All Countries
Weather & Climate in Walnut Grove, MO
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Walnut Grove enjoys a temperate climate with an average annual temperature of 56°F (13°C). Winters average 31°F in January while summers reach 78°F in July. The area gets 257 sunny days per year, above the national average. Annual precipitation totals 43.7 inches. The area receives 4.6 inches of snow annually. Air quality is rated Good with a median AQI of 41. The city sits at an elevation of 1,204 feet.
Temperature
31°F Jan (-1°C)
78°F Jul (26°C)
| Annual Average | 55.7°F |
| 3% above US avg | |
| January Average | 31°F (-1°C) |
| July Average | 78°F (26°C) |
| Sunny Days | 257 days/yr |
Geography
| Elevation | 1,204 ft (367 m) |
| Area | 0.6 sq mi (1.6 km²) |
| Population Density | 913/sq mi |
| Coordinates | 37.4112°N, 93.5496°W |
| Timezone | America/Chicago |
| Nearest Airport | Joplin Regional (JLN) 54 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 41.0 |
| Rating | Good |
Earthquake History
14 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.6.
| Jun 11, 2017 | 6 km NNE of Bergman, Arkansas | M3.6 | 125 km | 6 km |
| May 18, 2005 | Missouri | M3.3 | 122 km | 5 km |
| Mar 30, 2001 | 1 km SW of Hermitage, Missouri | M3.1 | 61 km | 5 km |
| Jan 21, 1992 | 5 km SE of Linn Creek, Missouri | M3.1 | 101 km | 5 km |
| Jun 16, 2017 | 6 km N of Bergman, Arkansas | M2.9 | 125 km | 6 km |
| May 21, 2010 | 2 km SW of Centerton, Arkansas | M2.6 | 136 km | 1 km |
| Apr 4, 2015 | 3 km ESE of Clinton, Missouri | M2.6 | 107 km | 2 km |
| Apr 23, 2025 | 3 km E of Hartville, Missouri | M2.6 | 97 km | 4 km |
| Apr 29, 2018 | 3 km WNW of Evergreen, Missouri | M2.5 | 83 km | 2 km |
| Jun 21, 2017 | 6 km N of Bergman, Arkansas | M2.5 | 125 km | 5 km |
| May 13, 2015 | 8 km E of Lead Hill, Arkansas | M2.5 | 127 km | 0 km |
| Jan 4, 2024 | 13 km E of South Lead Hill, Arkansas | M2.5 | 131 km | 4 km |
| Apr 29, 2010 | 3 km SW of Centerton, Arkansas | M2.5 | 138 km | 0 km |
| May 2, 2001 | 10 km NW of Bakersfield, Missouri | M2.5 | 149 km | 1 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
537 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 37 fatalities, 613 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Nov 29, 1991 | EF4 | 41 km | 10.0 mi | 2 |
| Sep 26, 1959 | EF4 | 78 km | 7.8 mi | 0 |
| May 22, 2019 | EF3 | 62 km | 11.3 mi | 3 |
| Jan 7, 2008 | EF3 | 37 km | 50.4 mi | 3 |
| Mar 12, 2006 | EF3 | 63 km | 32.0 mi | 0 |
| Mar 12, 2006 | EF3 | 50 km | 17.0 mi | 0 |
| Mar 12, 2006 | EF3 | 53 km | 42.0 mi | 1 |
| May 4, 2003 | EF3 | 87 km | 86.0 mi | 5 |
| May 4, 2003 | EF3 | 84 km | 14.0 mi | 4 |
| May 4, 2003 | EF3 | 79 km | 49.0 mi | 7 |
| May 4, 1999 | EF3 | 72 km | 3.0 mi | 0 |
| May 17, 1995 | EF3 | 94 km | 14.0 mi | 0 |
| Apr 29, 1983 | EF3 | 25 km | 5.5 mi | 1 |
| Mar 15, 1982 | EF3 | 74 km | 14.0 mi | 0 |
| Mar 15, 1982 | EF3 | 98 km | 9.0 mi | 0 |
| Mar 26, 1976 | EF3 | 70 km | 29.1 mi | 1 |
| Apr 20, 1973 | EF3 | 28 km | 1.0 mi | 0 |
| Apr 20, 1973 | EF3 | 37 km | 7.8 mi | 0 |
| May 5, 1971 | EF3 | 98 km | 13.1 mi | 1 |
| Nov 17, 1958 | EF3 | 93 km | 30.2 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: UNNAMED (7,388 acres, 1994).
| Year | Name | Acres Burned | Distance |
| 1994 | UNNAMED | 7,388 | 78 km |
| 1994 | UNNAMED | 5,344 | 77 km |
| 2006 | BIG SPRING FIRE | 4,921 | 76 km |
| 2010 | UNNAMED | 4,767 | 80 km |
| 2009 | MOUNTAIN CREEK | 4,322 | 79 km |
| 1991 | UNNAMED | 4,179 | 72 km |
| 1992 | UNNAMED | 3,538 | 80 km |
| 1991 | UNNAMED | 3,533 | 75 km |
| 1991 | UNNAMED | 3,492 | 70 km |
| 1994 | UNNAMED | 3,336 | 86 km |
| 1991 | UNNAMED | 3,135 | 74 km |
| 2012 | KINFOLK RD | 2,883 | 78 km |
| 1991 | UNNAMED | 2,763 | 85 km |
| 2007 | UNNAMED | 2,710 | 76 km |
| 2005 | UNNAMED | 2,590 | 79 km |
| 2006 | UNNAMED | 2,575 | 80 km |
| 1991 | UNNAMED | 2,569 | 80 km |
| 2002 | UNNAMED | 2,418 | 84 km |
| 1991 | UNNAMED | 2,369 | 86 km |
| 2019 | SWAN CREEK | 2,365 | 80 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 31°F (-1°C) | 1.8 in | Coldest, Driest |
| February | 36°F (2°C) | 2.1 in | |
| March | 46°F (8°C) | 3.7 in | |
| April | 55°F (13°C) | 4.2 in | |
| May | 64°F (18°C) | 4.8 in | |
| June | 73°F (23°C) | 5.0 in | Wettest |
| July | 78°F (26°C) | 3.4 in | Warmest |
| August | 77°F (25°C) | 3.6 in | |
| September | 69°F (21°C) | 4.7 in | |
| October | 58°F (14°C) | 3.9 in | |
| November | 46°F (8°C) | 3.8 in | |
| December | 36°F (2°C) | 2.8 in |
Walnut Grove has a seasonal temperature swing of 48°F / from 31°F in January to 78°F in July. Total annual precipitation is 43.7 inches, with June being the wettest month (5.0") and January the driest (1.8").