Nikiski Weather in September
Average highs run from 60°F on September 1 to 51°F on September 30, and lows from 43°F to 36°F. Normal precipitation for the month is 3.57 in over about 16 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
- 56°F
- Average low
- 40°F
- Precipitation
- 3.57 in
- Record high
- 75°FSep 2, 1904
- Record low
- -3°FSep 28, 1971
- Chance of a freeze
- 94%
- Daylight
- 14 h 10 min to 11 h 29 min
- Cloud cover
- 73%
- Humidity
- 80%
- Dew point
- 43°F
- Wind
- 7.8 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 | 43°F | 69°F 1904 | 30°F 1903 | 49% |
| Sep 2 | 60°F | 43°F | 75°F 1904 | 24°F 2015 | 49% |
| Sep 3 | 60°F | 43°F | 69°F 1904 | 28°F 1905 | 50% |
| Sep 4 | 59°F | 43°F | 70°F 1906 | 26°F 1907 | 50% |
| Sep 5 | 59°F | 42°F | 72°F 1905 | 25°F 1976 | 50% |
| Sep 6 | 59°F | 42°F | 70°F 1963 | 25°F 1976 | 50% |
| Sep 7 | 58°F | 42°F | 67°F 1905 | 24°F 1904 | 51% |
| Sep 8 | 58°F | 42°F | 70°F 2018 | 25°F 1952 | 51% |
| Sep 9 | 58°F | 41°F | 67°F 1965 | 23°F 1970 | 51% |
| Sep 10 | 58°F | 41°F | 68°F 2010 | 21°F 1970 | 51% |
| Sep 11 | 57°F | 41°F | 70°F 2018 | 24°F 1992 | 52% |
| Sep 12 | 57°F | 41°F | 72°F 2010 | 28°F 2020 | 52% |
| Sep 13 | 57°F | 41°F | 72°F 2018 | 23°F 1905 | 52% |
| Sep 14 | 56°F | 40°F | 69°F 2018 | 21°F 1987 | 52% |
| Sep 15 | 56°F | 40°F | 67°F 1969 | 23°F 1987 | 52% |
| Sep 16 | 56°F | 40°F | 74°F 1907 | 20°F 2003 | 52% |
| Sep 17 | 55°F | 40°F | 70°F 1906 | 21°F 1904 | 52% |
| Sep 18 | 55°F | 39°F | 66°F 1969 | 20°F 1907 | 52% |
| Sep 19 | 55°F | 39°F | 62°F 2009 | 20°F 2000 | 52% |
| Sep 20 | 54°F | 39°F | 64°F 1906 | 11°F 1904 | 52% |
| Sep 21 | 54°F | 39°F | 64°F 1969 | 13°F 1904 | 52% |
| Sep 22 | 54°F | 38°F | 62°F 1965 | 19°F 1992 | 52% |
| Sep 23 | 53°F | 38°F | 64°F 1951 | 16°F 1992 | 52% |
| Sep 24 | 53°F | 38°F | 63°F 1945 | 17°F 1992 | 51% |
| Sep 25 | 53°F | 38°F | 62°F 1944 | 15°F 1905 | 51% |
| Sep 26 | 52°F | 37°F | 60°F 1952 | 16°F 1902 | 51% |
| Sep 27 | 52°F | 37°F | 59°F 2003 | 17°F 1956 | 51% |
| Sep 28 | 52°F | 37°F | 63°F 1907 | -3°F 1971 | 50% |
| Sep 29 | 51°F | 36°F | 64°F 2018 | 13°F 1905 | 50% |
| Sep 30 | 51°F | 36°F | 61°F 2018 | 17°F 1904 | 50% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (AKDT).
- September 1
- sunrise 6:59 AM, sunset 9:09 PM
- September 30
- sunrise 8:10 AM, sunset 7:39 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00026523 (Kenai Muni AP), public domain. Records: NOAA GHCN-Daily, station USW00026523, 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.