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Weather & Climate in Winona, MO
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Winona enjoys a temperate climate with an average annual temperature of 56°F (13°C). Winters average 32°F in January while summers reach 77°F in July. The area gets 255 sunny days per year, above the national average. Annual precipitation totals 44.5 inches. The area receives 2.4 inches of snow annually. Air quality is rated Good with a median AQI of 41. The city sits at an elevation of 942 feet.
Temperature
32°F Jan (-0°C)
77°F Jul (25°C)
| Annual Average | 55.9°F |
| 4% above US avg | |
| January Average | 32°F (-0°C) |
| July Average | 77°F (25°C) |
| Sunny Days | 255 days/yr |
Geography
| Elevation | 942 ft (287 m) |
| Area | 3.8 sq mi (9.9 km²) |
| Population Density | 218/sq mi |
| Coordinates | 37.0098°N, 91.3235°W |
| Timezone | America/Chicago |
| Nearest Airport | Sharp County Regional (CKK) 53 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 41.0 |
| Rating | Good |
Earthquake History
92 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.5.
| May 4, 1991 | 2 km NNW of Risco, Missouri | M4.5 | 142 km | 11 km |
| Oct 21, 1999 | 9 km NW of Maynard, Arkansas | M3.9 | 66 km | 10 km |
| Aug 22, 2000 | 19 km WNW of Maynard, Arkansas | M3.9 | 63 km | 10 km |
| Jun 7, 2011 | 18 km NNW of Potosi, Missouri | M3.9 | 124 km | 21 km |
| Jul 7, 1991 | 11 km ENE of Brandsville, Missouri | M3.9 | 42 km | 8 km |
| Sep 12, 2019 | 13 km N of Big Flat, Arkansas | M3.7 | 138 km | 18 km |
| Aug 16, 2003 | 5 km W of Thomasville, Missouri | M3.7 | 34 km | 0 km |
| Sep 22, 2011 | 6 km E of Grandin, Missouri | M3.6 | 55 km | 11 km |
| Aug 20, 1994 | 4 km NE of Black Rock, Arkansas | M3.5 | 100 km | 10 km |
| Jun 15, 2004 | 3 km S of Canalou, Missouri | M3.5 | 149 km | 5 km |
| Jan 20, 2010 | 4 km WNW of Lynn, Arkansas | M3.3 | 110 km | 0 km |
| Feb 6, 1993 | 6 km NNW of Catron, Missouri | M3.3 | 147 km | 8 km |
| Aug 27, 1993 | 5 km SSE of Olympian Village, Missouri | M3.3 | 143 km | 22 km |
| Aug 21, 2022 | 4 km SSW of Imboden, Arkansas | M3.1 | 94 km | 16 km |
| Mar 12, 2002 | 6 km S of Marble Hill, Missouri | M3.1 | 124 km | 10 km |
| Jun 29, 1995 | 2 km WNW of Catron, Missouri | M3.1 | 148 km | 4 km |
| Oct 21, 1999 | 10 km NW of Maynard, Arkansas | M3.1 | 66 km | 9 km |
| May 15, 2014 | 4 km W of Malden, Missouri | M3.1 | 127 km | 6 km |
| Mar 18, 1990 | 9 km W of Alton, Missouri | M3.0 | 39 km | 1 km |
| Jun 27, 2025 | 12 km WSW of Grandin, Missouri | M2.9 | 43 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
362 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 40 fatalities, 651 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Apr 24, 2002 | EF4 | 27 km | 40.5 mi | 0 |
| Dec 24, 1982 | EF4 | 96 km | 63.0 mi | 0 |
| Apr 2, 1982 | EF4 | 94 km | 20.0 mi | 2 |
| Apr 22, 1981 | EF4 | 92 km | 63.0 mi | 1 |
| Dec 21, 1967 | EF4 | 77 km | 27.9 mi | 3 |
| May 21, 1957 | EF4 | 15 km | 9.1 mi | 7 |
| Mar 25, 1954 | EF4 | 87 km | 12.1 mi | 2 |
| May 26, 2024 | EF3 | 41 km | 12.4 mi | 0 |
| May 25, 2011 | EF3 | 47 km | 47.4 mi | 0 |
| May 8, 2009 | EF3 | 56 km | 2.2 mi | 0 |
| Mar 1, 2007 | EF3 | 87 km | 15.0 mi | 1 |
| Apr 2, 2006 | EF3 | 93 km | 77.0 mi | 2 |
| Oct 18, 1984 | EF3 | 32 km | 26.0 mi | 1 |
| Dec 2, 1982 | EF3 | 96 km | 9.0 mi | 0 |
| Apr 2, 1982 | EF3 | 96 km | 1.5 mi | 2 |
| Apr 11, 1979 | EF3 | 71 km | 35.4 mi | 0 |
| Feb 21, 1976 | EF3 | 82 km | 23.7 mi | 1 |
| May 7, 1973 | EF3 | 91 km | 36.0 mi | 0 |
| Jul 19, 1970 | EF3 | 35 km | 5.0 mi | 0 |
| Apr 30, 1970 | EF3 | 80 km | 8.2 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 | 23 km |
| 2011 | UNNAMED | 9,641 | 32 km |
| 2022 | CEDAR BLUFF | 9,617 | 25 km |
| 2020 | BIG BARREN CREEK | 8,150 | 20 km |
| 2022 | STEGALL MOUNTAIN | 6,979 | 14 km |
| 2010 | WYLIE KING 1 | 6,077 | 69 km |
| 2015 | 15 STEGAL MOUNTAIN | 5,112 | 14 km |
| 2021 | ROCK PILE | 5,067 | 65 km |
| 2011 | MINNINGHAW | 4,792 | 50 km |
| 2024 | BRIDGES RX | 4,781 | 36 km |
| 2009 | STEGAL MTN. COMPLEX | 4,717 | 14 km |
| 2017 | UNNAMED | 4,602 | 50 km |
| 2021 | MILLER KING | 4,130 | 65 km |
| 2021 | UNNAMED | 3,665 | 79 km |
| 1999 | STEGALL99 | 3,415 | 14 km |
| 2013 | UNNAMED | 3,313 | 61 km |
| 2005 | UNNAMED | 3,252 | 48 km |
| 2021 | VICTORY 1-7 | 3,237 | 71 km |
| 2024 | WOLF MOUNTAIN RX | 3,140 | 45 km |
| 1988 | HANES 1 | 3,139 | 17 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 32°F (-0°C) | 2.4 in | Coldest, Driest |
| February | 37°F (3°C) | 2.7 in | |
| March | 46°F (8°C) | 4.5 in | |
| April | 56°F (14°C) | 4.2 in | |
| May | 64°F (18°C) | 4.6 in | Wettest |
| June | 72°F (22°C) | 3.6 in | |
| July | 77°F (25°C) | 3.7 in | Warmest |
| August | 76°F (24°C) | 3.8 in | |
| September | 69°F (21°C) | 3.9 in | |
| October | 58°F (14°C) | 3.0 in | |
| November | 46°F (8°C) | 4.3 in | |
| December | 36°F (2°C) | 4.0 in |
Winona has a seasonal temperature swing of 46°F / from 32°F in January to 77°F in July. Total annual precipitation is 44.5 inches, with May being the wettest month (4.6") and January the driest (2.4").