Bremerton weather in September: Bremerton, Washington: normal highs, lows, rain and records for September
Bremerton in September has a normal high of 72°F and a normal low of 51°F, a daily mean of 62°F, falling from 76°F on the 1st to 67°F by the 30th. Measurable precipitation falls on 9 days in a normal September, 1.80 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 22°C and low of 11°C, 46 mm of precipitation in September.
- NOAA stationBremerton
- Station IDUSC00450872
- Location47.57°N 122.68°W
- Elevation110 ft (34 m)
- Population45,291
- Jan 47° 36°
- Feb 49° 35°
- Mar 54° 38°
- Apr 59° 41°
- May 66° 47°
- Jun 70° 51°
- Jul 77° 55°
- Aug 77° 55°
- Sep 72° 51°
- Oct 61° 45°
- Nov 51° 39°
- Dec 46° 35°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Bremerton in September?
The normal high is 72°F and the normal low 51°F, for a daily mean of 61.5°F. September is 4.7°F cooler than August and 8.9°F warmer than October. September is the 3rd warmest month of the year in Bremerton and the 9th wettest. Across the month the normal high falls 9°F, from 76°F on September 1 to 67°F on September 30. From one year to the next September's mean temperature typically moves about 1.7°F either way (NOAA's standard deviation), so roughly two Septembers in three average between 60°F and 63°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 39%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| September 1 | 76°F | 54°F | 24% | 12% |
| September 8 | 74°F | 53°F | 27% | 14% |
| September 15 | 72°F | 51°F | 31% | 16% |
| September 22 | 70°F | 50°F | 35% | 19% |
| September 30 | 67°F | 48°F | 39% | 22% |
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 | 76°F | 54°F | 24% | 12% | 13 h 30 min |
| September 2 | 75°F | 53°F | 24% | 12% | 13 h 20 min |
| September 3 | 75°F | 53°F | 25% | 12% | 13 h 20 min |
| September 4 | 75°F | 53°F | 25% | 12% | 13 h 20 min |
| September 5 | 75°F | 53°F | 26% | 13% | 13 h 10 min |
| September 6 | 75°F | 53°F | 26% | 13% | 13 h 10 min |
| September 7 | 74°F | 53°F | 26% | 13% | 13 h 10 min |
| September 8 | 74°F | 53°F | 27% | 14% | 13 h |
| September 9 | 74°F | 52°F | 27% | 14% | 13 h |
| September 10 | 74°F | 52°F | 28% | 14% | 13 h |
| September 11 | 74°F | 52°F | 28% | 14% | 12 h 50 min |
| September 12 | 73°F | 52°F | 29% | 15% | 12 h 50 min |
| September 13 | 73°F | 52°F | 29% | 15% | 12 h 50 min |
| September 14 | 73°F | 52°F | 30% | 16% | 12 h 40 min |
| September 15 | 72°F | 51°F | 31% | 16% | 12 h 40 min |
| September 16 | 72°F | 51°F | 31% | 16% | 12 h 40 min |
| September 17 | 72°F | 51°F | 32% | 17% | 12 h 30 min |
| September 18 | 72°F | 51°F | 33% | 17% | 12 h 30 min |
| September 19 | 71°F | 51°F | 33% | 18% | 12 h 30 min |
| September 20 | 71°F | 50°F | 34% | 18% | 12 h 20 min |
| September 21 | 71°F | 50°F | 34% | 18% | 12 h 20 min |
| September 22 | 70°F | 50°F | 35% | 19% | 12 h 20 min |
| September 23 | 70°F | 50°F | 35% | 19% | 12 h 10 min |
| September 24 | 69°F | 50°F | 36% | 20% | 12 h 10 min |
| September 25 | 69°F | 49°F | 36% | 20% | 12 h 10 min |
| September 26 | 69°F | 49°F | 37% | 20% | 12 h |
| September 27 | 68°F | 49°F | 37% | 21% | 12 h |
| September 28 | 68°F | 49°F | 38% | 21% | 12 h |
| September 29 | 68°F | 48°F | 39% | 22% | 11 h 50 min |
| September 30 | 67°F | 48°F | 39% | 22% | 11 h 50 min |
- Normal high
- 72°FSeptember average
- Normal low
- 51°FSeptember average
- Precipitation
- 1.80 inmonth total
- Days with precipitation
- 90.01 inch or more
- Daylight
- 13 h 30 min to 11 h 50 minSeptember 1 to September 30
- Days at 70°F or more
- 18
- Days at 80°F or more
- 5
- Sunshine
- 74%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00450872; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Bremerton in September?
On a given September day the chance of 0.01 inch or more is 31% on average, highest around September 30 (39%). In all, 1.80 in falls on 9 days of a normal September.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00450872.
What are the records for September in Bremerton?
The warmest September temperature on this station's record (since 1899) is 97°F, on September 3, 1988; the coldest is 30°F, on September 21, 2003. The wettest September brought 7.31 in (2013).
The September mean against the 1991-2020 normal of 61.5°F: 2022 65.4°F (+3.9), 2023 62.0°F (+0.5). 2 of 2 ran warmer than normal.
| September | Mean | Against normal | Precip. |
|---|---|---|---|
| 2022 | 65.4°F | +3.9°F | 0.00 in |
| 2023 | 62.0°F | +0.5°F | 2.91 in |
Source: records: ACIS, station USC00450872; recent months: ACIS, station USC00450872. Records and recent months use complete months only.
How does September in Bremerton compare across Washington?
Across the 96 places PlainClimate covers in Washington, September normal highs run from 66°F in Coupeville to 81°F in Pasco; Bremerton's is 72°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.