Pierce County (Tacoma)
September
Weather in Pierce County for September 2025
Your guide to Pierce County weather in September - trends and predictions
In general, the average temperature in Pierce County at the beginning of September is 26.4 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 17.7 °F by the end of September.
Pierce County sees moderate rainfall in September, averaging 8 rainy days.
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22
Dry days
8
Rainy days
0
Snow days
22°/10°
Temperatures
12 km/h
Avg max wind
69 %
Avg humidity
Pierce County in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  28° | 2  28° | 3  22° | 4  23° | 5 28° | 6  28° | 7 28° |
| 8 27° | 9 26° | 10 25° | 11 19° | 12 20° | 13 21° | 14 24° |
| 15  24° | 16 25° | 17 20° | 18 18° | 19 18° | 20  19° | 21 21° |
| 22 23° | 23 21° | 24 22° | 25  19° | 26 17° | 27 18° | 28 15° |
| 29 16° | 30 17° |
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Temperatures trend during September in Pierce County
See the weather trend as well as the moving average line
September weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 | Fog | 28° /13° | 0 mm | 7 | |
| Sept. 2 | Cloudy | 28° /12° | 0 mm | 6 | |
| Sept. 3 | Light drizzle | 22° /13° | 0.9 mm | 5 | |
| Sept. 4 | Overcast | 23° /11° | 0 mm | 5 | |
| Sept. 5 | Mist | 28° /11° | 0 mm | 7 | |
| Sept. 6 | Partly cloudy | 28° /12° | 0 mm | 7 | |
| Sept. 7 | Cloudy | 28° /13° | 0 mm | 7 | |
| Sept. 8 | Partly cloudy | 27° /11° | 0 mm | 7 | |
| Sept. 9 | Mist | 26° /10° | 0 mm | 6 | |
| Sept. 10 | Cloudy | 25° /10° | 0 mm | 6 | |
| Sept. 11 | Overcast | 19° /12° | 1.1 mm | 4 | |
| Sept. 12 | Overcast | 20° /10° | 0.3 mm | 5 | |
| Sept. 13 | Mist | 21° /11° | 0 mm | 5 | |
| Sept. 14 | Mist | 24° /10° | 1.1 mm | 6 | |
| Sept. 15 | Sunny | 24° /10° | 0 mm | 6 | |
| Sept. 16 | Partly cloudy | 25° /9° | 0 mm | 6 | |
| Sept. 17 | Overcast | 20° /10° | 0 mm | 5 | |
| Sept. 18 | Overcast | 18° /12° | 0 mm | 5 | |
| Sept. 19 | Cloudy | 18° /11° | 0 mm | 4 | |
| Sept. 20 | Light rain shower | 19° /10° | 0.9 mm | 4 | |
| Sept. 21 | Sunny | 21° /8° | 0 mm | 6 | |
| Sept. 22 | Sunny | 23° /10° | 0 mm | 6 | |
| Sept. 23 | Light rain | 21° /12° | 3.7 mm | 5 | |
| Sept. 24 | Light rain | 22° /11° | 4.2 mm | 5 | |
| Sept. 25 | Moderate or heavy rain with thunder | 19° /13° | 9.3 mm | 4 | |
| Sept. 26 | Light rain shower | 17° /11° | 19.5 mm | 4 | |
| Sept. 27 | Light rain shower | 18° /11° | 7.7 mm | 4 | |
| Sept. 28 | Light rain shower | 15° /8° | 1 mm | 4 | |
| Sept. 29 | Overcast | 16° /7° | 0 mm | 4 | |
| Sept. 30 | Mist | 17° /7° | 0 mm | 4 | |
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Important Notice
Our weather forecast for Pierce County 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 Pierce County forecast closer to your planned date for the most up-to-date weather information.
Pierce County in September - FAQ
What are the expected maximum and minimum temperatures in Pierce County during September?
Enjoy moderate daytime temperatures of up to 22° and cooler nights around 10°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Pierce County during September?
Moderate rainfall is anticipated in Pierce County during September, with a total of 54.1 mm spread over approximately 8 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Pierce County during September?
The average wind speed in Pierce County during September is 12 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Pierce County
Explore the daily rainfall trends and prepare for Pierce Countys September weather 💧
UV exposure in Pierce County during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Where is Pierce County?Get accurate weather forecasts for Pierce County, located at latitude 47.253 and longitude -122.444. Stay updated with localized weather information tailored for Pierce County.
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