Average Precipitation for Alaska in September

The tables below give monthly averages for rainfall plus snowfall during September at communities and other locations around Alaska.

Each place has a total for the amount of precipitation it usually receives this month. There is also a count of the number of days with wet weather, when precipitation amounts to 0.01 inches (0.25 millimetres) or more.

The precipitation totals are averages based on weather data collected from 1991 to 2020 for the US National Centers for Environmental Information.

You can jump to a separate table for each region of the state: Southeast, South - Central, Southwest, Interior and Far North Alaska.

Southeast Alaska

Average monthly precipitation in September
Days	Place	Inches	Millimetres
20	Annette Island	10.2	258
19	Haines	6.8	172
22	Juneau	9.2	232
20	Ketchikan	14.3	363
22	Sitka	11.7	297
17	Skagway	3.9	99
22	Yakutat	19.0	483

South - Central Alaska

September averages for total rainfall plus snowfall
Days	Place	Inches	Millimetres
15	Anchorage	3.1	79
11	Gulkana	1.4	36
17	Homer	3.3	83
17	Seward	9.9	251
16	Talkeetna	4.5	114
21	Valdez	9.8	248

Southwest Alaska

Average amount of rain and snow in September
Days	Place	Inches	Millimetres
17	Bethel	2.9	73
23	Cold Bay	4.5	114
18	King Salmon	3.4	86
17	Kodiak	7.6	192
14	McGrath	2.5	64
11	Port Alsworth	2.6	65
20	St Paul Island	3.0	76

Interior Alaska

Precipitation totals for September
Days	Place	Inches	Millimetres
11	Fairbanks	1.4	34
13	McKinley Park	1.7	44
12	Tanana	1.7	43
6	Tok	1.0	24

Far North Alaska

Total precipitation during September
Days	Place	Inches	Millimetres
14	Barrow	0.8	20
13	Bettles	2.1	54
12	Kotzebue	1.4	36
14	Nome	2.2	56