Chula Vista (CA)
September
Weather in Chula Vista, California for September 2026
Your guide to Chula Vista weather in September - trends and predictions
So far, September 2026 in Chula Vista shows a warmer trend than usual by 2.7 °F.
Expect cooler weather in the next days in Chula Vista with the forecast suggesting a temperature of 26.2 °F, lower than the historical average.
In general, the average temperature in Chula Vista at the beginning of September is 28 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 24 °F by the end of September.
With an average of 2 rainy days, Chula Vista experiences minimal rainfall in September.
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Temperatures
Rain 🌧️
More
28
Dry days
2
Rainy days
0
Snow days
24°/18°
Temperatures
16 km/h
Avg max wind
72 %
Avg humidity
Chula Vista Weather September
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Temperatures trend during September in Chula Vista
See the weather trend as well as the moving average line
September weather in Chula Vista day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Partly cloudy | 27° /19° | 0 mm | 8 | |
| Sept. 2 |  Sunny | 28° /19° | 0 mm | 8 | |
| Sept. 3 | Sunny | 27° /19° | 0 mm | 7 | |
| Sept. 4 | Sunny | 26° /19° | 0 mm | 8 | |
| Sept. 5 | Sunny | 28° /19° | 0 mm | 7 | |
| Sept. 6 |  Cloudy | 29° /20° | 0.1 mm | 6 | |
| Sept. 7 | Partly cloudy | 31° /21° | 0 mm | 7 | |
| Sept. 8 | Partly cloudy | 33° /22° | 0 mm | 8 | |
| Sept. 9 | Partly cloudy | 29° /21° | 0 mm | 7 | |
| Sept. 10 |  Overcast | 28° /21° | 0 mm | 7 | |
| Sept. 11 | Cloudy | 26° /20° | 0 mm | 7 | |
| Sept. 12 | Overcast | 24° /18° | 0 mm | 5 | |
| Sept. 13 | Sunny | 28° /22° | 0 mm | 9.2 | |
| Sept. 14 | Sunny | 26° /21° | 0 mm | 9.2 | |
| Sept. 15 | Sunny | 26° /20° | 0 mm | 8.9 | |
| Sept. 16 | Sunny | 27° /20° | 0 mm | 8.7 | |
| Sept. 17 | Sunny | 28° /20° | 0 mm | 7 | |
| Sept. 18 | Sunny | 28° /21° | 0 mm | 7 | |
| Sept. 19 | Sunny | 27° /21° | 0 mm | 7 | |
| Sept. 20 | Sunny | 26° /20° | 0 mm | 7 | |
| Sept. 21 | Sunny | 24° /19° | 0 mm | 6 | |
| Sept. 22 | Sunny | 24° /18° | 0 mm | 6 | |
| Sept. 23 | Sunny | 24° /18° | 0 mm | 6 | |
| Sept. 24 | Sunny | 27° /19° | 0 mm | 7 | |
| Sept. 25 | Sunny | 27° /19° | 0 mm | 7 | |
| Sept. 26 | Sunny | 25° /19° | 0 mm | 6 | |
| Sept. 27 | Partly cloudy | 22° /15° | 0 mm | 5 | |
| Sept. 28 | Cloudy | 23° /16° | 0 mm | 5 | |
| Sept. 29 | Cloudy | 22° /16° | 0 mm | 5 | |
| Sept. 30 |  Patchy rain possible | 22° /16° | 1.5 mm | 5 | |
| Next | |||||
Important Notice
Our weather forecast for Chula Vista 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 Chula Vista forecast closer to your planned date for the most up-to-date weather information.
Change Month
Chula Vista in September - FAQ
What are the expected maximum and minimum temperatures in Chula Vista during September?
During September, expect a variety of temperatures with highs around 24° and lows near 18°, suitable for diverse activities and preferences.
How much rainfall should be expected in Chula Vista during September?
Rainfall in Chula Vista during September is rare to nonexistent, with the total expected rainfall being less than 10 mm and approximately 2 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 Chula Vista during September?
The average wind speed in Chula Vista during September is 16 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Chula Vista
Explore the daily rainfall trends and prepare for Chula Vistas September weather 💧
Typically, Chula Vista has 2 rainy days in September with a total of 3.3 mm of rainfall.
UV exposure in Chula Vista during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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