Weather in Alaska in September

General weather information about Alaska

Average annual temperature is 23.3 °C

Absolute maximum temperature: 37.6 °C

Absolute minimum temperature: 12.3 °C

Number of sunny days: 145 days

Number of rainy days: 220 days

Look at detailed online map of Alaska

* Weather data for Alaska Mexico is based on climate observations for 2026 year

Alaska air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)30.732.533.534.737.635.231.632.832.131.130.530.9
Average daytime temperature (°C)27.027.029.630.932.431.029.930.230.328.226.125.5
Average temperature (°C)21.021.123.124.425.625.124.524.524.623.221.620.5
Average night temperature (°C)17.417.218.919.720.621.321.020.821.020.319.017.2
Absolute minimum temperature (°C)13.513.516.618.116.319.319.919.219.017.314.412.3

Alaska monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)11.011.012.012.013.013.013.012.012.011.011.011.0
Daylight mean duration (h)11.311.612.012.512.913.113.012.712.211.811.411.2
Daylight minimum duration (h)11.011.011.012.012.013.012.012.012.011.011.011.0
Sunshine mean duration (h)10.210.410.911.511.710.710.310.510.59.79.09.7
Precipitation (mm)5825201874891257370295
Sunny days2319121915231861423
Rainy days891911162828302225168
Snow days000000000000

Alaska - weather forecast by months

Alaska weather in januaryAlaska weather in februaryAlaska weather in marchAlaska weather in aprilAlaska weather in mayAlaska weather in juneAlaska weather in julyAlaska weather in augustAlaska weather in septemberAlaska weather in octoberAlaska weather in novemberAlaska weather in december

Best time to visit Alaska:

The largest precipitation sum in Alaska is at

  • June — 74(mm)
  • July — 89(mm)
  • August — 125(mm)
  • September — 73(mm)
  • October — 70(mm)

    • Weather forecast in the closest to Alaska admin centers

    Weather forecast in the closest towns to Alaska

    Frequently asked questions

    When is the best time to visit Alaska?
    The historical weather data above shows the warmest, sunniest and driest months to help you choose the best time to visit Alaska.
    What is the weather like in Alaska?
    See average temperature, rainfall and daylight hours for Alaska by month in the table above.
    How many sunny days does Alaska have?
    The monthly weather statistics above show sunshine and rainfall patterns for Alaska throughout the year.