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Weather & Climate in Fort Greely, AK
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Fort Greely has a cool climate with an average annual temperature of 30°F (-1°C). Winters average -1°F in January while summers reach 61°F in July / a wide seasonal temperature swing of 62°F. The area gets 274 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 10.3 inches (drier than the 38-inch national average). Air quality is rated Good with a median AQI of 21 / among the cleanest air in the country. The city sits at an elevation of 1,329 feet.
Temperature
-1°F Jan (-18°C)
61°F Jul (16°C)
| Annual Average | 30.0°F |
| 44% below US avg | |
| January Average | -1°F (-18°C) |
| July Average | 61°F (16°C) |
| Sunny Days | 274 days/yr |
Geography
| Elevation | 1,329 ft (405 m) |
| Area | 160.0 sq mi (414.5 km²) |
| Population Density | 8/sq mi |
| Coordinates | 63.9678°N, 145.7149°W |
| Timezone | America/Anchorage |
| County | Fairbanks North Star Borough County |
| Nearest Airport | Fairbanks International (FAI) 87 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 21.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 88.5 / 100 |
| Social Vulnerability | 10.6 / 100 |
| Community Resilience | 26.0 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Relatively Moderate |
| Wildfire | Relatively Moderate |
| Flood | Relatively Low |
| Hail | Very Low |
| Strong Wind | Very Low |
| Winter Weather | Very High |
| Lightning | Relatively Moderate |
| Ice Storm | Relatively Low |
| Drought | No Rating |
| Cold Wave | Relatively High |
| Landslide | Relatively High |
| Volcano | Very Low |
| Avalanche | Relatively Moderate |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
2,749 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M7.9.
| Nov 3, 2002 | 2002 Denali Fault, Alaska Earthquake | M7.9 | 99 km | 4 km |
| Oct 23, 2002 | 53 km ENE of Cantwell, Alaska | M6.6 | 119 km | 4 km |
| Oct 22, 1996 | 31 km NNE of Paxson, Alaska | M5.7 | 71 km | 4 km |
| Nov 3, 2002 | 23 km NNW of Paxson, Alaska | M5.6 | 75 km | 20 km |
| Nov 3, 2002 | 23 km N of Paxson, Alaska | M5.6 | 74 km | 1 km |
| Nov 3, 2002 | 45 km WNW of Mentasta Lake, Alaska | M5.4 | 116 km | 0 km |
| Nov 3, 2002 | 19 km NNE of Paxson, Alaska | M5.4 | 80 km | 1 km |
| Nov 4, 2002 | 36 km NE of Paxson, Alaska | M5.4 | 79 km | 1 km |
| Jan 19, 2024 | 4 km SW of Salcha, Alaska | M5.3 | 84 km | 11 km |
| Nov 3, 2002 | 32 km SW of Dry Creek, Alaska | M5.2 | 70 km | 5 km |
| Nov 4, 2002 | 41 km ENE of Paxson, Alaska | M5.2 | 99 km | 1 km |
| Nov 4, 2002 | 78 km ESE of McKinley Park, Alaska | M5.1 | 96 km | 5 km |
| Nov 8, 2002 | 36 km ENE of Cantwell, Alaska | M5.1 | 136 km | 6 km |
| Jan 24, 2003 | 31 km NE of Paxson, Alaska | M5.1 | 83 km | 1 km |
| Jul 5, 2002 | 77 km E of Cantwell, Alaska | M5.1 | 98 km | 0 km |
| Nov 4, 2002 | 44 km ENE of Paxson, Alaska | M5.1 | 98 km | 5 km |
| Nov 4, 2002 | 16 km WNW of Mentasta Lake, Alaska | M5.0 | 136 km | 0 km |
| Nov 3, 2002 | 57 km E of Cantwell, Alaska | M5.0 | 116 km | 0 km |
| Nov 5, 2002 | 28 km NE of Paxson, Alaska | M5.0 | 82 km | 11 km |
| Nov 3, 2002 | 27 km SW of Dry Creek, Alaska | M4.9 | 62 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: CAMP CREEK (173,441 acres, 2004).
| Year | Name | Acres Burned | Distance |
| 2004 | CAMP CREEK | 173,441 | 72 km |
| 2013 | STUART CREEK #2 | 87,981 | 100 km |
| 2002 | SPURS | 72,638 | 32 km |
| 2022 | 2022 OKLAHOMA AND STUART CREEK RX | 63,684 | 31 km |
| 1998 | CARLA LAKE | 62,508 | 21 km |
| 2013 | MISSISSIPPI | 59,188 | 18 km |
| 2023 | DELTA | 57,975 | 41 km |
| 2014 | 1 OKLAHOMA RANGE | 53,368 | 29 km |
| 2023 | POGO MINE ROAD | 51,225 | 39 km |
| 2003 | SAND CREEK | 49,787 | 46 km |
| 2011 | EAST VOLKMAR | 48,652 | 52 km |
| 1987 | GRANITE CREEK | 40,844 | 14 km |
| 2009 | OKLAHOMA 2 | 38,398 | 32 km |
| 2015 | BLAIR | 37,977 | 79 km |
| 2007 | LITTLE DELTA | 29,836 | 64 km |
| 2019 | OREGON LAKES | 23,924 | 20 km |
| 1990 | MILITARY 7 | 23,797 | 32 km |
| 2018 | 1X OKLAHOMA RANGE | 22,322 | 31 km |
| 2014 | 100 MILE CREEK | 22,109 | 30 km |
| 1994 | HAJDUKOVICH | 21,139 | 33 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | -1°F (-18°C) | 0.3 in | |
| February | 2°F (-16°C) | 0.4 in | |
| March | 12°F (-11°C) | 0.2 in | Driest |
| April | 29°F (-2°C) | 0.2 in | |
| May | 44°F (7°C) | 0.8 in | |
| June | 55°F (13°C) | 2.5 in | |
| July | 61°F (16°C) | 2.6 in | Warmest, Wettest |
| August | 54°F (12°C) | 2.0 in | |
| September | 43°F (6°C) | 1.0 in | |
| October | 24°F (-4°C) | 0.7 in | |
| November | 5°F (-15°C) | 0.5 in | |
| December | -2°F (-19°C) | 0.4 in | Coldest |
Fort Greely has a seasonal temperature swing of 62°F / from -2°F in December to 61°F in July. Total annual precipitation is 11.5 inches, with July being the wettest month (2.6") and March the driest (0.2").