Homer weather in September: Homer, Alaska: normal highs, lows, rain and records for September
Homer in September has a normal high of 57°F and a normal low of 42°F, a daily mean of 50°F, falling from 60°F on the 1st to 53°F by the 30th. Measurable precipitation falls on 17 days in a normal September, 3.28 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 14°C and low of 6°C, 83 mm of precipitation in September.
- NOAA stationHomer Airport
- Station IDUSW00025507
- Location59.64°N 151.49°W
- Elevation64 ft (20 m)
- Population6,136
- Jan 32° 19°
- Feb 35° 22°
- Mar 37° 23°
- Apr 46° 31°
- May 54° 38°
- Jun 59° 45°
- Jul 63° 49°
- Aug 63° 48°
- Sep 57° 42°
- Oct 47° 33°
- Nov 38° 25°
- Dec 34° 21°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Homer in September?
The normal high is 57°F and the normal low 42°F, for a daily mean of 49.5°F. September is 5.8°F cooler than August and 9.3°F warmer than October. September is the 4th warmest month of the year in Homer and the wettest. Across the month the normal high falls 7°F, from 60°F on September 1 to 53°F on September 30. From one year to the next September's mean temperature typically moves about 1.9°F either way (NOAA's standard deviation), so roughly two Septembers in three average between 48°F and 51°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 55%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| September 1 | 60°F | 45°F | 51% | 28% |
| September 8 | 59°F | 44°F | 53% | 30% |
| September 15 | 57°F | 43°F | 54% | 30% |
| September 22 | 55°F | 41°F | 55% | 31% |
| September 30 | 53°F | 39°F | 53% | 30% |
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 | 45°F | 51% | 28% | 14 h 10 min |
| September 2 | 60°F | 45°F | 51% | 28% | 14 h 10 min |
| September 3 | 60°F | 45°F | 52% | 29% | 14 h |
| September 4 | 60°F | 45°F | 52% | 29% | 14 h |
| September 5 | 59°F | 45°F | 52% | 29% | 13 h 50 min |
| September 6 | 59°F | 44°F | 53% | 29% | 13 h 50 min |
| September 7 | 59°F | 44°F | 53% | 29% | 13 h 40 min |
| September 8 | 59°F | 44°F | 53% | 30% | 13 h 40 min |
| September 9 | 58°F | 44°F | 53% | 30% | 13 h 30 min |
| September 10 | 58°F | 44°F | 53% | 30% | 13 h 30 min |
| September 11 | 58°F | 43°F | 54% | 30% | 13 h 20 min |
| September 12 | 58°F | 43°F | 54% | 30% | 13 h 10 min |
| September 13 | 57°F | 43°F | 54% | 30% | 13 h 10 min |
| September 14 | 57°F | 43°F | 54% | 30% | 13 h |
| September 15 | 57°F | 43°F | 54% | 30% | 13 h |
| September 16 | 57°F | 42°F | 54% | 31% | 12 h 50 min |
| September 17 | 56°F | 42°F | 54% | 31% | 12 h 50 min |
| September 18 | 56°F | 42°F | 54% | 31% | 12 h 40 min |
| September 19 | 56°F | 42°F | 55% | 31% | 12 h 40 min |
| September 20 | 56°F | 41°F | 55% | 31% | 12 h 30 min |
| September 21 | 55°F | 41°F | 55% | 31% | 12 h 30 min |
| September 22 | 55°F | 41°F | 55% | 31% | 12 h 20 min |
| September 23 | 55°F | 41°F | 54% | 31% | 12 h 20 min |
| September 24 | 55°F | 40°F | 54% | 31% | 12 h 10 min |
| September 25 | 54°F | 40°F | 54% | 30% | 12 h 10 min |
| September 26 | 54°F | 40°F | 54% | 30% | 12 h |
| September 27 | 54°F | 40°F | 54% | 30% | 12 h |
| September 28 | 53°F | 39°F | 54% | 30% | 11 h 50 min |
| September 29 | 53°F | 39°F | 53% | 30% | 11 h 40 min |
| September 30 | 53°F | 39°F | 53% | 30% | 11 h 40 min |
- Normal high
- 57°FSeptember average
- Normal low
- 42°FSeptember average
- Precipitation
- 3.28 inmonth total
- Days with precipitation
- 170.01 inch or more
- Nights at 32°F or colder
- 3
- Daylight
- 14 h 10 min to 11 h 40 minSeptember 1 to September 30
- Sunshine
- 60%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00025507; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Homer in September?
On a given September day the chance of 0.01 inch or more is 54% on average, highest around September 19 (55%). In all, 3.28 in falls on 17 days of a normal September.
In a normal September in Homer, 3 nights fall to freezing.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00025507.
How humid and windy is Homer in September?
At 3 p.m. the normal temperature is 50°F with 67% relative humidity and a dew point of 39°F; at 6 a.m. it is 42°F with 83% humidity. The wind averages 6.3 mph, most often from the southwest in the afternoon. A dew point under 50°F feels dry.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 42°F | 37°F | 83% | 5.4 mph | – |
| 9 a.m. | 44°F | 39°F | 81% | 5.9 mph | – |
| noon | 49°F | 39°F | 70% | 7.5 mph | – |
| 3 p.m. | 50°F | 39°F | 67% | 8.2 mph | – |
| 6 p.m. | 48°F | 39°F | 70% | 6.8 mph | – |
| 9 p.m. | 45°F | 38°F | 77% | 5.7 mph | 33% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00025507. 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 Homer?
The warmest September temperature on Homer's official record (since 1932) is 69°F, on September 11, 1997; the coldest is 20°F, on September 28, 1956. The wettest September brought 6.18 in (1990).
The September mean against the 1991-2020 normal of 49.5°F: 2021 46.8°F (−2.8), 2022 50.0°F (+0.5), 2023 48.4°F (−1.1), 2024 50.4°F (+0.9), 2026 49.3°F (−0.2). 2 of 5 ran warmer than normal.
| September | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 46.8°F | −2.8°F | 1.81 in |
| 2022 | 50.0°F | +0.5°F | 2.92 in |
| 2023 | 48.4°F | −1.1°F | 2.24 in |
| 2024 | 50.4°F | +0.9°F | 2.86 in |
| 2026 | 49.3°F | −0.2°F | 1.72 in |
Source: records: ACIS, NWS threaded record HOMthr; recent months: ACIS, station USW00025507. Records and recent months use complete months only.
How does September in Homer 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; Homer's is 57°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.