitation is 45.1 inches, with March being the wettest month (4.7") and January the driest (2.7").