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Weather & Climate in Fort Yukon, AK
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Fort Yukon has a cool climate with an average annual temperature of 23°F (-5°C). Winters average -16°F in January while summers reach 61°F in July / a wide seasonal temperature swing of 77°F. The area gets 200 sunny days per year. 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 439 feet.
Temperature
-16°F Jan (-27°C)
61°F Jul (16°C)
| Annual Average | 23.0°F |
| 57% below US avg | |
| January Average | -16°F (-27°C) |
| July Average | 61°F (16°C) |
| Sunny Days | 200 days/yr |
Geography
| Elevation | 439 ft (134 m) |
| Area | 0.2 sq mi (0.6 km²) |
| Population Density | 87/sq mi |
| Coordinates | 66.5884°N, 145.2276°W |
| Timezone | America/Anchorage |
| County | Fairbanks North Star Borough County |
| Nearest Airport | Fairbanks International (FAI) 143 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
528 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.4.
| Feb 5, 2006 | 61 km SE of Chalkyitsik, Alaska | M5.4 | 118 km | 9 km |
| Feb 7, 1991 | 24 km W of Beaver, Alaska | M5.1 | 123 km | 10 km |
| Feb 5, 2006 | 64 km SE of Chalkyitsik, Alaska | M5.1 | 123 km | 2 km |
| Jan 5, 1994 | 80 km SW of Arctic Village, Alaska | M4.9 | 147 km | 12 km |
| Jun 11, 2023 | 14 km E of Central, Alaska | M4.8 | 118 km | 15 km |
| Aug 25, 1996 | 88 km ENE of Venetie, Alaska | M4.7 | 94 km | 42 km |
| Aug 21, 1993 | 52 km NNE of Venetie, Alaska | M4.7 | 106 km | 9 km |
| Mar 30, 1994 | 30 km WNW of Beaver, Alaska | M4.6 | 125 km | 20 km |
| Apr 3, 2015 | 64 km S of Arctic Village, Alaska | M4.6 | 109 km | 11 km |
| Dec 5, 2009 | 58 km ENE of Chalkyitsik, Alaska | M4.5 | 124 km | 12 km |
| May 17, 2008 | 79 km ESE of Chalkyitsik, Alaska | M4.5 | 144 km | 20 km |
| May 5, 1997 | 69 km ESE of Chalkyitsik, Alaska | M4.4 | 130 km | 23 km |
| Dec 12, 1990 | 41 km SW of Beaver, Alaska | M4.4 | 138 km | 9 km |
| May 11, 2018 | 45 km N of Venetie, Alaska | M4.4 | 105 km | 8 km |
| Jul 29, 2002 | 45 km S of Beaver, Alaska | M4.3 | 117 km | 13 km |
| Jan 30, 1998 | 32 km S of Circle, Alaska | M4.3 | 130 km | 10 km |
| Jun 10, 2007 | 76 km SE of Chalkyitsik, Alaska | M4.3 | 134 km | 16 km |
| Feb 1, 2013 | 16 km ESE of Central, Alaska | M4.3 | 123 km | 14 km |
| Feb 18, 2006 | 76 km SE of Chalkyitsik, Alaska | M4.3 | 135 km | 16 km |
| Mar 29, 2006 | 74 km SE of Chalkyitsik, Alaska | M4.2 | 132 km | 18 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: CHALKYITSIK COMPLEX (470,507 acres, 2019).
| Year | Name | Acres Burned | Distance |
| 2019 | CHALKYITSIK COMPLEX | 470,507 | 90 km |
| 2004 | PINGO | 353,548 | 85 km |
| 2009 | CRAZY MOUNTAIN COMPLEX (LITTLE BLACK ONE) | 346,582 | 93 km |
| 1990 | 032018 | 333,571 | 96 km |
| 2004 | WINTER TRAIL | 295,961 | 53 km |
| 1988 | 832604 | 294,208 | 71 km |
| 2004 | PREACHER CREEK | 212,441 | 63 km |
| 2003 | HADWEENZIC | 177,669 | 99 km |
| 2009 | BIG CREEK | 175,022 | 86 km |
| 2009 | ROCK SLOUGH | 138,111 | 84 km |
| 1988 | FYU NE 50 | 132,518 | 82 km |
| 1990 | 032042 | 123,334 | 87 km |
| 2005 | SHEENJEK RIVER | 117,276 | 30 km |
| 2004 | LOWER MOUTH | 86,397 | 37 km |
| 1991 | 132460 | 83,354 | 94 km |
| 1985 | 531047 | 79,003 | 77 km |
| 1988 | 832043 | 77,975 | 44 km |
| 2005 | PREACHER CREEK | 69,376 | 98 km |
| 2019 | HADWEENZIC RIVER | 57,466 | 54 km |
| 2009 | SHEENJEK | 56,294 | 83 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | -16°F (-27°C) | 0.4 in | Coldest |
| February | -11°F (-24°C) | 0.4 in | |
| March | 1°F (-17°C) | 0.4 in | |
| April | 23°F (-5°C) | 0.2 in | Driest |
| May | 44°F (7°C) | 0.3 in | |
| June | 58°F (14°C) | 0.7 in | |
| July | 61°F (16°C) | 0.9 in | Warmest |
| August | 54°F (12°C) | 1.1 in | Wettest |
| September | 42°F (5°C) | 0.8 in | |
| October | 20°F (-6°C) | 0.6 in | |
| November | -4°F (-20°C) | 0.4 in | |
| December | -12°F (-24°C) | 0.4 in |
Fort Yukon has a seasonal temperature swing of 77°F / from -16°F in January to 61°F in July. Total annual precipitation is 6.5 inches, with August being the wettest month (1.1") and April the driest (0.2").