easeweather.com
Alaska (Ketchikan)
Anchorage (AK)Denali (AK)Denali National Park (AK)Denali Park (AK)Fairbanks (AK)Glacier Bay National Park and Preserve (AK)Homer (AK)Hoonah (AK)Juneau (AK)Ketchikan (AK)Seward (AK)Sitka (AK)Skagway (AK)Talkeetna (AK)Valdez (AK)Wainwright (AK)Wasilla (AK)Whittier (AK)Wrangell (AK) More Locations
United States weather

Weather in Alaska for September 2027

Your guide to Alaska weather in September - trends and predictions

    Temperatures

  • In general, the average temperature in Alaska at the beginning of September is 15.7 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 10.6 °C by the end of September.

    • Rain 🌧️

  • Alaska in September brings notable rainfall, with an average of 18 rainy days and a total precipitation of 544.8 mm.

    • More

  • Is September a good time to visit Alaska? check out the best time to travel to Alaska page.

  • ✨ Is September a good time to visit Alaska? – Ask the AI Weatherman

Average dry days
12
Dry days
Average rainy days
18
Rainy days
Average snowy days
0
Snow days
Average temperatures
13°/9°
Temperatures
Average wind speed
16 km/h
Avg max wind
Average humidity
86 %
Avg humidity

Alaska Weather September

Move between months or click on a day
August
October
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Light rain
16°
2
Overcast
18°
3
Cloudy
16°
4
Light rain
16°
5
Light rain
15°
6
Cloudy
15°
7
Patchy rain possible
15°
8
Light rain
15°
9
Light rain
15°
10
Patchy light drizzle
15°
11
Moderate rain
15°
12
Moderate rain
14°
13
Moderate rain
14°
14
Moderate rain
13°
15
Heavy rain
14°
16
Moderate rain
15°
17
Moderate rain
14°
18
Moderate rain
12°
19
Heavy rain
12°
20
Heavy rain
12°
21
Heavy rain
12°
22
Heavy rain
11°
23
Heavy rain
10°
24
Moderate rain
11°
25
Heavy rain
11°
26
Heavy rain
11°
27
Heavy rain
11°
28
Light rain
10°
29
Moderate rain
10°
30
Moderate rain
10°

What’s the Weather Like in Alaska This September?

Discover the average temperatures and weather trends across Alaska’s cities this September.
Patchy rain possibleKetchikan13 °C / 9 °CPatchy rain possibleJuneau10 °C / 5 °CPatchy rain possibleAnchorage11 °C / 7 °CPatchy rain possibleSkagway7 °C / 3 °CCloudyFairbanks10 °C / 4 °CPatchy rain possibleSitka12 °C / 9 °CPatchy rain possibleDenali National Park9 °C / 4 °CPatchy rain possibleGlacier Bay National Park and Preserve12 °C / 8 °CPatchy rain possibleSeward10 °C / 6 °CPatchy rain possibleWhittier9 °C / 5 °CPatchy rain possibleDenali Park6 °C / 0 °CPatchy rain possibleTalkeetna11 °C / 5 °CMore Locations

Temperatures trend during September in Alaska

See the weather trend as well as the moving average line

September weather in Alaska day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
Sept. 1 Light rain
Light rain
 16° /11° 7.7 mm 4
Sept. 2 Overcast
Overcast
 18° /11° 0 mm 4
Sept. 3 Cloudy
Cloudy
 16° /10° 0 mm 4
Sept. 4 Light rain
Light rain
 16° /11° 2.5 mm 4
Sept. 5 Light rain
Light rain
 15° /11° 7.2 mm 3
Sept. 6 Cloudy
Cloudy
 15° /11° 0.2 mm 4
Sept. 7 Patchy rain possible
Patchy rain possible
 15° /11° 0.2 mm 3
Sept. 8 Light rain
Light rain
 15° /11° 3.7 mm 3
Sept. 9 Light rain
Light rain
 15° /10° 7.6 mm 3
Sept. 10 Patchy light drizzle
Patchy light drizzle
 15° /10° 1.8 mm 3
Sept. 11 Moderate rain
Moderate rain
 15° /10° 22.6 mm 4
Sept. 12 Moderate rain
Moderate rain
 14° /10° 6.7 mm 3
Sept. 13 Moderate rain
Moderate rain
 14° /9° 17.5 mm 3
Sept. 14 Moderate rain
Moderate rain
 13° /10° 11.8 mm 3
Sept. 15 Heavy rain
Heavy rain
 14° /9° 49.9 mm 3
Sept. 16 Moderate rain
Moderate rain
 15° /10° 23.6 mm 3
Sept. 17 Moderate rain
Moderate rain
 14° /11° 22.2 mm 3
Sept. 18 Moderate rain
Moderate rain
 12° /9° 12 mm 2
Sept. 19 Heavy rain
Heavy rain
 12° /10° 37.6 mm 2
Sept. 20 Heavy rain
Heavy rain
 12° /9° 39.8 mm 2
Sept. 21 Heavy rain
Heavy rain
 12° /10° 29 mm 2
Sept. 22 Heavy rain
Heavy rain
 11° /9° 47.8 mm 2
Sept. 23 Heavy rain
Heavy rain
 10° /9° 35.2 mm 2
Sept. 24 Moderate rain
Moderate rain
 11° /8° 20.4 mm 2.9
Sept. 25 Heavy rain
Heavy rain
 11° /8° 26.7 mm 2.8
Sept. 26 Heavy rain
Heavy rain
 11° /8° 35.1 mm 2
Sept. 27 Heavy rain
Heavy rain
 11° /8° 32.7 mm 2
Sept. 28 Light rain
Light rain
 10° /8° 3 mm 2
Sept. 29 Moderate rain
Moderate rain
 10° /7° 21.7 mm 2
Sept. 30 Moderate rain
Moderate rain
 10° /7° 18.7 mm 2
Next
Important Notice
Our weather forecast for Alaska in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Alaska forecast closer to your planned date for the most up-to-date weather information.
Change Month
‹
›

Alaska in September - FAQ

What are the expected maximum and minimum temperatures in Alaska during September?
During September, expect a variety of temperatures with highs around 13° and lows near 9°, suitable for diverse activities and preferences.

How much rainfall should be expected in Alaska during September?
Significant rainfall exceeding 544.8 mm is expected in Alaska during September, occurring over more than 18 days. Preparing for wet conditions is recommended in your planning.

What are the typical wind conditions in Alaska during September?
The average wind speed in Alaska during September is 16 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Alaska

Explore the daily rainfall trends and prepare for Alaskas September weather 💧
Typically, Alaska has 18 rainy days in September with a total of 544.8 mm of rainfall.
Counties in Alaska
Select a county for an accurate weather forecast
Anchorage MunicipalityChugach Census AreaCity and Borough of WrangellDenali BoroughFairbanks North Star BoroughHoonah-Angoon Census AreaJuneau City and BoroughKenai Peninsula BoroughKetchikan Gateway BoroughMatanuska-Susitna BoroughNorth Slope BoroughSitka City and BoroughSkagway Municipality
Top locations in Alaska
Select a location for an accurate weather forecast
AnchorageDenali National ParkFairbanksGlacier Bay National Park and PreserveJuneauKetchikanSewardSitkaSkagwayWhittier
More Locations
Quick links
More Alaska weather pages
You are here
Found a mistake?
We appreciate your attention to details. Tell us here.