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Weather & Climate in Walnut, KS
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Walnut enjoys a temperate climate with an average annual temperature of 56°F (13°C). Winters average 32°F in January while summers reach 79°F in July. The area gets 305 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 44.7 inches. The area receives 9.7 inches of snow annually. Air quality is rated Good with a median AQI of 39. The city sits at an elevation of 935 feet.
Temperature
32°F Jan (-0°C)
79°F Jul (26°C)
| Annual Average | 55.9°F |
| 4% above US avg | |
| January Average | 32°F (-0°C) |
| July Average | 79°F (26°C) |
| Sunny Days | 305 days/yr |
Geography
| Elevation | 935 ft (285 m) |
| Area | 1.0 sq mi (2.6 km²) |
| Population Density | 156/sq mi |
| Coordinates | 37.6036°N, 95.0741°W |
| Timezone | America/Chicago |
| County | Neosho County County |
| Nearest Airport | Joplin Regional (JLN) 42 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 39.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 32.5 / 100 |
| Social Vulnerability | 22.6 / 100 |
| Community Resilience | 58.7 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Very Low |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Relatively Low |
| Hail | Relatively Low |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Moderate |
| Lightning | Relatively Low |
| Ice Storm | Relatively Moderate |
| Drought | Relatively Moderate |
| Cold Wave | Relatively Low |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
4 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.3.
| May 18, 2005 | Missouri | M3.3 | 136 km | 5 km |
| Mar 23, 2024 | 9 km SE of Foyil, Oklahoma | M2.8 | 141 km | 5 km |
| Jan 14, 2016 | 7 km W of Talala, Oklahoma | M2.7 | 135 km | 5 km |
| Apr 4, 2015 | 3 km ESE of Clinton, Missouri | M2.6 | 144 km | 2 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
510 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF5. Total: 213 fatalities, 1,954 injuries.
| Date | Rating | Distance | Path | Fatalities |
| May 22, 2011 | EF5 | 75 km | 21.6 mi | 158 |
| May 10, 2008 | EF4 | 67 km | 75.5 mi | 21 |
| Feb 28, 2007 | EF4 | 59 km | 28.0 mi | 0 |
| May 4, 2003 | EF4 | 21 km | 33.0 mi | 4 |
| Apr 24, 1975 | EF4 | 97 km | 11.9 mi | 3 |
| Apr 12, 1964 | EF4 | 61 km | 19.4 mi | 3 |
| Sep 27, 1959 | EF4 | 85 km | 20.4 mi | 1 |
| Apr 3, 1956 | EF4 | 93 km | 41.8 mi | 0 |
| May 22, 2019 | EF3 | 68 km | 9.2 mi | 0 |
| May 22, 2019 | EF3 | 81 km | 11.3 mi | 3 |
| Apr 21, 2005 | EF3 | 32 km | 5.0 mi | 0 |
| May 8, 2003 | EF3 | 80 km | 23.0 mi | 0 |
| May 4, 2003 | EF3 | 59 km | 25.0 mi | 5 |
| May 4, 2003 | EF3 | 49 km | 86.0 mi | 5 |
| Apr 19, 2000 | EF3 | 60 km | 34.0 mi | 0 |
| May 17, 1995 | EF3 | 59 km | 14.0 mi | 0 |
| Apr 26, 1991 | EF3 | 90 km | 15.0 mi | 0 |
| Mar 26, 1983 | EF3 | 38 km | 7.0 mi | 0 |
| Mar 15, 1982 | EF3 | 49 km | 9.0 mi | 0 |
| Mar 15, 1982 | EF3 | 94 km | 6.0 mi | 1 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: UNNAMED (20,760 acres, 2014).
| Year | Name | Acres Burned | Distance |
| 2014 | UNNAMED | 20,760 | 81 km |
| 1996 | UNNAMED | 14,661 | 98 km |
| 2018 | 18-85 | 14,632 | 86 km |
| 1996 | UNNAMED | 13,265 | 84 km |
| 2002 | UNNAMED | 8,678 | 89 km |
| 2004 | UNNAMED | 6,373 | 93 km |
| 2004 | UNNAMED | 4,424 | 81 km |
| 1995 | UNNAMED | 3,676 | 97 km |
| 1986 | UNNAMED | 3,427 | 86 km |
| 1991 | UNNAMED | 2,043 | 28 km |
| 1994 | UNNAMED | 1,952 | 93 km |
| 1990 | UNNAMED | 1,823 | 70 km |
| 2015 | VOLZ FIRE | 1,662 | 70 km |
| 2005 | NR STEELE | 1,652 | 79 km |
| 1988 | UNNAMED | 1,539 | 19 km |
| 2016 | 04-02-1 | 1,357 | 95 km |
| 2010 | NO TORCH | 1,356 | 98 km |
| 1996 | UNNAMED | 1,346 | 88 km |
| 1989 | UNNAMED | 1,127 | 90 km |
| 2006 | GRAND | 1,067 | 18 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 32°F (-0°C) | 1.4 in | Coldest, Driest |
| February | 37°F (3°C) | 1.7 in | |
| March | 47°F (8°C) | 3.4 in | |
| April | 57°F (14°C) | 3.7 in | |
| May | 66°F (19°C) | 5.2 in | |
| June | 74°F (24°C) | 5.4 in | Wettest |
| July | 79°F (26°C) | 3.4 in | Warmest |
| August | 78°F (26°C) | 4.0 in | |
| September | 70°F (21°C) | 4.7 in | |
| October | 59°F (15°C) | 4.1 in | |
| November | 46°F (8°C) | 2.9 in | |
| December | 35°F (2°C) | 1.8 in |
Walnut has a seasonal temperature swing of 47°F / from 32°F in January to 79°F in July. Total annual precipitation is 41.7 inches, with June being the wettest month (5.4") and January the driest (1.4").