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Kodiak, Alaska climate
Cfb Oceanic / temperate
Kodiak has a seasonal cold-temperate climate (Oceanic / temperate, Köppen Cfb). The hottest month is August with an average daily high near 63°F, while the coldest is January averaging around 26°F at night. Precipitation is fairly even year-round, totalling about 78 inches. Snowfall is heavy (70 inches of snow per year on average). At latitude 58°N, day length swings from 6.2 hours in midwinter to 17.8 hours at midsummer.
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation split into rain and snow · 1991–2020 normals · hover a month for the exact figuresHours of sunshine per day
Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)Kodiak climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 36 | 38 | 39 | 45 | 52 | 57 | 62 | 63 | 57 | 48 | 41 | 37 |
| Avg temp (°F) | 31 | 32 | 33 | 39 | 46 | 51 | 56 | 57 | 51 | 42 | 36 | 32 |
| Avg low (°F) | 26 | 27 | 28 | 34 | 40 | 46 | 51 | 50 | 44 | 36 | 30 | 27 |
| Precipitation (in) | 8.4 | 6.3 | 4.8 | 6.1 | 5.9 | 5.2 | 4.5 | 4.9 | 7.6 | 8.9 | 7.1 | 8.8 |
| Snowfall (in) | 14.5 | 14.4 | 12.3 | 6.2 | 0.5 | — | — | — | — | 0.7 | 6.1 | 15.6 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 36 | 38 | 39 | 45 | 52 | 57 |
| Avg temp (°F) | 31 | 32 | 33 | 39 | 46 | 51 |
| Avg low (°F) | 26 | 27 | 28 | 34 | 40 | 46 |
| Precipitation (in) | 8.4 | 6.3 | 4.8 | 6.1 | 5.9 | 5.2 |
| Snowfall (in) | 14.5 | 14.4 | 12.3 | 6.2 | 0.5 | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 62 | 63 | 57 | 48 | 41 | 37 |
| Avg temp (°F) | 56 | 57 | 51 | 42 | 36 | 32 |
| Avg low (°F) | 51 | 50 | 44 | 36 | 30 | 27 |
| Precipitation (in) | 4.5 | 4.9 | 7.6 | 8.9 | 7.1 | 8.8 |
| Snowfall (in) | — | — | — | 0.7 | 6.1 | 15.6 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 19 | 17 | 16 | 18 | 17 | 16 | 15 | 15 | 17 | 18 | 17 | 20 |
| Days with low ≤ 32°F (days) | 22 | 20 | 23 | 12 | 3 | — | — | — | 1 | 11 | 20 | 22 |
| Days with snowfall ≥ 1 in (days) | 4 | 3 | 4 | 2 | 0.1 | — | — | — | — | 0.2 | 2 | 4 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 19 | 17 | 16 | 18 | 17 | 16 |
| Days with low ≤ 32°F (days) | 22 | 20 | 23 | 12 | 3 | — |
| Days with snowfall ≥ 1 in (days) | 4 | 3 | 4 | 2 | 0.1 | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 15 | 15 | 17 | 18 | 17 | 20 |
| Days with low ≤ 32°F (days) | — | — | 1 | 11 | 20 | 22 |
| Days with snowfall ≥ 1 in (days) | — | — | — | 0.2 | 2 | 4 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 71 | 74 | 69 | 73 | 75 | 77 | 76 | 73 | 73 | 72 | 69 | 74 |
| Relative humidity (%) | 89 | 87 | 83 | 83 | 83 | 82 | 82 | 83 | 84 | 84 | 86 | 88 |
| Wind speed (mph) | 12.5 | 12.5 | 12.4 | 11.2 | 9.1 | 7.6 | 6.7 | 7.7 | 9.7 | 11.3 | 12.7 | 13.1 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 71 | 74 | 69 | 73 | 75 | 77 |
| Relative humidity (%) | 89 | 87 | 83 | 83 | 83 | 82 |
| Wind speed (mph) | 12.5 | 12.5 | 12.4 | 11.2 | 9.1 | 7.6 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 76 | 73 | 73 | 72 | 69 | 74 |
| Relative humidity (%) | 82 | 83 | 84 | 84 | 86 | 88 |
| Wind speed (mph) | 6.7 | 7.7 | 9.7 | 11.3 | 12.7 | 13.1 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Kodiak AP (NOAA GHCN station USW00025501), about 6 km from the city centre.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.