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Weather & Climate in Hamilton, MO
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Hamilton experiences four distinct seasons with an average annual temperature of 53°F (11°C). Winters average 25°F in January while summers reach 77°F in July. The area gets 270 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 36.3 inches. The area receives 3.8 inches of snow annually. Air quality is rated Good with a median AQI of 41. The city sits at an elevation of 994 feet.
Temperature
25°F Jan (-4°C)
77°F Jul (25°C)
| Annual Average | 52.6°F |
| 3% below US avg | |
| January Average | 25°F (-4°C) |
| July Average | 77°F (25°C) |
| Sunny Days | 270 days/yr |
Geography
| Elevation | 994 ft (303 m) |
| Area | 1.4 sq mi (3.7 km²) |
| Population Density | 1,299/sq mi |
| Coordinates | 39.7436°N, 93.9983°W |
| Timezone | America/Chicago |
| Nearest Airport | Kansas City International (MCI) 49 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 41.0 |
| Rating | Good |
Earthquake History
5 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.3.
| May 18, 2005 | Missouri | M3.3 | 143 km | 5 km |
| Mar 23, 2007 | 5 km N of Nortonville, Kansas | M3.1 | 119 km | 5 km |
| Feb 11, 1995 | 6 km E of Clearmont, Missouri | M3.1 | 117 km | 5 km |
| May 13, 1999 | 6 km WSW of Kansas City, Kansas | M3.0 | 94 km | 5 km |
| Jul 15, 2025 | 3 km W of Hale, Missouri | M2.5 | 55 km | 8 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
429 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 14 fatalities, 252 injuries.
| Date | Rating | Distance | Path | Fatalities |
| May 29, 2004 | EF4 | 26 km | 22.0 mi | 3 |
| May 4, 2003 | EF4 | 71 km | 5.0 mi | 0 |
| Jun 7, 1984 | EF4 | 75 km | 134.0 mi | 3 |
| Jun 2, 1980 | EF4 | 98 km | 31.2 mi | 0 |
| May 4, 1977 | EF4 | 64 km | 12.0 mi | 0 |
| May 4, 1977 | EF4 | 47 km | 48.6 mi | 0 |
| Apr 23, 1975 | EF4 | 5 km | 11.4 mi | 1 |
| Apr 21, 1973 | EF4 | 76 km | 14.6 mi | 0 |
| Jun 12, 1970 | EF4 | 98 km | 16.1 mi | 0 |
| Apr 21, 1967 | EF4 | 71 km | 59.0 mi | 0 |
| Mar 6, 2017 | EF3 | 90 km | 17.7 mi | 0 |
| May 2, 2008 | EF3 | 66 km | 0.9 mi | 0 |
| May 29, 2004 | EF3 | 75 km | 7.0 mi | 0 |
| Apr 11, 2001 | EF3 | 78 km | 76.5 mi | 0 |
| May 27, 1995 | EF3 | 92 km | 30.4 mi | 0 |
| May 4, 1977 | EF3 | 83 km | 26.2 mi | 1 |
| Apr 23, 1975 | EF3 | 56 km | 14.0 mi | 0 |
| May 5, 1971 | EF3 | 78 km | 3.8 mi | 0 |
| May 5, 1971 | EF3 | 87 km | 0.1 mi | 0 |
| Jun 26, 1969 | EF3 | 83 km | 10.1 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
1 wildfire (100+ acres) recorded within 100 km. Largest: HIGHWAY E (897 acres, 2012).
| Year | Name | Acres Burned | Distance |
| 2012 | HIGHWAY E | 897 | 25 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 25°F (-4°C) | 1.3 in | Coldest |
| February | 31°F (-1°C) | 1.0 in | Driest |
| March | 42°F (5°C) | 2.6 in | |
| April | 53°F (12°C) | 3.5 in | |
| May | 63°F (17°C) | 4.5 in | |
| June | 72°F (22°C) | 4.1 in | |
| July | 77°F (25°C) | 4.0 in | Warmest |
| August | 75°F (24°C) | 3.9 in | |
| September | 67°F (19°C) | 4.7 in | Wettest |
| October | 55°F (13°C) | 3.3 in | |
| November | 41°F (5°C) | 2.1 in | |
| December | 30°F (-1°C) | 1.5 in |
Hamilton has a seasonal temperature swing of 52°F / from 25°F in January to 77°F in July. Total annual precipitation is 36.4 inches, with September being the wettest month (4.7") and February the driest (1.0").