Tacoma weather in September: Tacoma, Washington: normal highs, lows, rain and records for September
Tacoma in September has a normal high of 70°F and a normal low of 51°F, a daily mean of 61°F, falling from 74°F on the 1st to 64°F by the 30th. Measurable precipitation falls on 9 days in a normal September, 1.54 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 21°C and low of 11°C, 39 mm of precipitation in September.
- NOAA stationTacoma Narrows Airport
- Station IDUSW00094274
- Location47.27°N 122.58°W
- Elevation292 ft (89 m)
- From the center6 miles
- Population228,202
- Jan 46° 36°
- Feb 48° 37°
- Mar 53° 39°
- Apr 58° 41°
- May 65° 47°
- Jun 70° 51°
- Jul 76° 54°
- Aug 76° 54°
- Sep 70° 51°
- Oct 59° 46°
- Nov 51° 40°
- Dec 46° 36°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Tacoma in September?
The normal high is 70°F and the normal low 51°F, for a daily mean of 60.5°F. September is 4.5°F cooler than August and 8.3°F warmer than October. September is the 3rd warmest month of the year in Tacoma and the 9th wettest. Across the month the normal high falls 10°F, from 74°F on September 1 to 64°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 59°F and 62°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 | 74°F | 53°F | 23% | 9% |
| September 8 | 72°F | 53°F | 27% | 11% |
| September 15 | 70°F | 52°F | 31% | 13% |
| September 22 | 68°F | 51°F | 35% | 15% |
| September 30 | 64°F | 49°F | 41% | 18% |
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 | 74°F | 53°F | 23% | 9% | 13 h 30 min |
| September 2 | 73°F | 53°F | 24% | 9% | 13 h 20 min |
| September 3 | 73°F | 53°F | 24% | 10% | 13 h 20 min |
| September 4 | 73°F | 53°F | 25% | 10% | 13 h 20 min |
| September 5 | 73°F | 53°F | 25% | 10% | 13 h 10 min |
| September 6 | 73°F | 53°F | 26% | 10% | 13 h 10 min |
| September 7 | 72°F | 53°F | 26% | 10% | 13 h 10 min |
| September 8 | 72°F | 53°F | 27% | 11% | 13 h |
| September 9 | 72°F | 52°F | 27% | 11% | 13 h |
| September 10 | 72°F | 52°F | 28% | 11% | 13 h |
| September 11 | 71°F | 52°F | 28% | 11% | 12 h 50 min |
| September 12 | 71°F | 52°F | 29% | 12% | 12 h 50 min |
| September 13 | 71°F | 52°F | 30% | 12% | 12 h 50 min |
| September 14 | 70°F | 52°F | 30% | 12% | 12 h 40 min |
| September 15 | 70°F | 52°F | 31% | 13% | 12 h 40 min |
| September 16 | 70°F | 52°F | 32% | 13% | 12 h 40 min |
| September 17 | 69°F | 51°F | 32% | 13% | 12 h 30 min |
| September 18 | 69°F | 51°F | 33% | 13% | 12 h 30 min |
| September 19 | 69°F | 51°F | 33% | 14% | 12 h 30 min |
| September 20 | 68°F | 51°F | 34% | 14% | 12 h 20 min |
| September 21 | 68°F | 51°F | 35% | 14% | 12 h 20 min |
| September 22 | 68°F | 51°F | 35% | 15% | 12 h 20 min |
| September 23 | 67°F | 50°F | 36% | 15% | 12 h 10 min |
| September 24 | 67°F | 50°F | 37% | 15% | 12 h 10 min |
| September 25 | 67°F | 50°F | 37% | 16% | 12 h 10 min |
| September 26 | 66°F | 50°F | 38% | 16% | 12 h |
| September 27 | 66°F | 50°F | 39% | 16% | 12 h |
| September 28 | 65°F | 49°F | 39% | 17% | 12 h |
| September 29 | 65°F | 49°F | 40% | 17% | 11 h 50 min |
| September 30 | 64°F | 49°F | 41% | 18% | 11 h 50 min |
- Normal high
- 70°FSeptember average
- Normal low
- 51°FSeptember average
- Precipitation
- 1.54 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
- 13
- Days at 80°F or more
- 2
- Sunshine
- 74%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00094274; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Tacoma in September?
On a given September day the chance of 0.01 inch or more is 31% on average, highest around September 30 (41%). In all, 1.54 in falls on 9 days of a normal September.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00094274.
What are the records for September in Tacoma?
The warmest September temperature on this station's record (since 1999) is 89°F, on September 5, 2024; the coldest is 40°F, on September 30, 2019. The wettest September brought 5.23 in (2010).
The September mean against the 1991-2020 normal of 60.5°F: 2021 59.3°F (−1.2), 2022 64.2°F (+3.7), 2023 61.2°F (+0.7), 2024 63.5°F (+3.0), 2025 63.5°F (+3.0), 2026 60.0°F (−0.5). 4 of 6 ran warmer than normal.
| September | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 59.3°F | −1.2°F | 3.82 in |
| 2022 | 64.2°F | +3.7°F | 0.12 in |
| 2023 | 61.2°F | +0.7°F | 2.50 in |
| 2024 | 63.5°F | +3.0°F | 1.64 in |
| 2025 | 63.5°F | +3.0°F | – |
| 2026 | 60.0°F | −0.5°F | 1.67 in |
Source: records: ACIS, station USW00094274; recent months: ACIS, station USW00094274. Records and recent months use complete months only.
How does September in Tacoma 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; Tacoma's is 70°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.