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Weather & Climate in LaGrange, WY
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
LaGrange experiences four distinct seasons with an average annual temperature of 50°F (10°C). Winters average 31°F in January while summers reach 73°F in July. The area gets 316 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 16.0 inches (drier than the 38-inch national average). The area receives 53.4 inches of snow annually, making winter weather a significant factor for residents. Air quality is rated Good with a median AQI of 34. The city sits at an elevation of 4,584 feet.
Temperature
31°F Jan (-1°C)
73°F Jul (23°C)
| Annual Average | 50.0°F |
| 7% below US avg | |
| January Average | 31°F (-1°C) |
| July Average | 73°F (23°C) |
| Sunny Days | 316 days/yr |
Geography
| Elevation | 4,584 ft (1,397 m) |
| Area | 0.4 sq mi (1.1 km²) |
| Population Density | 944/sq mi |
| Coordinates | 41.6386°N, 104.1630°W |
| Timezone | America/Denver |
| County | Laramie County County |
| Nearest Airport | Western Nebraska Regional/William B Heilig Field (BFF) 33 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 34.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 76.7 / 100 |
| Social Vulnerability | 22.0 / 100 |
| Community Resilience | 49.0 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Earthquake | Relatively Low |
| Wildfire | Relatively Moderate |
| Flood | Relatively Low |
| Hail | Relatively Moderate |
| Strong Wind | Relatively Moderate |
| Heat Wave | Very Low |
| Winter Weather | Very High |
| Lightning | Relatively High |
| Ice Storm | Relatively High |
| Drought | Very Low |
| Cold Wave | Relatively High |
| Landslide | Very Low |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
14 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.2.
| Dec 13, 1993 | 14 km SW of Esterbrook, Wyoming | M3.2 | 135 km | 5 km |
| Jun 1, 2014 | 9 km NNW of Kersey, Colorado | M3.2 | 136 km | 1 km |
| Jun 18, 1998 | 23 km S of Chadron, Nebraska | M3.1 | 145 km | 5 km |
| Jan 6, 2018 | 7 km SW of Guernsey, Wyoming | M3.0 | 84 km | 5 km |
| Nov 2, 1992 | 5 km ESE of Lusk, Wyoming | M3.0 | 124 km | 5 km |
| Sep 7, 2019 | 23 km WSW of Esterbrook, Wyoming | M2.9 | 140 km | 5 km |
| Mar 30, 2019 | 7 km NE of Greeley, Colorado | M2.9 | 136 km | 6 km |
| Mar 10, 2011 | 22 km N of Van Tassell, Wyoming | M2.9 | 136 km | 5 km |
| Dec 19, 2013 | 33 km NE of Rock River, Wyoming | M2.8 | 129 km | 12 km |
| Apr 24, 2007 | 23 km WSW of Hay Springs, Nebraska | M2.7 | 146 km | 5 km |
| May 28, 2025 | 9 km ENE of Glendo, Wyoming | M2.6 | 118 km | 5 km |
| Aug 23, 2016 | 2 km SSE of Eaton, Colorado | M2.6 | 134 km | 10 km |
| Feb 27, 2021 | 13 km WNW of Crawford, Nebraska | M2.6 | 129 km | 5 km |
| Jun 23, 2014 | 6 km NNE of Kersey, Colorado | M2.5 | 137 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
474 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 3 fatalities, 97 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Jun 27, 1955 | EF4 | 44 km | 26.0 mi | 2 |
| Jun 9, 1991 | EF3 | 56 km | 3.5 mi | 0 |
| May 27, 1985 | EF3 | 44 km | 48.0 mi | 0 |
| Jul 16, 1979 | EF3 | 76 km | 8.8 mi | 1 |
| Jul 20, 1978 | EF3 | 61 km | 53.2 mi | 0 |
| Jun 20, 1960 | EF3 | 71 km | 26.1 mi | 0 |
| Jun 27, 1955 | EF3 | 76 km | 2.0 mi | 0 |
| Jun 26, 1955 | EF3 | 39 km | 2.0 mi | 0 |
| Jun 23, 2023 | EF2 | 49 km | 2.5 mi | 0 |
| Jun 23, 2023 | EF2 | 17 km | 4.7 mi | 0 |
| Sep 10, 2019 | EF2 | 83 km | 19.1 mi | 0 |
| May 27, 2018 | EF2 | 89 km | 1.0 mi | 0 |
| Jun 12, 2017 | EF2 | 83 km | 15.0 mi | 0 |
| Jun 12, 2017 | EF2 | 71 km | 25.6 mi | 0 |
| Jun 12, 2017 | EF2 | 71 km | 31.7 mi | 0 |
| Jun 7, 2012 | EF2 | 91 km | 20.6 mi | 0 |
| May 18, 2010 | EF2 | 54 km | 1.5 mi | 0 |
| Jun 5, 2009 | EF2 | 18 km | 8.3 mi | 0 |
| Jun 27, 2005 | EF2 | 49 km | 17.0 mi | 0 |
| May 21, 1998 | EF2 | 36 km | 4.0 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: PLEASANT VALLEY (28,249 acres, 2024).
| Year | Name | Acres Burned | Distance |
| 2024 | PLEASANT VALLEY | 28,249 | 84 km |
| 2006 | OLD CHICAGO | 25,218 | 97 km |
| 2016 | SIMMONS | 20,950 | 73 km |
| 2022 | CARTER CANYON | 15,828 | 33 km |
| 2011 | SQUAW MTN | 14,379 | 94 km |
| 1996 | UNNAMED | 14,279 | 79 km |
| 2000 | CO LINE | 10,961 | 30 km |
| 2006 | TRAILER | 8,040 | 89 km |
| 2024 | SCHIFF | 6,714 | 88 km |
| 2024 | HAPPY JACK | 6,585 | 85 km |
| 2021 | HACKBERRY CA | 6,367 | 68 km |
| 1996 | SPRING CR. | 4,682 | 98 km |
| 1994 | SQUAW MTN. | 4,093 | 94 km |
| 1988 | UNNAMED | 4,047 | 69 km |
| 2022 | SMOKEY | 3,961 | 55 km |
| 2021 | 313 | 3,859 | 29 km |
| 2001 | UNNAMED | 3,586 | 68 km |
| 2020 | HUBBARDS GAP | 3,435 | 59 km |
| 2005 | BROADCAST BURN | 3,230 | 83 km |
| 2004 | ROSETTA LANE | 3,164 | 82 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 31°F (-1°C) | 0.5 in | |
| February | 30°F (-1°C) | 0.5 in | Driest |
| March | 37°F (3°C) | 1.3 in | |
| April | 45°F (7°C) | 1.9 in | |
| May | 55°F (13°C) | 2.9 in | Wettest |
| June | 65°F (18°C) | 2.4 in | |
| July | 73°F (23°C) | 2.1 in | Warmest |
| August | 70°F (21°C) | 1.4 in | |
| September | 60°F (16°C) | 1.2 in | |
| October | 48°F (9°C) | 0.9 in | |
| November | 35°F (2°C) | 0.7 in | |
| December | 28°F (-2°C) | 0.6 in | Coldest |
LaGrange has a seasonal temperature swing of 46°F / from 28°F in December to 73°F in July. Total annual precipitation is 16.3 inches, with May being the wettest month (2.9") and February the driest (0.5").