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Weather & Climate in Green Castle, MO
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Green Castle experiences four distinct seasons with an average annual temperature of 54°F (12°C). Winters average 27°F in January while summers reach 78°F in July. The area gets 268 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 37.6 inches. The area receives 3.9 inches of snow annually. Air quality is rated Good with a median AQI of 41. The city sits at an elevation of 886 feet.
Temperature
27°F Jan (-3°C)
78°F Jul (25°C)
| Annual Average | 53.6°F |
| 1% below US avg | |
| January Average | 27°F (-3°C) |
| July Average | 78°F (25°C) |
| Sunny Days | 268 days/yr |
Geography
| Elevation | 886 ft (270 m) |
| Area | 0.2 sq mi (0.4 km²) |
| Population Density | 736/sq mi |
| Coordinates | 39.3594°N, 94.5714°W |
| Timezone | America/Chicago |
| Nearest Airport | Kansas City International (MCI) 9 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 41.0 |
| Rating | Good |
Earthquake History
7 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.3.
| May 18, 2005 | Missouri | M3.3 | 113 km | 5 km |
| Mar 23, 2007 | 5 km N of Nortonville, Kansas | M3.1 | 67 km | 5 km |
| Feb 11, 1995 | 6 km E of Clearmont, Missouri | M3.1 | 132 km | 5 km |
| May 13, 1999 | 6 km WSW of Kansas City, Kansas | M3.0 | 31 km | 5 km |
| Mar 31, 1993 | 2 km SE of Nemaha, Nebraska | M2.9 | 141 km | 5 km |
| Apr 4, 2015 | 3 km ESE of Clinton, Missouri | M2.6 | 132 km | 2 km |
| Jul 15, 2025 | 3 km W of Hale, Missouri | M2.5 | 105 km | 8 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
575 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 14 fatalities, 349 injuries.
| Date | Rating | Distance | Path | Fatalities |
| May 28, 2019 | EF4 | 90 km | 29.1 mi | 0 |
| May 29, 2004 | EF4 | 64 km | 22.0 mi | 3 |
| May 4, 2003 | EF4 | 16 km | 5.0 mi | 0 |
| May 4, 2003 | EF4 | 39 km | 21.0 mi | 2 |
| May 4, 1977 | EF4 | 49 km | 48.6 mi | 0 |
| May 4, 1977 | EF4 | 28 km | 12.0 mi | 0 |
| Apr 23, 1975 | EF4 | 64 km | 11.4 mi | 1 |
| Jun 8, 1966 | EF4 | 57 km | 19.9 mi | 1 |
| May 7, 1961 | EF4 | 37 km | 26.2 mi | 0 |
| May 22, 1952 | EF4 | 70 km | 26.9 mi | 0 |
| Mar 6, 2017 | EF3 | 53 km | 17.7 mi | 0 |
| May 2, 2008 | EF3 | 10 km | 0.9 mi | 0 |
| May 29, 2004 | EF3 | 29 km | 7.0 mi | 0 |
| Apr 26, 1984 | EF3 | 74 km | 32.0 mi | 0 |
| Jun 19, 1981 | EF3 | 74 km | 7.7 mi | 1 |
| May 4, 1977 | EF3 | 93 km | 31.6 mi | 0 |
| May 4, 1977 | EF3 | 69 km | 26.2 mi | 1 |
| Jun 26, 1969 | EF3 | 21 km | 10.1 mi | 0 |
| May 15, 1968 | EF3 | 81 km | 2.7 mi | 0 |
| Jun 11, 1967 | EF3 | 97 km | 43.9 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
3 wildfires (100+ acres) recorded within 100 km. Largest: HIGHWAY E (897 acres, 2012).
| Year | Name | Acres Burned | Distance |
| 2012 | HIGHWAY E | 897 | 64 km |
| 2009 | UNIT 6 | 625 | 100 km |
| 2002 | SCRDGRS 6 | 536 | 99 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 27°F (-3°C) | 1.1 in | Coldest, Driest |
| February | 32°F (0°C) | 1.2 in | |
| March | 43°F (6°C) | 2.5 in | |
| April | 54°F (12°C) | 3.4 in | |
| May | 64°F (18°C) | 5.0 in | Wettest |
| June | 73°F (23°C) | 4.6 in | |
| July | 78°F (25°C) | 4.1 in | Warmest |
| August | 76°F (24°C) | 3.8 in | |
| September | 68°F (20°C) | 4.8 in | |
| October | 56°F (13°C) | 3.3 in | |
| November | 42°F (6°C) | 2.2 in | |
| December | 31°F (-0°C) | 1.6 in |
Green Castle has a seasonal temperature swing of 51°F / from 27°F in January to 78°F in July. Total annual precipitation is 37.6 inches, with May being the wettest month (5.0") and January the driest (1.1").