Anchorage climate

Anchorage Weather in September

NOAA 1991-2020 normals for Louisville Bowman Fld, 12.2 km from Anchorage

Average highs run from 85°F on September 1 to 76°F on September 30, and lows from 65°F to 54°F. Normal precipitation for the month is 3.61 in over about 9 wet days.

September day by day

The normal high and low for each date, and the record, in °F.

Normal daily high and low temperature at Anchorage, in °F, with the record for each date.20406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
81°F
Average low
60°F
Precipitation
3.61 in
Record high
101°FSep 3, 2011
Record low
40°FSep 26, 2001
Chance of a freeze
0%
Days of 90°F or more
5.3
Daylight
13 h 00 min to 11 h 49 min
Cloud cover
48%
Humidity
68%
Dew point
56°F
Wind
6.3 mph

Every day of the month

A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.

DateNormal highNormal lowRecord highRecord lowChance wetChance of snow
Sep 185°F65°F98°F 201152°F 202529%0%
Sep 285°F65°F100°F 201155°F 201729%0%
Sep 385°F65°F101°F 201153°F 201729%0%
Sep 485°F64°F98°F 202655°F 202529%0%
Sep 584°F64°F96°F 200750°F 201029%0%
Sep 684°F64°F95°F 201549°F 201729%0%
Sep 784°F63°F95°F 201048°F 201729%0%
Sep 884°F63°F96°F 200246°F 202529%0%
Sep 983°F62°F97°F 200245°F 202429%0%
Sep 1083°F62°F98°F 201949°F 202429%0%
Sep 1183°F62°F95°F 201952°F 201729%0%
Sep 1282°F61°F96°F 201953°F 200729%0%
Sep 1382°F61°F96°F 201949°F 201528%0%
Sep 1482°F61°F93°F 201848°F 201428%0%
Sep 1581°F60°F96°F 202649°F 201328%0%
Sep 1681°F60°F95°F 201948°F 200029%0%
Sep 1781°F59°F96°F 202644°F 200029%0%
Sep 1880°F59°F95°F 200851°F 200029%0%
Sep 1980°F59°F94°F 201843°F 201229%0%
Sep 2080°F58°F95°F 201846°F 200329%0%
Sep 2179°F58°F96°F 201044°F 200629%0%
Sep 2279°F58°F96°F 201048°F 201229%0%
Sep 2378°F57°F96°F 201041°F 201229%0%
Sep 2478°F57°F94°F 201041°F 201229%0%
Sep 2578°F56°F92°F 200743°F 200129%0%
Sep 2677°F56°F91°F 201740°F 200129%0%
Sep 2777°F56°F94°F 201944°F 200029%0%
Sep 2877°F55°F95°F 201941°F 202229%0%
Sep 2976°F55°F95°F 201943°F 202229%0%
Sep 3076°F54°F97°F 201942°F 200329%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Anchorage, in percent, and of at least 0.1 inch of snowfall.01020301102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (EDT).

September 1
sunrise 7:12 AM, sunset 8:12 PM
September 30
sunrise 7:37 AM, sunset 7:26 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00013810 (Louisville Bowman Fld), public domain. Records: NOAA GHCN-Daily, station USW00013810, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.