Kenai weather in September: Kenai, Alaska: normal highs, lows, rain and records for September
Kenai in September has a normal high of 56°F and a normal low of 40°F, a daily mean of 48°F, falling from 60°F on the 1st to 51°F by the 30th. Measurable precipitation falls on 16 days in a normal September, 3.57 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 13°C and low of 4°C, 91 mm of precipitation in September.
- NOAA stationKenai Municipal Airport
- Station IDUSW00026523
- Location60.58°N 151.24°W
- Elevation91 ft (28 m)
- Population7,770
- Jan 22° 7°
- Feb 28° 12°
- Mar 33° 14°
- Apr 44° 28°
- May 55° 36°
- Jun 60° 44°
- Jul 63° 49°
- Aug 63° 47°
- Sep 56° 40°
- Oct 43° 29°
- Nov 30° 16°
- Dec 25° 11°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Kenai in September?
The normal high is 56°F and the normal low 40°F, for a daily mean of 47.8°F. September is 7.0°F cooler than August and 11.9°F warmer than October. September is the 4th warmest month of the year in Kenai and the wettest. Across the month the normal high falls 9°F, from 60°F on September 1 to 51°F on September 30. From one year to the next September's mean temperature typically moves about 2.5°F either way (NOAA's standard deviation), so roughly two Septembers in three average between 45°F and 50°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 52%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| September 1 | 60°F | 43°F | 49% | 27% |
| September 8 | 58°F | 42°F | 51% | 29% |
| September 15 | 56°F | 40°F | 52% | 29% |
| September 22 | 54°F | 38°F | 52% | 28% |
| September 30 | 51°F | 36°F | 50% | 27% |
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 | 60°F | 43°F | 49% | 27% | 14 h 20 min |
| September 2 | 60°F | 43°F | 49% | 28% | 14 h 10 min |
| September 3 | 60°F | 43°F | 50% | 28% | 14 h 10 min |
| September 4 | 59°F | 43°F | 50% | 28% | 14 h |
| September 5 | 59°F | 42°F | 50% | 28% | 14 h |
| September 6 | 59°F | 42°F | 50% | 28% | 13 h 50 min |
| September 7 | 58°F | 42°F | 51% | 28% | 13 h 50 min |
| September 8 | 58°F | 42°F | 51% | 29% | 13 h 40 min |
| September 9 | 58°F | 41°F | 51% | 29% | 13 h 30 min |
| September 10 | 58°F | 41°F | 51% | 29% | 13 h 30 min |
| September 11 | 57°F | 41°F | 52% | 29% | 13 h 20 min |
| September 12 | 57°F | 41°F | 52% | 29% | 13 h 20 min |
| September 13 | 57°F | 41°F | 52% | 29% | 13 h 10 min |
| September 14 | 56°F | 40°F | 52% | 29% | 13 h 10 min |
| September 15 | 56°F | 40°F | 52% | 29% | 13 h |
| September 16 | 56°F | 40°F | 52% | 29% | 13 h |
| September 17 | 55°F | 40°F | 52% | 29% | 12 h 50 min |
| September 18 | 55°F | 39°F | 52% | 29% | 12 h 40 min |
| September 19 | 55°F | 39°F | 52% | 29% | 12 h 40 min |
| September 20 | 54°F | 39°F | 52% | 29% | 12 h 30 min |
| September 21 | 54°F | 39°F | 52% | 28% | 12 h 30 min |
| September 22 | 54°F | 38°F | 52% | 28% | 12 h 20 min |
| September 23 | 53°F | 38°F | 52% | 28% | 12 h 20 min |
| September 24 | 53°F | 38°F | 51% | 28% | 12 h 10 min |
| September 25 | 53°F | 38°F | 51% | 28% | 12 h 10 min |
| September 26 | 52°F | 37°F | 51% | 28% | 12 h |
| September 27 | 52°F | 37°F | 51% | 27% | 11 h 50 min |
| September 28 | 52°F | 37°F | 50% | 27% | 11 h 50 min |
| September 29 | 51°F | 36°F | 50% | 27% | 11 h 40 min |
| September 30 | 51°F | 36°F | 50% | 27% | 11 h 40 min |
- Normal high
- 56°FSeptember average
- Normal low
- 40°FSeptember average
- Precipitation
- 3.57 inmonth total
- Days with precipitation
- 160.01 inch or more
- Nights at 32°F or colder
- 6
- Daylight
- 14 h 20 min to 11 h 40 minSeptember 1 to September 30
- Sunshine
- 62%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00026523; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Kenai in September?
On a given September day the chance of 0.01 inch or more is 51% on average, highest around September 17 (52%). In all, 3.57 in falls on 16 days of a normal September.
In a normal September in Kenai, 6 nights fall to freezing.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00026523.
How humid and windy is Kenai in September?
At 3 p.m. the normal temperature is 50°F with 64% relative humidity and a dew point of 38°F; at 6 a.m. it is 39°F with 85% humidity. The wind averages 7.6 mph, most often from the north-northeast in the afternoon. A dew point under 50°F feels dry.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 39°F | 35°F | 85% | 6.5 mph | – |
| 9 a.m. | 42°F | 37°F | 84% | 7.0 mph | – |
| noon | 48°F | 38°F | 69% | 9.8 mph | – |
| 3 p.m. | 50°F | 38°F | 64% | 10.2 mph | – |
| 6 p.m. | 48°F | 39°F | 71% | 8.0 mph | – |
| 9 p.m. | 43°F | 37°F | 81% | 6.3 mph | – |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00026523. 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 Kenai?
The warmest September temperature on this station's record (since 1899) is 75°F, on September 2, 1904; the coldest is −3°F, on September 28, 1971. The wettest September brought 10.00 in (1907); the snowiest, 4.0 inches (1992).
The September mean against the 1991-2020 normal of 47.8°F: 2021 45.1°F (−2.7), 2022 48.9°F (+1.1), 2023 46.0°F (−1.8), 2024 48.2°F (+0.4), 2026 49.0°F (+1.2). 3 of 5 ran warmer than normal.
| September | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 45.1°F | −2.7°F | 0.86 in |
| 2022 | 48.9°F | +1.1°F | 2.72 in |
| 2023 | 46.0°F | −1.8°F | 1.47 in |
| 2024 | 48.2°F | +0.4°F | 0.98 in |
| 2026 | 49.0°F | +1.2°F | 0.13 in |
Source: records: ACIS, station USW00026523; recent months: ACIS, station USW00026523. Records and recent months use complete months only.
How does September in Kenai 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; Kenai's is 56°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.