West Covina (CA)
September
Weather in West Covina, California for September 2026
Your guide to West Covina weather in September - trends and predictions
In general, the average temperature in West Covina at the beginning of September is 35.1 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 24.7 °F by the end of September.
Precipitation in West Covina 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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29
Dry days
1
Rainy days
0
Snow days
30°/19°
Temperatures
15 km/h
Avg max wind
59 %
Avg humidity
West Covina Weather September
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Temperatures trend during September in West Covina
See the weather trend as well as the moving average line
September weather in West Covina day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Partly cloudy | 36° /23° | 0 mm | 9 | |
| Sept. 2 |  Cloudy | 38° /26° | 0 mm | 8 | |
| Sept. 3 | Cloudy | 35° /25° | 0 mm | 8 | |
| Sept. 4 |  Sunny | 35° /22° | 0 mm | 9 | |
| Sept. 5 | Sunny | 34° /21° | 0 mm | 8 | |
| Sept. 6 | Sunny | 34° /22° | 0 mm | 8 | |
| Sept. 7 | Sunny | 34° /19° | 0 mm | 8 | |
| Sept. 8 | Sunny | 33° /20° | 0 mm | 8 | |
| Sept. 9 | Partly cloudy | 27° /16° | 0 mm | 7 | |
| Sept. 10 |  Overcast | 23° /14° | 0 mm | 5 | |
| Sept. 11 | Cloudy | 23° /15° | 0 mm | 5 | |
| Sept. 12 | Cloudy | 24° /14° | 0 mm | 5 | |
| Sept. 13 | Cloudy | 26° /15° | 0 mm | 6 | |
| Sept. 14 | Partly cloudy | 30° /16° | 0 mm | 8 | |
| Sept. 15 | Sunny | 34° /18° | 0 mm | 8 | |
| Sept. 16 | Partly cloudy | 35° /21° | 0 mm | 9 | |
| Sept. 17 | Overcast | 30° /20° | 0 mm | 7 | |
| Sept. 18 |  Patchy rain possible | 33° /22° | 3.6 mm | 7 | |
| Sept. 19 | Sunny | 30° /19° | 0 mm | 8 | |
| Sept. 20 | Sunny | 30° /17° | 0 mm | 8 | |
| Sept. 21 | Overcast | 28° /18° | 0 mm | 6 | |
| Sept. 22 | Partly cloudy | 29° /16° | 0 mm | 7 | |
| Sept. 23 | Partly cloudy | 33° /24° | 0 mm | 8 | |
| Sept. 24 | Partly cloudy | 31° /22° | 0 mm | 8 | |
| Sept. 25 | Sunny | 28° /18° | 0 mm | 7 | |
| Sept. 26 | Overcast | 20° /16° | 0 mm | 5 | |
| Sept. 27 | Cloudy | 23° /15° | 0 mm | 5 | |
| Sept. 28 | Overcast | 24° /15° | 0 mm | 5 | |
| Sept. 29 | Overcast | 24° /16° | 0 mm | 5 | |
| Sept. 30 | Cloudy | 23° /14° | 0 mm | 5 | |
| Next | |||||
Important Notice
Our weather forecast for West Covina 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 West Covina forecast closer to your planned date for the most up-to-date weather information.
Change Month
West Covina in September - FAQ
What are the expected maximum and minimum temperatures in West Covina during September?
Expect warm days with temperatures around 30°, cooling to mild conditions of 19° after sunset. Perfect for those who enjoy warm weather.
How much rainfall should be expected in West Covina during September?
Rainfall in West Covina during September is rare to nonexistent, with the total expected rainfall being less than 10 mm and approximately 1 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 West Covina during September?
The average wind speed in West Covina during September is 15 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in West Covina
Explore the daily rainfall trends and prepare for West Covinas September weather 💧
UV exposure in West Covina during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Where is West Covina?Get accurate weather forecasts for West Covina, located at latitude 34.069 and longitude -117.939. Stay updated with localized weather information tailored for West Covina.
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