Port Townsend weather in September: Port Townsend, Washington: normal highs, lows, rain and records for September
Port Townsend in September has a normal high of 68°F and a normal low of 51°F, a daily mean of 60°F, falling from 71°F on the 1st to 64°F by the 30th. Measurable precipitation falls on 7 days in a normal September, 1.10 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 20°C and low of 11°C, 28 mm of precipitation in September.
- NOAA stationPort Townsend
- Station IDUSC00456678
- Location48.12°N 122.76°W
- Elevation100 ft (31 m)
- Population10,649
- Jan 46° 38°
- Feb 49° 38°
- Mar 52° 40°
- Apr 58° 43°
- May 63° 47°
- Jun 68° 51°
- Jul 73° 53°
- Aug 73° 54°
- Sep 68° 51°
- Oct 58° 46°
- Nov 50° 41°
- Dec 45° 38°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Port Townsend in September?
The normal high is 68°F and the normal low 51°F, for a daily mean of 59.5°F. September is 3.8°F cooler than August and 7.3°F warmer than October. September is the 3rd warmest month of the year in Port Townsend and the 10th wettest. Across the month the normal high falls 7°F, from 71°F on September 1 to 64°F on September 30. From one year to the next September's mean temperature typically moves about 1.4°F either way (NOAA's standard deviation), so roughly two Septembers in three average between 58°F and 61°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 30%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| September 1 | 71°F | 53°F | 22% | 8% |
| September 8 | 70°F | 52°F | 24% | 9% |
| September 15 | 68°F | 51°F | 25% | 10% |
| September 22 | 66°F | 50°F | 27% | 11% |
| September 30 | 64°F | 49°F | 30% | 13% |
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 | 71°F | 53°F | 22% | 8% | 13 h 30 min |
| September 2 | 71°F | 53°F | 22% | 8% | 13 h 20 min |
| September 3 | 71°F | 53°F | 22% | 8% | 13 h 20 min |
| September 4 | 71°F | 52°F | 23% | 8% | 13 h 20 min |
| September 5 | 71°F | 52°F | 23% | 8% | 13 h 10 min |
| September 6 | 71°F | 52°F | 23% | 8% | 13 h 10 min |
| September 7 | 70°F | 52°F | 23% | 9% | 13 h 10 min |
| September 8 | 70°F | 52°F | 24% | 9% | 13 h |
| September 9 | 70°F | 52°F | 24% | 9% | 13 h |
| September 10 | 70°F | 52°F | 24% | 9% | 13 h |
| September 11 | 69°F | 52°F | 24% | 9% | 12 h 50 min |
| September 12 | 69°F | 52°F | 24% | 9% | 12 h 50 min |
| September 13 | 69°F | 51°F | 25% | 9% | 12 h 50 min |
| September 14 | 69°F | 51°F | 25% | 10% | 12 h 40 min |
| September 15 | 68°F | 51°F | 25% | 10% | 12 h 40 min |
| September 16 | 68°F | 51°F | 26% | 10% | 12 h 40 min |
| September 17 | 68°F | 51°F | 26% | 10% | 12 h 30 min |
| September 18 | 68°F | 51°F | 26% | 10% | 12 h 30 min |
| September 19 | 67°F | 51°F | 26% | 10% | 12 h 30 min |
| September 20 | 67°F | 51°F | 27% | 11% | 12 h 20 min |
| September 21 | 67°F | 50°F | 27% | 11% | 12 h 20 min |
| September 22 | 66°F | 50°F | 27% | 11% | 12 h 20 min |
| September 23 | 66°F | 50°F | 27% | 11% | 12 h 10 min |
| September 24 | 66°F | 50°F | 28% | 11% | 12 h 10 min |
| September 25 | 65°F | 50°F | 28% | 12% | 12 h 10 min |
| September 26 | 65°F | 50°F | 29% | 12% | 12 h |
| September 27 | 65°F | 49°F | 29% | 12% | 12 h |
| September 28 | 64°F | 49°F | 29% | 13% | 11 h 50 min |
| September 29 | 64°F | 49°F | 30% | 13% | 11 h 50 min |
| September 30 | 64°F | 49°F | 30% | 13% | 11 h 50 min |
- Normal high
- 68°FSeptember average
- Normal low
- 51°FSeptember average
- Precipitation
- 1.10 inmonth total
- Days with precipitation
- 70.01 inch or more
- Daylight
- 13 h 30 min to 11 h 50 minSeptember 1 to September 30
- Days at 70°F or more
- 12
- Days at 80°F or more
- 1
- Sunshine
- 76%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00456678; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Port Townsend in September?
On a given September day the chance of 0.01 inch or more is 26% on average, highest around September 30 (30%). In all, 1.10 in falls on 7 days of a normal September.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00456678.
What are the records for September in Port Townsend?
The warmest September temperature on this station's record (since 1891) is 89°F, on September 15, 1967; the coldest is 35°F, on September 25, 1908. The wettest September brought 3.18 in (1983).
Source: records: ACIS, station USC00456678. Records and recent months use complete months only.
How does September in Port Townsend 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; Port Townsend's is 68°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- Port Townsend in August73°F by day, 54°F at night
- Port Townsend in October58°F by day, 46°F at night
- Port Townsend through the yearEvery month, frost dates, records and recent years
- Washington in SeptemberThe statewide normal and the warmest and coolest places
- Pasco: Washington's warmest Septembernormal high 81°F