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Weather & Climate in Kasigluk, AK
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Kasigluk has a cool climate with an average annual temperature of 31°F (-0°C). Winters average 7°F in January while summers reach 56°F in July. 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 19.7 inches (drier than the 38-inch national average). The area receives 64.0 inches of snow annually, making winter weather a significant factor for residents. 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 37 feet.
Temperature
7°F Jan (-14°C)
56°F Jul (14°C)
| Annual Average | 31.4°F |
| 42% below US avg | |
| January Average | 7°F (-14°C) |
| July Average | 56°F (14°C) |
| Sunny Days | 274 days/yr |
Geography
| Elevation | 37 ft (11 m) |
| Area | 13.1 sq mi (34.0 km²) |
| Population Density | 59/sq mi |
| Coordinates | 60.8638°N, 162.5366°W |
| Timezone | America/Anchorage |
| County | Bethel Census Area County |
| Nearest Airport | Ted Stevens Anchorage International (ANC) 420 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 21.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 44.3 / 100 |
| Social Vulnerability | 100.0 / 100 |
| Community Resilience | 39.1 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Very Low |
| Wildfire | Relatively Low |
| Flood | Very Low |
| Hail | Very Low |
| Strong Wind | Very Low |
| Winter Weather | Relatively High |
| Lightning | Relatively Low |
| Ice Storm | Very Low |
| Drought | No Rating |
| Cold Wave | Relatively High |
| Landslide | Very Low |
| Coastal Flood | No Rating |
| Tsunami | Very Low |
| Volcano | Very Low |
| Avalanche | Relatively Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
8 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.4.
| Feb 23, 2013 | 19 km NNW of Eek, Alaska | M4.4 | 57 km | 10 km |
| Apr 3, 2018 | 25 km SSE of Eek, Alaska | M3.6 | 103 km | 24 km |
| Jun 1, 2010 | 9 km SE of Tuluksak, Alaska | M3.5 | 92 km | 28 km |
| Aug 31, 2021 | 5 km S of Lower Kalskag, Alaska | M3.5 | 135 km | 13 km |
| Mar 11, 2013 | 18 km NNW of Eek, Alaska | M3.4 | 58 km | 23 km |
| Apr 22, 2009 | 3 km SE of Kalskag, Alaska | M3.4 | 142 km | 3 km |
| Jun 17, 2019 | 18 km S of Willow Creek, Alaska | M2.6 | 93 km | 9 km |
| Jul 22, 2020 | 13 km ENE of Tuluksak, Alaska | M2.5 | 102 km | 18 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
2 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF0.
| Date | Rating | Distance | Path | Fatalities |
| Jun 18, 2004 | EF0 | 54 km | — | 0 |
| Jun 14, 2004 | EF0 | 46 km | — | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
17 wildfires (100+ acres) recorded within 100 km. Largest: KUKA CREEK 4 (70,232 acres, 2015).
| Year | Name | Acres Burned | Distance |
| 2015 | KUKA CREEK 4 | 70,232 | 48 km |
| 2020 | INGAKSLUGWAT HILLS | 69,482 | 100 km |
| 2015 | FOG RIVER | 39,019 | 96 km |
| 2015 | KWETHLUK RIVER 2 | 23,912 | 74 km |
| 2015 | IZAVLKNEK RIVER | 23,341 | 58 km |
| 2002 | AROPUK | 19,915 | 76 km |
| 2015 | PUK PALIK LAKE | 15,890 | 45 km |
| 2022 | KWETHLUK | 10,593 | 94 km |
| 2010 | HAWK RIVER | 5,712 | 93 km |
| 2019 | LITTLE KASIGLUK | 4,321 | 99 km |
| 2006 | TAKSLESLUK NORTH | 4,025 | 36 km |
| 2020 | IZAVIKNEK RIVER | 3,728 | 67 km |
| 2007 | NOYUK | 3,003 | 61 km |
| 2007 | KUKA | 2,488 | 60 km |
| 2016 | AROPUK LAKE | 2,266 | 59 km |
| 2020 | KGUN LAKE | 1,691 | 90 km |
| 2016 | GWEEK RIVER | 1,380 | 69 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 7°F (-14°C) | 0.8 in | Coldest |
| February | 11°F (-12°C) | 0.7 in | |
| March | 15°F (-9°C) | 0.7 in | |
| April | 25°F (-4°C) | 0.6 in | Driest |
| May | 39°F (4°C) | 1.0 in | |
| June | 51°F (11°C) | 1.7 in | |
| July | 56°F (14°C) | 2.4 in | Warmest |
| August | 54°F (12°C) | 3.9 in | Wettest |
| September | 47°F (8°C) | 2.9 in | |
| October | 33°F (0°C) | 1.8 in | |
| November | 21°F (-6°C) | 1.6 in | |
| December | 12°F (-11°C) | 1.3 in |
Kasigluk has a seasonal temperature swing of 49°F / from 7°F in January to 56°F in July. Total annual precipitation is 19.3 inches, with August being the wettest month (3.9") and April the driest (0.6").