Cypress (CA)
September
Weather in Cypress, California for September 2026
Your guide to Cypress weather in September - trends and predictions
Heat Advisory - See hour by hour.
The forecast for the next days in Cypress predicts a temperature of 25.6 °F, which is cooler than the historical average.
In general, the average temperature in Cypress at the beginning of September is 32 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 23.6 °F by the end of September.
Precipitation in Cypress during September is a rare event, with an average of fewer than 2 rainy days.
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Temperatures
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29
Dry days
1
Rainy days
0
Snow days
28°/19°
Temperatures
17 km/h
Avg max wind
70 %
Avg humidity
Cypress Weather September
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Temperatures trend during September in Cypress
See the weather trend as well as the moving average line
September weather in Cypress day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Partly cloudy | 31° /18° | 0 mm | 11 | |
| Sept. 2 |  Cloudy | 32° /19° | 0 mm | 11 | |
| Sept. 3 | Partly cloudy | 33° /20° | 0 mm | 10 | |
| Sept. 4 | Partly cloudy | 30° /19° | 0 mm | 10 | |
| Sept. 5 | Partly cloudy | 33° /17° | 0 mm | 10 | |
| Sept. 6 | Cloudy | 31° /19° | 4.2 mm | 7 | |
| Sept. 7 | Partly cloudy | 34° /19° | 0 mm | 8 | |
| Sept. 8 |  Patchy rain possible | 31° /22° | 0.4 mm | 9.1 | |
| Sept. 9 |  Sunny | 30° /25° | 0.1 mm | 9.2 | |
| Sept. 10 | Sunny | 29° /24° | 0 mm | 9.1 | |
| Sept. 11 | Sunny | 27° /23° | 0 mm | 8.8 | |
| Sept. 12 | Sunny | 25° /22° | 0 mm | 6 | |
| Sept. 13 | Sunny | 25° /21° | 0 mm | 6 | |
| Sept. 14 | Sunny | 25° /21° | 0 mm | 6 | |
| Sept. 15 | Sunny | 24° /21° | 0 mm | 6 | |
| Sept. 16 | Sunny | 24° /21° | 0 mm | 6 | |
| Sept. 17 | Sunny | 25° /21° | 0 mm | 6 | |
| Sept. 18 | Sunny | 25° /21° | 0 mm | 6 | |
| Sept. 19 | Sunny | 24° /20° | 0 mm | 6 | |
| Sept. 20 | Sunny | 22° /20° | 0 mm | 6 | |
| Sept. 21 | Sunny | 23° /19° | 0 mm | 6 | |
| Sept. 22 |  Mist | 25° /18° | 0 mm | 7 | |
| Sept. 23 | Partly cloudy | 30° /20° | 0 mm | 8 | |
| Sept. 24 | Partly cloudy | 27° /19° | 0 mm | 8 | |
| Sept. 25 | Mist | 24° /18° | 0 mm | 6 | |
| Sept. 26 |  Overcast | 21° /19° | 0 mm | 1 | |
| Sept. 27 | Overcast | 23° /18° | 0 mm | 5 | |
| Sept. 28 | Cloudy | 24° /18° | 0 mm | 6 | |
| Sept. 29 | Overcast | 23° /18° | 0 mm | 3 | |
| Sept. 30 | Overcast | 23° /17° | 0 mm | 5 | |
| Next | |||||
Important Notice
Our weather forecast for Cypress 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 Cypress forecast closer to your planned date for the most up-to-date weather information.
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Cypress in September - FAQ
What are the expected maximum and minimum temperatures in Cypress during September?
During September, expect a variety of temperatures with highs around 28° and lows near 19°, suitable for diverse activities and preferences.
How much rainfall should be expected in Cypress during September?
Expect minimal rainfall in Cypress during September, with a total of 11.9 mm over approximately 1 days. This minimal precipitation is unlikely to significantly impact plans.
What are the typical wind conditions in Cypress during September?
The average wind speed in Cypress during September is 17 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Cypress
Explore the daily rainfall trends and prepare for Cypresss September weather 💧
Typically, Cypress has 1 rainy days in September with a total of 11.9 mm of rainfall.
UV exposure in Cypress during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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