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Weather & Climate in Zalma, MO
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Zalma enjoys a temperate climate with an average annual temperature of 57°F (14°C). Winters average 31°F in January while summers reach 79°F in July. The area gets 249 sunny days per year, above the national average. Annual precipitation totals 47.8 inches (wetter than the 38-inch national average). The area receives 3.1 inches of snow annually. Air quality is rated Good with a median AQI of 41. The city sits at an elevation of 440 feet.
Temperature
31°F Jan (-0°C)
79°F Jul (26°C)
| Annual Average | 56.6°F |
| 5% above US avg | |
| January Average | 31°F (-0°C) |
| July Average | 79°F (26°C) |
| Sunny Days | 249 days/yr |
Geography
| Elevation | 440 ft (134 m) |
| Area | 0.2 sq mi (0.5 km²) |
| Population Density | 367/sq mi |
| Coordinates | 37.1435°N, 90.0811°W |
| Timezone | America/Chicago |
| Nearest Airport | Cape Girardeau Regional (CGI) 27 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 41.0 |
| Rating | Good |
Earthquake History
399 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 | 42 km | 1 km |
| May 4, 1991 | 2 km NNW of Risco, Missouri | M4.5 | 67 km | 11 km |
| May 1, 2005 | 5 km SSE of Manila, Arkansas | M4.2 | 146 km | 10 km |
| Feb 5, 1994 | 2 km WNW of Dongola, Illinois | M4.2 | 83 km | 16 km |
| Jun 6, 2003 | 1 km NE of Bardwell, Kentucky | M4.0 | 101 km | 3 km |
| Jun 2, 2005 | 12 km S of Ridgely, Tennessee | M4.0 | 123 km | 15 km |
| Apr 30, 2003 | 1 km N of Blytheville, Arkansas | M4.0 | 134 km | 24 km |
| Jul 7, 1991 | 11 km ENE of Brandsville, Missouri | M3.9 | 142 km | 8 km |
| Oct 21, 1999 | 9 km NW of Maynard, Arkansas | M3.9 | 108 km | 10 km |
| Aug 22, 2000 | 19 km WNW of Maynard, Arkansas | M3.9 | 117 km | 10 km |
| Jun 7, 2011 | 18 km NNW of Potosi, Missouri | M3.9 | 127 km | 21 km |
| Feb 21, 2012 | 4 km SSE of Bertrand, Missouri | M3.9 | 66 km | 8 km |
| May 16, 2024 | 6 km S of Ridgely, Tennessee | M3.8 | 118 km | 8 km |
| Nov 29, 1996 | 1 km W of Blytheville, Arkansas | M3.8 | 136 km | 19 km |
| Mar 2, 2010 | 2 km ENE of East Prairie, Missouri | M3.7 | 76 km | 8 km |
| Aug 16, 2003 | 5 km W of Thomasville, Missouri | M3.7 | 140 km | 0 km |
| Apr 24, 2019 | 12 km NNW of Dyersburg, Tennessee | M3.7 | 126 km | 14 km |
| Jan 16, 2018 | 4 km SW of Caruthersville, Missouri | M3.6 | 115 km | 9 km |
| Oct 15, 2017 | 6 km SE of Manila, Arkansas | M3.6 | 146 km | 17 km |
| Sep 22, 2011 | 6 km E of Grandin, Missouri | M3.6 | 70 km | 11 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
532 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 51 fatalities, 764 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Feb 28, 2017 | EF4 | 65 km | 53.5 mi | 1 |
| Sep 22, 2006 | EF4 | 64 km | 27.5 mi | 0 |
| May 6, 2003 | EF4 | 94 km | 33.0 mi | 2 |
| Apr 24, 2002 | EF4 | 85 km | 40.5 mi | 0 |
| Apr 22, 1981 | EF4 | 68 km | 63.0 mi | 1 |
| Jun 22, 1969 | EF4 | 77 km | 15.1 mi | 4 |
| Dec 18, 1957 | EF4 | 82 km | 28.3 mi | 11 |
| May 21, 1957 | EF4 | 99 km | 9.1 mi | 7 |
| May 26, 2024 | EF3 | 50 km | 19.6 mi | 0 |
| Oct 24, 2021 | EF3 | 69 km | 16.7 mi | 0 |
| Oct 24, 2021 | EF3 | 52 km | 18.8 mi | 0 |
| Nov 17, 2013 | EF3 | 34 km | 14.3 mi | 0 |
| Feb 29, 2012 | EF3 | 29 km | 20.0 mi | 1 |
| May 25, 2011 | EF3 | 77 km | 47.4 mi | 0 |
| Mar 11, 2006 | EF3 | 76 km | 53.5 mi | 2 |
| May 6, 2003 | EF3 | 45 km | 2.0 mi | 0 |
| Apr 28, 2002 | EF3 | 71 km | 19.3 mi | 1 |
| Apr 27, 2002 | EF3 | 9 km | 4.0 mi | 1 |
| Apr 19, 1996 | EF3 | 68 km | 11.5 mi | 0 |
| Feb 21, 1976 | EF3 | 59 km | 23.7 mi | 1 |
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 | 100 km |
| 2011 | UNNAMED | 9,641 | 97 km |
| 2022 | CEDAR BLUFF | 9,617 | 100 km |
| 2020 | BIG BARREN CREEK | 8,150 | 99 km |
| 2022 | STEGALL MOUNTAIN | 6,979 | 99 km |
| 2010 | WYLIE KING 1 | 6,077 | 51 km |
| 2015 | 15 STEGAL MOUNTAIN | 5,112 | 99 km |
| 2024 | BRIDGES RX | 4,781 | 95 km |
| 2009 | STEGAL MTN. COMPLEX | 4,717 | 99 km |
| 2021 | MILLER KING | 4,130 | 52 km |
| 1999 | STEGALL99 | 3,415 | 99 km |
| 2013 | UNNAMED | 3,313 | 55 km |
| 2021 | VICTORY 1-7 | 3,237 | 51 km |
| 2021 | COUNCIL BLUFF | 3,035 | 99 km |
| 2013 | UNNAMED | 2,963 | 89 km |
| 2024 | COUNCIL BLUFF WEST RX | 2,846 | 99 km |
| 2004 | 04 RX CAMPBELL/BEAVER | 2,772 | 93 km |
| 2005 | MCKENZIE HILL | 2,722 | 68 km |
| 2010 | COUNCIL BLUFF LAKE | 2,651 | 99 km |
| 2019 | PECK RANCH | 2,598 | 96 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 31°F (-0°C) | 3.1 in | Coldest, Driest |
| February | 37°F (3°C) | 3.4 in | |
| March | 46°F (8°C) | 5.1 in | Wettest |
| April | 56°F (14°C) | 4.6 in | |
| May | 65°F (19°C) | 4.8 in | |
| June | 74°F (23°C) | 3.7 in | |
| July | 79°F (26°C) | 3.9 in | Warmest |
| August | 77°F (25°C) | 3.7 in | |
| September | 70°F (21°C) | 3.6 in | |
| October | 59°F (15°C) | 3.1 in | |
| November | 47°F (8°C) | 4.5 in | |
| December | 38°F (3°C) | 4.4 in |
Zalma has a seasonal temperature swing of 47°F / from 31°F in January to 79°F in July. Total annual precipitation is 47.8 inches, with March being the wettest month (5.1") and January the driest (3.1").