Pasadena
September
Weather in Pasadena for September 2025
Your guide to Pasadena weather in September - trends and predictions
In general, the average temperature in Pasadena at the beginning of September is 33.9 °F. As the month progressed, temperatures tended to moderately rise, reaching an average of 34.4 °F by the end of September.
The climate of Pasadena in September is notably wet, with an average of 12 rainy days, and a total of 76.5 mm of precipitation.
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Temperatures
Rain 🌧️
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18
Dry days
12
Rainy days
0
Snow days
34°/25°
Temperatures
18 km/h
Avg max wind
64 %
Avg humidity
Pasadena in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  34° | 2  34° | 3 35° | 4 32° | 5  32° | 6 34° | 7  36° |
| 8  35° | 9  34° | 10 34° | 11 32° | 12  33° | 13 35° | 14  33° |
| 15 34° | 16 33° | 17 36° | 18 35° | 19 34° | 20 34° | 21 34° |
| 22 35° | 23 34° | 24 34° | 25 34° | 26 33° | 27 34° | 28 36° |
| 29 34° | 30 36° |
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Temperatures trend during September in Pasadena
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 | Partly cloudy | 34° /25° | 5.7 mm | 8 | |
| Sept. 2 | Patchy rain possible | 34° /24° | 3.3 mm | 8 | |
| Sept. 3 | Partly cloudy | 35° /25° | 0.3 mm | 8 | |
| Sept. 4 | Light rain shower | 32° /25° | 6.5 mm | 7 | |
| Sept. 5 | Mist | 32° /25° | 3 mm | 7 | |
| Sept. 6 | Partly cloudy | 34° /25° | 0.3 mm | 8 | |
| Sept. 7 | Sunny | 36° /24° | 0 mm | 9 | |
| Sept. 8 | Cloudy | 35° /23° | 0 mm | 8 | |
| Sept. 9 | Thundery outbreaks possible | 34° /22° | 0.2 mm | 8 | |
| Sept. 10 | Cloudy | 34° /24° | 3.7 mm | 7 | |
| Sept. 11 | Partly cloudy | 32° /23° | 12.1 mm | 8 | |
| Sept. 12 | Overcast | 33° /24° | 0.1 mm | 7 | |
| Sept. 13 | Partly cloudy | 35° /23° | 0 mm | 9 | |
| Sept. 14 | Moderate or heavy rain shower | 33° /24° | 7.5 mm | 8 | |
| Sept. 15 | Moderate or heavy rain shower | 34° /24° | 1.5 mm | 8 | |
| Sept. 16 | Patchy rain possible | 33° /25° | 0.9 mm | 8 | |
| Sept. 17 | Light rain shower | 36° /26° | 0.8 mm | 8 | |
| Sept. 18 | Patchy rain possible | 35° /24° | 0.2 mm | 8 | |
| Sept. 19 | Partly cloudy | 34° /24° | 0 mm | 8 | |
| Sept. 20 | Patchy rain possible | 34° /25° | 0.1 mm | 8 | |
| Sept. 21 | Thundery outbreaks possible | 34° /25° | 0.2 mm | 8 | |
| Sept. 22 | Patchy rain possible | 35° /26° | 0 mm | 8 | |
| Sept. 23 | Overcast | 34° /25° | 10.5 mm | 8 | |
| Sept. 24 | Mist | 34° /24° | 15.2 mm | 8 | |
| Sept. 25 | Overcast | 34° /26° | 0 mm | 8 | |
| Sept. 26 | Patchy rain possible | 33° /23° | 3.7 mm | 8 | |
| Sept. 27 | Thundery outbreaks possible | 34° /24° | 0.2 mm | 8 | |
| Sept. 28 | Patchy rain possible | 36° /24° | 0 mm | 9 | |
| Sept. 29 | Patchy rain possible | 34° /24° | 0.1 mm | 8 | |
| Sept. 30 | Patchy rain possible | 36° /24° | 0.3 mm | 9 | |
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Important Notice
Our weather forecast for Pasadena 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 Pasadena forecast closer to your planned date for the most up-to-date weather information.
Pasadena in September - FAQ
What are the expected maximum and minimum temperatures in Pasadena during September?
During September, expect a variety of temperatures with highs around 34° and lows near 25°, suitable for diverse activities and preferences.
How much rainfall should be expected in Pasadena during September?
Moderate rainfall is anticipated in Pasadena during September, with a total of 76.5 mm spread over approximately 12 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Pasadena during September?
The average wind speed in Pasadena during September is 18 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Pasadena
Explore the daily rainfall trends and prepare for Pasadenas September weather 💧
UV exposure in Pasadena during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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