Kotzebue weather in September: Kotzebue, Alaska: normal highs, lows, rain and records for September
Kotzebue in September has a normal high of 48°F and a normal low of 39°F, a daily mean of 43°F, falling from 54°F on the 1st to 40°F by the 30th. Measurable precipitation falls on 12 days in a normal September, 1.42 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 9°C and low of 4°C, 36 mm of precipitation and 2 cm of snow in September.
- NOAA stationKotzebue Airport
- Station IDUSW00026616
- Location66.87°N 162.63°W
- Elevation30 ft (9 m)
- Population2,889
- Jan 5° -8°
- Feb 9° -6°
- Mar 9° -6°
- Apr 24° 9°
- May 39° 27°
- Jun 53° 42°
- Jul 60° 51°
- Aug 57° 48°
- Sep 48° 39°
- Oct 31° 23°
- Nov 16° 6°
- Dec 9° -4°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Kotzebue in September?
The normal high is 48°F and the normal low 39°F, for a daily mean of 43.1°F. September is 9.0°F cooler than August and 16.2°F warmer than October. September is the 4th warmest month of the year in Kotzebue and the 3rd wettest. Across the month the normal high falls 14°F, from 54°F on September 1 to 40°F on September 30. From one year to the next September's mean temperature typically moves about 3.7°F either way (NOAA's standard deviation), so roughly two Septembers in three average between 39°F and 47°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 41%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| September 1 | 54°F | 44°F | 41% | 18% |
| September 8 | 51°F | 42°F | 40% | 17% |
| September 15 | 48°F | 39°F | 40% | 16% |
| September 22 | 45°F | 36°F | 39% | 15% |
| September 30 | 40°F | 32°F | 39% | 14% |
Every day of September: normal high, low and chance of precipitation (warmest afternoon September 1, coldest night September 30)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| September 1 | 54°F | 44°F | 41% | 18% | 15 h |
| September 2 | 53°F | 44°F | 41% | 18% | 15 h |
| September 3 | 53°F | 44°F | 41% | 18% | 14 h 50 min |
| September 4 | 53°F | 44°F | 41% | 18% | 14 h 40 min |
| September 5 | 52°F | 43°F | 41% | 18% | 14 h 30 min |
| September 6 | 52°F | 43°F | 40% | 17% | 14 h 30 min |
| September 7 | 52°F | 42°F | 40% | 17% | 14 h 20 min |
| September 8 | 51°F | 42°F | 40% | 17% | 14 h 10 min |
| September 9 | 51°F | 42°F | 40% | 17% | 14 h |
| September 10 | 50°F | 41°F | 40% | 17% | 14 h |
| September 11 | 50°F | 41°F | 40% | 17% | 13 h 50 min |
| September 12 | 50°F | 41°F | 40% | 17% | 13 h 40 min |
| September 13 | 49°F | 40°F | 40% | 16% | 13 h 30 min |
| September 14 | 49°F | 40°F | 40% | 16% | 13 h 30 min |
| September 15 | 48°F | 39°F | 40% | 16% | 13 h 20 min |
| September 16 | 48°F | 39°F | 40% | 16% | 13 h 10 min |
| September 17 | 47°F | 38°F | 40% | 16% | 13 h 10 min |
| September 18 | 47°F | 38°F | 40% | 16% | 13 h |
| September 19 | 46°F | 37°F | 40% | 16% | 12 h 50 min |
| September 20 | 46°F | 37°F | 40% | 16% | 12 h 40 min |
| September 21 | 45°F | 36°F | 39% | 15% | 12 h 40 min |
| September 22 | 45°F | 36°F | 39% | 15% | 12 h 30 min |
| September 23 | 44°F | 36°F | 39% | 15% | 12 h 20 min |
| September 24 | 43°F | 35°F | 39% | 15% | 12 h 10 min |
| September 25 | 43°F | 35°F | 39% | 15% | 12 h 10 min |
| September 26 | 42°F | 34°F | 39% | 15% | 12 h |
| September 27 | 42°F | 34°F | 39% | 14% | 11 h 50 min |
| September 28 | 41°F | 33°F | 39% | 14% | 11 h 50 min |
| September 29 | 41°F | 33°F | 39% | 14% | 11 h 40 min |
| September 30 | 40°F | 32°F | 39% | 14% | 11 h 30 min |
- Normal high
- 48°FSeptember average
- Normal low
- 39°FSeptember average
- Precipitation
- 1.42 inmonth total
- Days with precipitation
- 120.01 inch or more
- Snowfall
- 0.6 inmonth total
- Nights at 32°F or colder
- 6
- Daylight
- 15 h to 11 h 30 minSeptember 1 to September 30
- Sunshine
- 66%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00026616; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain or snow in Kotzebue in September?
On a given September day the chance of 0.01 inch or more is 40% on average, highest around September 1 (41%). In all, 1.42 in falls on 12 days of a normal September.
In a normal September in Kotzebue, 6 nights fall to freezing and snowfall averages 0.6 inches.
Snow falls on 1 day in a normal September.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00026616.
How humid and windy is Kotzebue in September?
At 3 p.m. the normal temperature is 39°F with 70% relative humidity and a dew point of 30°F; at 6 a.m. it is 34°F with 81% humidity. The wind averages 12.7 mph, most often from the east in the afternoon. A dew point under 50°F feels dry.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 34°F | 29°F | 81% | 12.6 mph | 37% |
| 9 a.m. | 34°F | 29°F | 81% | 12.6 mph | 21% |
| noon | 37°F | 30°F | 76% | 13.6 mph | 25% |
| 3 p.m. | 39°F | 30°F | 70% | 13.5 mph | 22% |
| 6 p.m. | 39°F | 30°F | 72% | 12.5 mph | 27% |
| 9 p.m. | 37°F | 30°F | 77% | 12.2 mph | 28% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00026616. Hourly normals exist only for NOAA's first-order stations; a dash where NOAA publishes no value for that hour (the sky at some hours).
What are the records for September in Kotzebue?
The warmest September temperature on Kotzebue's official record (since 1902) is 69°F, on September 3, 1978; the coldest is 13°F, on September 29, 1992. The wettest September brought 4.31 in (1977); the snowiest, 7.4 inches (1957).
The September mean against the 1991-2020 normal of 43.1°F: 2021 40.4°F (−2.7), 2022 44.9°F (+1.8), 2023 41.3°F (−1.8), 2024 41.3°F (−1.8), 2025 41.0°F (−2.1), 2026 43.0°F (−0.1). 1 of 6 ran warmer than normal.
| September | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 40.4°F | −2.7°F | 2.28 in |
| 2022 | 44.9°F | +1.8°F | 1.46 in |
| 2023 | 41.3°F | −1.8°F | 3.30 in |
| 2024 | 41.3°F | −1.8°F | 0.66 in |
| 2025 | 41.0°F | −2.1°F | 0.37 in |
| 2026 | 43.0°F | −0.1°F | 2.30 in |
Source: records: ACIS, NWS threaded record OTZthr; recent months: ACIS, station USW00026616. Records and recent months use complete months only.
How does September in Kotzebue compare across Alaska?
Across the 85 places PlainClimate covers in Alaska, September normal highs run from 37°F in Utqiaġvik to 60°F in Klawock; Kotzebue's is 48°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.