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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 17°C, while the coldest is January averaging around −3°C at night. Precipitation is fairly even year-round, totalling about 1989 mm. Snowfall is heavy (179 cm 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 (°C) | 2 | 3 | 4 | 7 | 11 | 14 | 17 | 17 | 14 | 9 | 5 | 3 |
| Avg temp (°C) | 0 | 0 | 1 | 4 | 8 | 11 | 13 | 14 | 10 | 6 | 2 | 0 |
| Avg low (°C) | −3 | −3 | −2 | 1 | 4 | 8 | 10 | 10 | 7 | 2 | −1 | −3 |
| Precipitation (mm) | 212 | 160 | 122 | 156 | 149 | 131 | 115 | 124 | 192 | 225 | 179 | 224 |
| Snowfall (cm) | 37 | 37 | 31 | 16 | 1 | — | — | — | — | 2 | 15 | 40 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 2 | 3 | 4 | 7 | 11 | 14 |
| Avg temp (°C) | 0 | 0 | 1 | 4 | 8 | 11 |
| Avg low (°C) | −3 | −3 | −2 | 1 | 4 | 8 |
| Precipitation (mm) | 212 | 160 | 122 | 156 | 149 | 131 |
| Snowfall (cm) | 37 | 37 | 31 | 16 | 1 | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 17 | 17 | 14 | 9 | 5 | 3 |
| Avg temp (°C) | 13 | 14 | 10 | 6 | 2 | 0 |
| Avg low (°C) | 10 | 10 | 7 | 2 | −1 | −3 |
| Precipitation (mm) | 115 | 124 | 192 | 225 | 179 | 224 |
| Snowfall (cm) | — | — | — | 2 | 15 | 40 |
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 ≤ 0°C (days) | 22 | 20 | 23 | 12 | 3 | — | — | — | 1 | 11 | 20 | 22 |
| Days with snowfall ≥ 2.5 cm (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 ≤ 0°C (days) | 22 | 20 | 23 | 12 | 3 | — |
| Days with snowfall ≥ 2.5 cm (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 ≤ 0°C (days) | — | — | 1 | 11 | 20 | 22 |
| Days with snowfall ≥ 2.5 cm (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 (km/h) | 20.2 | 20.1 | 19.9 | 18.0 | 14.7 | 12.2 | 10.8 | 12.4 | 15.6 | 18.1 | 20.4 | 21.0 |
| 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 (km/h) | 20.2 | 20.1 | 19.9 | 18.0 | 14.7 | 12.2 |
| 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 (km/h) | 10.8 | 12.4 | 15.6 | 18.1 | 20.4 | 21.0 |
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.