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Weather & Climate in Lewistown, MO
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Lewistown experiences four distinct seasons with an average annual temperature of 52°F (11°C). Winters average 24°F in January while summers reach 77°F in July. The area gets 267 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 37.8 inches. The area receives 4.9 inches of snow annually. Air quality is rated Good with a median AQI of 41. The city sits at an elevation of 732 feet.
Temperature
24°F Jan (-4°C)
77°F Jul (25°C)
| Annual Average | 52.3°F |
| 3% below US avg | |
| January Average | 24°F (-4°C) |
| July Average | 77°F (25°C) |
| Sunny Days | 267 days/yr |
Geography
| Elevation | 732 ft (223 m) |
| Area | 0.5 sq mi (1.3 km²) |
| Population Density | 872/sq mi |
| Coordinates | 40.0862°N, 91.8132°W |
| Timezone | America/Chicago |
| Nearest Airport | Quincy Regional-Baldwin Field (UIN) 34 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 41.0 |
| Rating | Good |
Earthquake History
2 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M2.9.
| Feb 8, 2004 | 6 km SSW of Stoutsville, Missouri | M2.9 | 66 km | 5 km |
| Jul 15, 2025 | 3 km W of Hale, Missouri | M2.5 | 145 km | 8 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
363 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 11 fatalities, 196 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Mar 12, 2006 | EF4 | 77 km | 29.0 mi | 0 |
| May 13, 1995 | EF4 | 70 km | 50.0 mi | 0 |
| Apr 23, 1975 | EF4 | 86 km | 28.2 mi | 1 |
| Apr 20, 1973 | EF4 | 59 km | 3.8 mi | 1 |
| Jan 24, 1967 | EF4 | 70 km | 25.7 mi | 0 |
| May 27, 2019 | EF3 | 67 km | 7.3 mi | 0 |
| May 10, 2003 | EF3 | 47 km | 12.0 mi | 0 |
| Apr 8, 1999 | EF3 | 90 km | 16.0 mi | 0 |
| Apr 8, 1999 | EF3 | 43 km | 7.5 mi | 0 |
| Jul 4, 1995 | EF3 | 93 km | 26.0 mi | 0 |
| Apr 13, 1974 | EF3 | 44 km | 0.1 mi | 0 |
| Apr 13, 1974 | EF3 | 35 km | 11.0 mi | 0 |
| Sep 30, 1973 | EF3 | 77 km | 0.1 mi | 0 |
| May 1, 1973 | EF3 | 38 km | 3.6 mi | 2 |
| Apr 20, 1973 | EF3 | 43 km | 9.5 mi | 0 |
| Jun 12, 1970 | EF3 | 69 km | 8.5 mi | 0 |
| Apr 16, 1967 | EF3 | 72 km | 19.4 mi | 2 |
| Jan 24, 1967 | EF3 | 90 km | 25.0 mi | 0 |
| Jan 24, 1967 | EF3 | 77 km | 4.3 mi | 1 |
| Aug 25, 1965 | EF3 | 97 km | 3.0 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 24°F (-4°C) | 1.5 in | Coldest |
| February | 30°F (-1°C) | 1.4 in | Driest |
| March | 41°F (5°C) | 2.9 in | |
| April | 53°F (12°C) | 3.4 in | |
| May | 63°F (17°C) | 4.5 in | Wettest |
| June | 72°F (22°C) | 3.7 in | |
| July | 77°F (25°C) | 4.4 in | Warmest |
| August | 75°F (24°C) | 3.7 in | |
| September | 67°F (19°C) | 4.4 in | |
| October | 55°F (13°C) | 3.1 in | |
| November | 42°F (5°C) | 2.8 in | |
| December | 30°F (-1°C) | 2.1 in |
Lewistown has a seasonal temperature swing of 53°F / from 24°F in January to 77°F in July. Total annual precipitation is 37.8 inches, with May being the wettest month (4.5") and February the driest (1.4").