King Salmon (42 mi SE), Alaska climate: Climate normals at a NOAA weather station
King Salmon (42 mi SE)'s normal year runs from 10°F January nights to 62°F July afternoons, with 32.1 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 1.8°C, January lows of −12°C, July highs of 16°C, 815 mm of precipitation a year.
- NOAA stationKing Salmon (42 mi SE)
- Station IDUSW00025522
- Location58.21°N 155.92°W
- Elevation661 ft (202 m)
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for King Salmon (42 mi SE).
- Jan 26° 10°
- Feb 31° 13°
- Mar 32° 14°
- Apr 43° 26°
- May 52° 33°
- Jun 59° 40°
- Jul 62° 46°
- Aug 61° 45°
- Sep 54° 39°
- Oct 43° 28°
- Nov 33° 17°
- Dec 27° 12°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like at King Salmon (42 mi SE) each month?
July is the warmest month, with normal highs of 62°F; January the coldest, with normal lows of 10°F. The most precipitation falls in September (5.12 in), the least in March (1.00 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 26°F | 10°F | 17.8°F | 1.76 | – | <1 | 25 | 7 h 10 min |
| February | 31°F | 13°F | 21.9°F | 2.15 | – | <1 | 24 | 9 h 20 min |
| March | 32°F | 14°F | 22.9°F | 1.00 | – | <1 | 28 | 11 h 40 min |
| April | 43°F | 26°F | 34.6°F | 1.45 | – | <1 | 22 | 14 h 20 min |
| May | 52°F | 33°F | 42.6°F | 1.46 | – | <1 | 13 | 16 h 40 min |
| June | 59°F | 40°F | 49.6°F | 2.46 | – | <1 | 3 | 18 h 10 min |
| July | 62°F | 46°F | 53.6°F | 3.67 | – | <1 | <1 | 17 h 40 min |
| August | 61°F | 45°F | 52.9°F | 4.41 | – | <1 | <1 | 15 h 30 min |
| September | 54°F | 39°F | 46.6°F | 5.12 | – | <1 | 7 | 13 h |
| October | 43°F | 28°F | 35.5°F | 2.89 | – | <1 | 17 | 10 h 30 min |
| November | 33°F | 17°F | 24.7°F | 3.63 | – | <1 | 24 | 8 h |
| December | 27°F | 12°F | 19.6°F | 2.08 | – | <1 | 27 | 6 h 30 min |
| Year (annual) | 44°F | 27°F | 35.2°F | 32.08 | – | <1 | 189 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | −3°C | −12°C | −7.9°C | 45 mm |
| February | 0°C | −11°C | −5.6°C | 55 mm |
| March | 0°C | −10°C | −5.1°C | 25 mm |
| April | 6°C | −3°C | 1.4°C | 37 mm |
| May | 11°C | 0°C | 5.9°C | 37 mm |
| June | 15°C | 4°C | 9.8°C | 62 mm |
| July | 16°C | 8°C | 12.0°C | 93 mm |
| August | 16°C | 7°C | 11.6°C | 112 mm |
| September | 12°C | 4°C | 8.1°C | 130 mm |
| October | 6°C | −2°C | 1.9°C | 73 mm |
| November | 0°C | −8°C | −4.1°C | 92 mm |
| December | −3°C | −11°C | −6.9°C | 53 mm |
NOAA publishes no 1991-2020 snowfall normal for this station, and no record within 25 miles keeps one, so snow is left out here rather than estimated.
Source: NOAA NCEI 1991-2020 monthly normals, station USW00025522; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
Which months are mildest at King Salmon (42 mi SE)?
No month's normal high reaches 65°F in King Salmon (42 mi SE): the warmest is July at 62°F.
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USW00025522.
When is the last frost at King Salmon (42 mi SE)?
In King Salmon (42 mi SE), the last spring frost (32°F) comes after June 9 in half of years and after June 22 in one year in ten; the first autumn frost comes before September 11 in half of years and before August 26 in one year in ten.
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- June 91 year in 10 after June 22; 9 in 10 after May 28
- First autumn frost, half of years before
- September 111 year in 10 before August 26; 9 in 10 before September 27
NOAA puts the median frost-free season at 93 days, and the season without a hard freeze (28°F) at 125 days.
