Sitka Weather in September
Average highs run from 60°F on September 1 to 54°F on September 30, and lows from 48°F to 43°F. Normal precipitation for the month is 13.78 in over about 21 wet days.
September day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
September at a glance
- Average high
- 57°F
- Average low
- 45°F
- Precipitation
- 13.78 in
- Record high
- 77°FSep 4, 1986
- Record low
- 31°FSep 26, 1956
- Chance of a freeze
- 8%
- Daylight
- 13 h 53 min to 11 h 35 min
- Cloud cover
- 76%
- Humidity
- 87%
- Dew point
- 49°F
- Wind
- 11.9 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation.
| Date | Normal high | Normal low | Record high | Record low | Chance wet |
|---|---|---|---|---|---|
| Sep 1 | 60°F | 48°F | 68°F 1978 | 43°F 2015 | 70% |
| Sep 2 | 60°F | 48°F | 71°F 1977 | 42°F 2000 | 70% |
| Sep 3 | 60°F | 47°F | 75°F 1977 | 35°F 1944 | 70% |
| Sep 4 | 60°F | 47°F | 77°F 1986 | 40°F 1944 | 70% |
| Sep 5 | 60°F | 47°F | 77°F 1986 | 42°F 1959 | 70% |
| Sep 6 | 59°F | 47°F | 75°F 1986 | 40°F 1950 | 70% |
| Sep 7 | 59°F | 47°F | 71°F 1979 | 39°F 1944 | 70% |
| Sep 8 | 59°F | 47°F | 70°F 2019 | 39°F 1952 | 70% |
| Sep 9 | 59°F | 47°F | 72°F 1956 | 40°F 1970 | 70% |
| Sep 10 | 59°F | 46°F | 72°F 2023 | 37°F 1970 | 70% |
| Sep 11 | 58°F | 46°F | 69°F 2018 | 39°F 1970 | 70% |
| Sep 12 | 58°F | 46°F | 74°F 2011 | 40°F 1970 | 70% |
| Sep 13 | 58°F | 46°F | 70°F 1986 | 33°F 1992 | 70% |
| Sep 14 | 58°F | 46°F | 75°F 1986 | 37°F 1992 | 70% |
| Sep 15 | 58°F | 46°F | 75°F 1951 | 40°F 1992 | 71% |
| Sep 16 | 57°F | 45°F | 73°F 2025 | 36°F 1992 | 71% |
| Sep 17 | 57°F | 45°F | 75°F 1995 | 37°F 1983 | 71% |
| Sep 18 | 57°F | 45°F | 73°F 2010 | 39°F 1972 | 71% |
| Sep 19 | 57°F | 45°F | 65°F 1944 | 38°F 1955 | 72% |
| Sep 20 | 56°F | 45°F | 72°F 1974 | 36°F 1955 | 72% |
| Sep 21 | 56°F | 45°F | 70°F 1976 | 37°F 1955 | 72% |
| Sep 22 | 56°F | 44°F | 69°F 1944 | 38°F 1956 | 73% |
| Sep 23 | 56°F | 44°F | 74°F 1995 | 34°F 1956 | 73% |
| Sep 24 | 56°F | 44°F | 71°F 1995 | 35°F 1972 | 73% |
| Sep 25 | 55°F | 44°F | 66°F 2023 | 34°F 1972 | 74% |
| Sep 26 | 55°F | 44°F | 67°F 1944 | 31°F 1956 | 74% |
| Sep 27 | 55°F | 43°F | 65°F 1995 | 33°F 1983 | 74% |
| Sep 28 | 55°F | 43°F | 75°F 1944 | 35°F 1961 | 75% |
| Sep 29 | 54°F | 43°F | 74°F 2003 | 35°F 2009 | 75% |
| Sep 30 | 54°F | 43°F | 70°F 2020 | 33°F 1996 | 75% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (AKDT).
- September 1
- sunrise 6:04 AM, sunset 7:57 PM
- September 30
- sunrise 7:03 AM, sunset 6:38 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00025379 (Sitka 1 Ne), public domain. Records: NOAA GHCN-Daily, station USW00025333, 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.