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Weather & Climate in Clam Gulch, AK
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Clam Gulch has a cool climate with an average annual temperature of 34°F (1°C). Winters average 13°F in January while summers reach 55°F in July. The area gets 269 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 21.6 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 278 feet.
Temperature
13°F Jan (-11°C)
55°F Jul (13°C)
| Annual Average | 34.2°F |
| 37% below US avg | |
| January Average | 13°F (-11°C) |
| July Average | 55°F (13°C) |
| Sunny Days | 269 days/yr |
Geography
| Elevation | 278 ft (85 m) |
| Area | 13.3 sq mi (34.6 km²) |
| Population Density | 22/sq mi |
| Coordinates | 60.2089°N, 151.4042°W |
| Timezone | America/Anchorage |
| County | Kenai Peninsula Borough County |
| Nearest Airport | Ted Stevens Anchorage International (ANC) 82 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 21.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 93.0 / 100 |
| Social Vulnerability | 47.1 / 100 |
| Community Resilience | 6.5 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Relatively High |
| Wildfire | Relatively Moderate |
| Flood | Relatively Low |
| Hail | Very Low |
| Strong Wind | No Rating |
| Winter Weather | Relatively High |
| Lightning | Very Low |
| Ice Storm | Very Low |
| Drought | Very Low |
| Cold Wave | Very Low |
| Landslide | Relatively Moderate |
| Coastal Flood | Very Low |
| Tsunami | Relatively Moderate |
| Volcano | Relatively Low |
| Avalanche | Very High |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
10,563 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M7.1.
| Jan 24, 2016 | 47 km ESE of Pedro Bay, Alaska | M7.1 | 126 km | 126 km |
| Jul 29, 2015 | 52 km ENE of Pedro Bay, Alaska | M6.4 | 106 km | 119 km |
| Jul 9, 1998 | 73 km WNW of Ninilchik, Alaska | M6.1 | 80 km | 131 km |
| Nov 20, 1993 | 66 km ENE of Pedro Bay, Alaska | M5.9 | 92 km | 121 km |
| Jan 24, 2009 | Southern Alaska | M5.9 | 120 km | 98 km |
| Dec 4, 2012 | 20 km ENE of Beluga, Alaska | M5.8 | 120 km | 64 km |
| May 10, 2014 | 23 km WNW of Happy Valley, Alaska | M5.8 | 46 km | 89 km |
| May 5, 1999 | 30 km ESE of Port Graham, Alaska | M5.7 | 109 km | 73 km |
| Mar 2, 2017 | 48 km WNW of Nanwalek, Alaska | M5.6 | 99 km | 78 km |
| Feb 12, 1995 | 67 km SE of Pedro Bay, Alaska | M5.6 | 129 km | 110 km |
| Jan 25, 2001 | 39 km WNW of Ninilchik, Alaska | M5.5 | 53 km | 83 km |
| Aug 13, 1990 | 13 km NW of Happy Valley, Alaska | M5.5 | 35 km | 72 km |
| May 24, 1995 | 26 km SSW of Anchorage, Alaska | M5.5 | 113 km | 39 km |
| Feb 10, 2004 | 6 km WNW of Nanwalek, Alaska | M5.5 | 99 km | 66 km |
| May 12, 1992 | 37 km ESE of Pedro Bay, Alaska | M5.5 | 128 km | 139 km |
| Oct 17, 1996 | 70 km WNW of Happy Valley, Alaska | M5.4 | 86 km | 117 km |
| May 19, 2005 | 54 km W of Happy Valley, Alaska | M5.4 | 75 km | 96 km |
| Apr 25, 1994 | 19 km NE of Nikiski, Alaska | M5.4 | 70 km | 49 km |
| Mar 19, 2023 | 19 km SSW of Anchor Point, Alaska | M5.4 | 72 km | 65 km |
| Mar 9, 1990 | 44 km NW of Ninilchik, Alaska | M5.3 | 50 km | 85 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tsunami History
4 tsunamis recorded within 500 km. Highest wave on record: 60.0 m (197 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1967 | GREWINGK, AK | Meteorological | 60.0 m | — | 68 km |
| 2024 | PEDERSEN LAGOON, AK | Meteorological | 17.0 m | — | 94 km |
| 1883 | COOK INLET, AK | Explosion | 9.1 m | 8 | 143 km |
| 2022 | RESURRECTION BAY, AK | Meteorological | 0.1 m | — | 109 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
3 volcanoes within 200 km. Closest: Iliamna (95 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Iliamna | Stratovolcano | 3,053 m (10,016 ft) | 1876 | 95 km |
| Spurr | Stratovolcano | 3,374 m (11,070 ft) | 1992 | 130 km |
| Augustine | Lava dome(s) | 1,252 m (4,108 ft) | 2006 | 147 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Wildfire History
15 wildfires (100+ acres) recorded within 100 km. Largest: FUNNY RIVER (193,798 acres, 2014).
| Year | Name | Acres Burned | Distance |
| 2014 | FUNNY RIVER | 193,798 | 34 km |
| 2019 | SWAN LAKE | 164,801 | 78 km |
| 2007 | CARIBOU HILLS | 46,686 | 24 km |
| 2005 | FOX CREEK WFU | 25,577 | 24 km |
| 2009 | SHANTA CREEK | 14,474 | 38 km |
| 2005 | KING COUNTY CREEK | 10,124 | 53 km |
| 1991 | POTHOLE | 8,769 | 79 km |
| 2015 | CARD STREET | 7,366 | 57 km |
| 2005 | TRACY AVE | 5,416 | 51 km |
| 2004 | GLACIER CREEK | 5,230 | 44 km |
| 1994 | WINDY POINT | 2,689 | 34 km |
| 1987 | SKILAK 2 | 2,365 | 63 km |
| 2007 | SWAN LAKE | 1,986 | 57 km |
| 2017 | EAST FORK | 1,104 | 66 km |
| 2005 | IRISH CHANNEL | 1,067 | 72 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 13°F (-11°C) | 2.6 in | Coldest |
| February | 19°F (-7°C) | 2.0 in | |
| March | 26°F (-4°C) | 1.8 in | |
| April | 35°F (2°C) | 1.2 in | Driest |
| May | 44°F (7°C) | 1.3 in | |
| June | 51°F (10°C) | 1.3 in | |
| July | 55°F (13°C) | 1.8 in | Warmest |
| August | 54°F (12°C) | 2.8 in | |
| September | 48°F (9°C) | 4.1 in | Wettest |
| October | 37°F (3°C) | 3.6 in | |
| November | 25°F (-4°C) | 2.7 in | |
| December | 18°F (-8°C) | 3.2 in |
Clam Gulch has a seasonal temperature swing of 42°F / from 13°F in January to 55°F in July. Total annual precipitation is 28.3 inches, with September being the wettest month (4.1") and April the driest (1.2").