A hard freeze (28°F) comes after May 23 in half of springs and before September 24 in half of autumns.
Frost dates for every NOAA station in Alaska · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USW00025522. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
How hot and how cold does it get at King Salmon (42 mi SE)?
In a normal year in King Salmon (42 mi SE), a 90°F day is rare and 189 nights fall to 32°F or colder.
- Days at 90°F or more
- fewer than 1a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 189a normal year
- Days that stay below freezing
- 68high of 32°F or less
Source: NOAA NCEI 1991-2020 annual normals, station USW00025522.
How sunny is it at King Salmon (42 mi SE)?
Over a year 58% of the sunlight that would reach the ground under clear skies gets through the clouds at King Salmon (42 mi SE), 2.4 kWh per square metre a day. March is the sunniest month (61%) and December the cloudiest (50%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 55% | 0.4 |
| February | 53% | 1.0 |
| March | 61% | 2.4 |
| April | 56% | 3.3 |
| May | 58% | 4.4 |
| June | 60% | 4.9 |
| July | 58% | 4.4 |
| August | 58% | 3.6 |
| September | 56% | 2.4 |
| October | 56% | 1.3 |
| November | 55% | 0.6 |
| December | 50% | 0.3 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How many heating and cooling degree days does King Salmon (42 mi SE) record?
A normal year at King Salmon (42 mi SE) brings 10,864 heating degree days, 2.0 times the median U.S. place (5,373), and 0 cooling degree days, 100% fewer than the median (908). Twelve months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 299 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,463 | 0 |
| February | 1,207 | 0 |
| March | 1,305 | 0 |
| April | 913 | 0 |
| May | 694 | 0 |
| June | 464 | 0 |
| July | 355 | 0 |
| August | 375 | 0 |
| September | 552 | 0 |
| October | 916 | 0 |
| November | 1,210 | 0 |
| December | 1,409 | 0 |
| Year (annual) | 10,864 | 0 |
Source: NOAA NCEI 1991-2020 monthly normals, station USW00025522. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
Have recent years at King Salmon (42 mi SE) been warmer than normal?
2025 averaged 37.0°F, 1.8°F above the 1991-2020 normal of 35.2°F. 1 of the 3 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 33.2°F | −2.0°F | 28.03 |
| 2023 | 34.9°F | −0.3°F | – |
| 2025 | 37.0°F | +1.8°F | 25.21 |
Source: observed years: ACIS, station USW00025522. A year counts only with all twelve months complete.
How does King Salmon (42 mi SE)'s climate compare?
King Salmon (42 mi SE) is warmer than 42 of the 85 places with their own NOAA record in Alaska, and wetter than 48. Across the 7,247 U.S. stations with normals, its annual mean of 35.2°F is warmer than 2%.
In the Köppen classification computed from these normals, King Salmon (42 mi SE) is Dfc: continental, no dry season, cool summer. What the classes mean.
Places with the most similar year elsewhere
Measured month by month on the normal high, low and precipitation, among places of 20,000 or more people in other states:
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers. Similarity: the root-mean-square difference of the 36 monthly figures, precipitation weighted so an inch counts like 6°F.
Questions about King Salmon (42 mi SE)'s climate
What is the coldest month at King Salmon (42 mi SE)?
January, with a normal high of 26°F and a normal low of 10°F. The warmest is July (62°F by day, 46°F at night).
What is the rainiest month at King Salmon (42 mi SE)?
September, with 5.12 in of precipitation in a normal year; the driest is March with 1.00 in.
How late can frost come at King Salmon (42 mi SE)?
In half of years the last 32°F night comes after June 9; in one year in ten it comes after June 22. Waiting until June 22 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Alaska climateThe statewide normals and every place in the state
- King Salmon, AK42 miles from this station, 36.5°F a year
- Intricate Bay, AK106 miles from this station, 36.7°F a year
- Iliamna, AK112 miles from this station, 37.7°F a year
- Ouzinkie, AK127 miles from this station, 40.5°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made