Tacoma (WA)
September
Weather in Tacoma, Washington for September 2026
Your guide to Tacoma weather in September - trends and predictions
Until now, September 2026 in Tacoma is slightly cooler than the historical average by 1.4 °F.
The forecast for the next days in Tacoma predicts temperatures to be around 18 °F, close to the historical average.
In general, the average temperature in Tacoma at the beginning of September is 25.6 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 17.3 °F by the end of September.
Tacoma experiences moderate rainfall in September, with an average of 8 rainy days and a total precipitation of 40.7 mm.
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Temperatures
Rain 🌧️
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22
Dry days
8
Rainy days
0
Snow days
22°/12°
Temperatures
11 km/h
Avg max wind
70 %
Avg humidity
Tacoma Weather September
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Temperatures trend during September in Tacoma
See the weather trend as well as the moving average line
September weather in Tacoma day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Overcast | 25° /13° | 0 mm | 6 | |
| Sept. 2 | Overcast | 26° /13° | 9.9 mm | 5 | |
| Sept. 3 |  Light drizzle | 23° /13° | 8.4 mm | 4 | |
| Sept. 4 | Overcast | 25° /13° | 0 mm | 6 | |
| Sept. 5 |  Mist | 28° /12° | 0.1 mm | 6 | |
| Sept. 6 |  Sunny | 27° /12° | 0 mm | 6 | |
| Sept. 7 |  Cloudy | 25° /13° | 0 mm | 5 | |
| Sept. 8 | Sunny | 25° /11° | 0 mm | 6 | |
| Sept. 9 | Overcast | 24° /12° | 0 mm | 5 | |
| Sept. 10 | Cloudy | 24° /12° | 0 mm | 5 | |
| Sept. 11 | Overcast | 19° /11° | 0.6 mm | 4 | |
| Sept. 12 | Overcast | 20° /10° | 1 mm | 4 | |
| Sept. 13 | Mist | 19° /11° | 3.8 mm | 4 | |
| Sept. 14 | Mist | 22° /11° | 0.6 mm | 4 | |
| Sept. 15 | Sunny | 23° /10° | 0.8 mm | 5 | |
| Sept. 16 | Sunny | 26° /10° | 0 mm | 6 | |
| Sept. 17 | Overcast | 22° /12° | 0 mm | 5 | |
| Sept. 18 | Overcast | 19° /11° | 0 mm | 4 | |
| Sept. 19 | Cloudy | 21° /11° | 0 mm | 5 | |
| Sept. 20 |  Light rain shower | 20° /10° | 0.4 mm | 5 | |
| Sept. 21 | Overcast | 21° /10° | 1.1 mm | 5 | |
| Sept. 22 | Overcast | 22° /12° | 0.2 mm | 3.5 | |
| Sept. 23 | Overcast | 20° /10° | 0 mm | 2.9 | |
| Sept. 24 | Overcast | 16° /10° | 8.1 mm | 1.7 | |
| Sept. 25 | Sunny | 19° /10° | 6.9 mm | 2.6 | |
| Sept. 26 | Overcast | 17° /7° | 0 mm | 4 | |
| Sept. 27 | Overcast | 19° /9° | 0 mm | 5 | |
| Sept. 28 | Sunny | 16° /8° | 0.8 mm | 4 | |
| Sept. 29 | Patchy rain possible | 17° /11° | 0.2 mm | 5 | |
| Sept. 30 | Overcast | 17° /9° | 0 mm | 4 | |
| Next | |||||
Important Notice
Our weather forecast for Tacoma in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Tacoma forecast closer to your planned date for the most up-to-date weather information.
Change Month
Tacoma in September - FAQ
What are the expected maximum and minimum temperatures in Tacoma during September?
Enjoy moderate daytime temperatures of up to 22° and cooler nights around 12°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Tacoma during September?
In September, Tacoma can expect light to moderate rainfall, totaling 40.7 mm across approximately 8 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Tacoma during September?
The average wind speed in Tacoma during September is 11 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Tacoma
Explore the daily rainfall trends and prepare for Tacomas September weather 💧
Typically, Tacoma has 8 rainy days in September with a total of 40.7 mm of rainfall.
UV exposure in Tacoma during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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