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Weather & Climate in Mexico, MO
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Mexico experiences four distinct seasons with an average annual temperature of 53°F (12°C). Winters average 26°F in January while summers reach 77°F in July. The area gets 264 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Annual precipitation totals 39.9 inches. The area receives 5.9 inches of snow annually. Air quality is rated Good with a median AQI of 41. The city sits at an elevation of 804 feet.
Temperature
26°F Jan (-3°C)
77°F Jul (25°C)
| Annual Average | 53.4°F |
| 1% below US avg | |
| January Average | 26°F (-3°C) |
| July Average | 77°F (25°C) |
| Sunny Days | 264 days/yr |
Geography
| Elevation | 804 ft (245 m) |
| Area | 12.4 sq mi (32.1 km²) |
| Population Density | 944/sq mi |
| Coordinates | 39.1698°N, 91.8830°W |
| Timezone | America/Chicago |
| Nearest Airport | Columbia Regional (COU) 30 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 41.0 |
| Rating | Good |
Earthquake History
13 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.9.
| Jun 7, 2011 | 18 km NNW of Potosi, Missouri | M3.9 | 148 km | 21 km |
| Jul 31, 2005 | Missouri | M3.3 | 89 km | 5 km |
| Jan 21, 1992 | 5 km SE of Linn Creek, Missouri | M3.1 | 147 km | 5 km |
| Feb 8, 2004 | 6 km SSW of Stoutsville, Missouri | M2.9 | 36 km | 5 km |
| Jul 8, 2003 | 1 km N of Leasburg, Missouri | M2.9 | 128 km | 4 km |
| Apr 29, 2022 | 1 km SSW of Peerless Park, Missouri | M2.8 | 139 km | 8 km |
| May 5, 2008 | 3 km SSE of Fenton, Missouri | M2.8 | 148 km | 19 km |
| Sep 5, 2015 | 5 km SE of High Ridge, Missouri | M2.7 | 147 km | 8 km |
| Mar 7, 2009 | 7 km S of Miramiguoa Park, Missouri | M2.6 | 131 km | 7 km |
| Feb 3, 2014 | 18 km NW of Potosi, Missouri | M2.6 | 148 km | 14 km |
| Sep 19, 2024 | 1 km S of Old Monroe, Missouri | M2.6 | 102 km | 2 km |
| Jul 15, 2025 | 3 km W of Hale, Missouri | M2.5 | 138 km | 8 km |
| Jan 15, 1998 | 1 km SSE of Fenton, Missouri | M2.5 | 146 km | 16 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
351 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 10 fatalities, 144 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Mar 12, 2006 | EF4 | 40 km | 29.0 mi | 0 |
| Apr 23, 1975 | EF4 | 88 km | 28.2 mi | 1 |
| Apr 20, 1973 | EF4 | 99 km | 3.8 mi | 1 |
| Jun 12, 1970 | EF4 | 96 km | 16.1 mi | 0 |
| Mar 13, 2006 | EF3 | 46 km | 44.5 mi | 0 |
| Mar 13, 2006 | EF3 | 60 km | 6.0 mi | 0 |
| Mar 12, 2006 | EF3 | 54 km | 19.7 mi | 4 |
| May 10, 2003 | EF3 | 57 km | 12.0 mi | 0 |
| Nov 10, 1998 | EF3 | 46 km | 2.0 mi | 0 |
| Jul 4, 1995 | EF3 | 54 km | 26.0 mi | 0 |
| Nov 27, 1990 | EF3 | 46 km | 12.0 mi | 0 |
| Nov 27, 1990 | EF3 | 59 km | 1.0 mi | 0 |
| Apr 29, 1984 | EF3 | 87 km | 8.0 mi | 0 |
| May 1, 1983 | EF3 | 80 km | 9.0 mi | 0 |
| Apr 13, 1974 | EF3 | 88 km | 0.1 mi | 0 |
| Jun 12, 1970 | EF3 | 5 km | 16.0 mi | 0 |
| Jun 12, 1970 | EF3 | 81 km | 8.5 mi | 0 |
| May 14, 1961 | EF3 | 79 km | 127.1 mi | 0 |
| Apr 24, 1961 | EF3 | 86 km | 64.2 mi | 0 |
| Feb 20, 2014 | EF2 | 98 km | 12.1 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
2 wildfires (100+ acres) recorded within 100 km. Largest: WOOLDRIDGE FIRE (1,323 acres, 2022).
| Year | Name | Acres Burned | Distance |
| 2022 | WOOLDRIDGE FIRE | 1,323 | 61 km |
| 2010 | KK RANCH ROAD | 1,112 | 98 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 26°F (-3°C) | 1.6 in | Coldest, Driest |
| February | 32°F (-0°C) | 1.8 in | |
| March | 43°F (6°C) | 3.2 in | |
| April | 54°F (12°C) | 3.9 in | |
| May | 64°F (18°C) | 5.0 in | Wettest |
| June | 73°F (23°C) | 4.4 in | |
| July | 77°F (25°C) | 3.7 in | Warmest |
| August | 75°F (24°C) | 3.7 in | |
| September | 67°F (20°C) | 3.9 in | |
| October | 56°F (13°C) | 3.1 in | |
| November | 43°F (6°C) | 3.3 in | |
| December | 32°F (-0°C) | 2.5 in |
Mexico has a seasonal temperature swing of 51°F / from 26°F in January to 77°F in July. Total annual precipitation is 39.9 inches, with May being the wettest month (5.0") and January the driest (1.6").