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Weather & Climate in Hartwell, MO

Temperature, precipitation, air quality, natural hazards, and monthly weather data.

Hartwell experiences four distinct seasons with an average annual temperature of 55°F (13°C). Winters average 28°F in January while summers reach 78°F in July. The area gets 262 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 41.1 inches. The area receives 5.2 inches of snow annually. Air quality is rated Good with a median AQI of 41. The city sits at an elevation of 768 feet.

Temperature

28°F Jan (-2°C) 78°F Jul (26°C)
Annual Average54.8°F
1% above US avg
January Average28°F (-2°C)
July Average78°F (26°C)
Sunny Days262 days/yr

Geography

Elevation768 ft (234 m)
Area0.5 sq mi (1.2 km²)
Population Density42/sq mi
Coordinates38.4353°N, 93.9347°W
TimezoneAmerica/Chicago
Nearest AirportSedalia Regional (DMO)
45 miles away

Precipitation & Snow

Annual Rainfall 41.1"
8% above US avg
Snowfall 5.2"
Wettest Month (Jun) 5.00"
Driest Month (Jan) 1.46"

Air Quality

AQI Median41.0
RatingGood

Earthquake History

7 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.3.

May 18, 2005 Missouri M3.3 4 km 5 km
Jul 31, 2005 Missouri M3.3 110 km 5 km
Mar 30, 2001 1 km SW of Hermitage, Missouri M3.1 77 km 5 km
Jan 21, 1992 5 km SE of Linn Creek, Missouri M3.1 121 km 5 km
May 13, 1999 6 km WSW of Kansas City, Kansas M3.0 99 km 5 km
Apr 4, 2015 3 km ESE of Clinton, Missouri M2.6 19 km 2 km
Jul 15, 2025 3 km W of Hale, Missouri M2.5 138 km 8 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.

Tornado History

452 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 12 fatalities, 287 injuries.

Date Rating Distance Path Fatalities
May 4, 1977 EF4 93 km 12.0 mi 0
May 4, 1977 EF4 99 km 48.6 mi 0
Apr 19, 1973 EF4 37 km 10.0 mi 0
Mar 6, 2017 EF3 64 km 17.7 mi 0
Mar 12, 2006 EF3 93 km 35.0 mi 0
Mar 12, 2006 EF3 79 km 17.0 mi 0
May 4, 1999 EF3 51 km 3.0 mi 0
May 17, 1995 EF3 82 km 14.0 mi 0
Mar 15, 1982 EF3 50 km 14.0 mi 0
May 12, 1980 EF3 52 km 15.8 mi 0
May 4, 1977 EF3 54 km 29.8 mi 2
May 4, 1977 EF3 63 km 26.2 mi 1
May 4, 1977 EF3 51 km 11.2 mi 0
Apr 20, 1973 EF3 47 km 5.0 mi 0
Apr 20, 1973 EF3 59 km 19.4 mi 0
Apr 20, 1973 EF3 41 km 10.1 mi 0
Apr 20, 1973 EF3 97 km 1.0 mi 0
May 15, 1968 EF3 66 km 2.7 mi 0
Jan 24, 1967 EF3 79 km 14.5 mi 2
Apr 19, 1966 EF3 93 km 7.7 mi 0
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: UNNAMED (2,763 acres, 1991).

Year Name Acres Burned Distance
1991 UNNAMED 2,763 73 km
2006 UNNAMED 2,089 14 km
1991 UNNAMED 2,023 76 km
1991 UNNAMED 1,840 68 km
2005 NR STEELE 1,652 65 km
1996 UNNAMED 1,356 67 km
1996 UNNAMED 1,346 93 km
1996 UNNAMED 1,305 43 km
1991 UNNAMED 1,294 78 km
2006 UNNAMED 1,282 55 km
1991 UNNAMED 1,273 81 km
1994 UNNAMED 1,045 70 km
2005 UNNAMED 940 63 km
1991 UNNAMED 938 63 km
1994 UNNAMED 869 80 km
1994 UNNAMED 864 75 km
2005 UNNAMED 860 59 km
1994 UNNAMED 849 79 km
2006 UNNAMED 840 63 km
2000 UNNAMED 802 59 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).

Monthly Weather

Month Avg Temperature Precipitation Summary
January 28°F (-2°C) 1.5 in Coldest, Driest
February 34°F (1°C) 1.7 in
March 45°F (7°C) 3.1 in
April 55°F (13°C) 4.0 in
May 64°F (18°C) 5.0 in
June 73°F (23°C) 5.0 in Wettest
July 78°F (26°C) 3.7 in Warmest
August 77°F (25°C) 3.8 in
September 69°F (20°C) 4.5 in
October 57°F (14°C) 3.8 in
November 44°F (7°C) 3.1 in
December 33°F (1°C) 2.1 in

Hartwell has a seasonal temperature swing of 51°F / from 28°F in January to 78°F in July. Total annual precipitation is 41.1 inches, with June being the wettest month (5.0") and January the driest (1.5").

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