Whittier
September
Weather in Whittier for September 2025
Your guide to Whittier weather in September - trends and predictions
In general, the average temperature in Whittier at the beginning of September is 35.1 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 29.1 °F by the end of September.
Precipitation in Whittier during September is a rare event, with an average of fewer than 2 rainy days.
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Temperatures
Rain 🌧️
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30
Dry days
0
Rainy days
0
Snow days
29°/20°
Temperatures
17 km/h
Avg max wind
54 %
Avg humidity
Whittier in September average weather
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| Sun. | Mon. | Tue. | Wed. | Thu. | Fri. | Sat. |
|---|---|---|---|---|---|---|
| 1  31° | 2 33° | 3 33° | 4 34° | 5 37° | 6 39° | |
| 7 39° | 8 39° | 9 39° | 10 34° | 11 27° | 12 26° | 13  26° |
| 14 26° | 15  24° | 16  22° | 17 22° | 18  21° | 19 21° | 20 21° |
| 21 23° | 22 30° | 23 32° | 24 30° | 25 30° | 26 27° | 27 27° |
| 28 28° | 29 30° | 30 32° |
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Temperatures trend during September in Whittier
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 | Sunny | 31° /22° | 0 mm | 8 | |
| Sept. 2 | Sunny | 33° /23° | 0 mm | 8 | |
| Sept. 3 | Sunny | 33° /24° | 0 mm | 8 | |
| Sept. 4 | Sunny | 34° /24° | 0 mm | 8 | |
| Sept. 5 | Sunny | 37° /26° | 0 mm | 9 | |
| Sept. 6 | Sunny | 39° /27° | 0 mm | 9 | |
| Sept. 7 | Sunny | 39° /27° | 0 mm | 9 | |
| Sept. 8 | Sunny | 39° /30° | 0 mm | 9 | |
| Sept. 9 | Sunny | 39° /31° | 0 mm | 9 | |
| Sept. 10 | Sunny | 34° /25° | 0 mm | 8 | |
| Sept. 11 | Sunny | 27° /21° | 0 mm | 7 | |
| Sept. 12 | Sunny | 26° /19° | 0 mm | 7 | |
| Sept. 13 | Cloudy | 26° /19° | 0 mm | 6 | |
| Sept. 14 | Sunny | 26° /19° | 0 mm | 7 | |
| Sept. 15 | Partly cloudy | 24° /18° | 0 mm | 6 | |
| Sept. 16 | Patchy rain possible | 22° /18° | 0.2 mm | 5 | |
| Sept. 17 | Sunny | 22° /15° | 0 mm | 6 | |
| Sept. 18 | Overcast | 21° /15° | 0 mm | 5 | |
| Sept. 19 | Cloudy | 21° /16° | 0 mm | 5 | |
| Sept. 20 | Overcast | 21° /15° | 0 mm | 5 | |
| Sept. 21 | Overcast | 23° /15° | 0 mm | 5 | |
| Sept. 22 | Partly cloudy | 30° /17° | 0 mm | 8 | |
| Sept. 23 | Partly cloudy | 32° /18° | 0 mm | 8 | |
| Sept. 24 | Partly cloudy | 30° /17° | 0 mm | 8 | |
| Sept. 25 | Partly cloudy | 30° /17° | 0 mm | 8 | |
| Sept. 26 | Partly cloudy | 27° /16° | 0 mm | 7 | |
| Sept. 27 | Cloudy | 27° /15° | 0 mm | 6 | |
| Sept. 28 | Partly cloudy | 28° /16° | 0 mm | 7 | |
| Sept. 29 | Partly cloudy | 30° /16° | 0 mm | 8 | |
| Sept. 30 | Partly cloudy | 32° /17° | 0 mm | 8 | |
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Important Notice
Our weather forecast for Whittier 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 Whittier forecast closer to your planned date for the most up-to-date weather information.
Whittier in September - FAQ
What are the expected maximum and minimum temperatures in Whittier during September?
During September, expect a variety of temperatures with highs around 29° and lows near 20°, suitable for diverse activities and preferences.
How much rainfall should be expected in Whittier during September?
Rainfall in Whittier during September is rare to nonexistent, with the total expected rainfall being less than 10 mm and approximately 0 days seeing any precipitation. Planning without the concern for rain is generally straightforward during this very dry period.
What are the typical wind conditions in Whittier during September?
The average wind speed in Whittier during September is 17 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Whittier
Explore the daily rainfall trends and prepare for Whittiers September weather 💧
UV exposure in Whittier during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Where is Whittier?Get accurate weather forecasts for Whittier, located at latitude 33.979 and longitude -118.033. Stay updated with localized weather information tailored for Whittier.
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