Early autumn · Weather & things to do
Anchorage in September
The year's rain peaks now, with about 4.6 in (118 mm) falling in Anchorage, alongside highs near 55°F (13°C) and lows of 45°F (7°C).
It scores 59/100 for comfort, 5th of 12, which makes it a solid shoulder-season month.
- Avg high
- 55°F (13°C)
- Avg low
- 45°F (7°C)
- Rain
- 4.6 in (118 mm)
- Humidity
- 84%
- Cloud cover
- 78%
- Daylight
- ~12 h 32 min
- Comfort score
- 59/100 · Fair
What September feels like
It's cool, with highs near 55°F (13°C), so a proper jacket stays on most of the day.
Nights cool to an average low of 45°F (7°C).
Some rain is likely, about 4.6 in (118 mm) in the month, so pack for a shower or two.
Expect plenty of overcast days, with cloud cover near 78%.
Plan around September
September is shoulder season: good weather, a step below the best months (June – August).
- Inside the wettest three-month stretch, August – October.
- Comfort slips from 73/100 in August to 59/100.
- Our Alaska Glacier Route recommends Jun – Aug, so September falls outside its suggested window.
- Our Fairbanks, Talkeetna & Anchorage route recommends Dec – Mar, so September falls outside its suggested window.
What to pack for September
- Insulated jackethighs only 55°F
- Packable rain jacket or umbrellaa shower or two is likely
- Comfortable walking shoesmost picks involve some walking
What to do in Anchorage in September
Weather can go either way, so the picks below mix open-air spots with indoor backups.
Anchorage Museum
Alaska's largest museum, strong on Alaska Native objects, art and Arctic science.
Why now Our curated notes list it for "rainy day", which suits a wetter month.
Moose's Tooth Pub & Pizzeria
Long-running pizza and craft beer institution in Midtown.
Why now A warm sit-down stop when highs sit around 55°F.
Snow City Cafe
Downtown breakfast spot known for reindeer sausage and crab cake Benedict.
Why now Somewhere to warm up between colder walks.
Tony Knowles Coastal Trail
11-mile paved trail along Cook Inlet with views of Denali on clear days and moose sightings.
Rust's Flying Service
Floatplane flightseeing from Lake Hood, the world's busiest seaplane base, including Denali flights.
49th State Brewing
Downtown brewpub with a rooftop deck facing Cook Inlet and Sleeping Lady.
Nearby in September
- Talkeetna in September~77 mi · highs 54°F, 5.8 in rain · similar daytime temperatures, wetter
- Seward in September~79 mi · highs 52°F, 11.7 in rain · 1°C (3°F) cooler by day, wetter
- Homer in September~123 mi · highs 53°F, 7.4 in rain · similar daytime temperatures, wetter
- Fairbanks in September~260 mi · highs 52°F, 2.4 in rain · 2°C (3°F) cooler by day, drier
NASA POWER 2001–2025 monthly averages on a ~50 km grid, temperatures adjusted from the grid cell's ~296 m to Anchorage's ~32 m elevation (standard lapse rate). Comfort scores weigh temperature, rain, humidity and cloud: see how we score each month. Check a forecast before you go.
Anchorage in September: quick answers
Is September a good time to visit Anchorage?
It's a good shoulder-season choice, scoring 59/100 against a best of 77 in June – August. Expect highs of 55°F (13°C) and 4.6 in (118 mm) of rain. Our Alaska Glacier Route recommends Jun – Aug, so September is outside its suggested window.
How cold is Anchorage in September?
Average highs are 55°F (13°C) and average lows 45°F (7°C), making it the 4th-warmest month by daytime highs.
Does it rain a lot in Anchorage in September?
Some: about 4.6 in (118 mm) of rain falls across September on average, the wettest month of the year. The annual total is about 32.3 in (820 mm).
What should I pack for Anchorage in September?
Bring insulated jacket (highs only 55°F), packable rain jacket or umbrella (a shower or two is likely) and comfortable walking shoes (most picks involve some walking).
More on Anchorage
Planning Anchorage in September?
Bring the crew into one shared trip: vote on dates, build the day-by-day plan, split costs and share one packing list.