Chula Vista (CA)
September
Weather in Chula Vista, California for September 2026
Your guide to Chula Vista weather in September - trends and predictions
In general, the average temperature in Chula Vista at the beginning of September is 27.1 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 22.6 °F by the end of September.
Precipitation in Chula Vista 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
24°/18°
Temperatures
16 km/h
Avg max wind
69 %
Avg humidity
Chula Vista Weather September
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Temperatures trend during September in Chula Vista
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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 | 7 | |
| Sept. 2 |  Overcast | 27° /20° | 0 mm | 7 | |
| Sept. 3 |  Mist | 27° /20° | 0 mm | 6 | |
| Sept. 4 | Overcast | 26° /20° | 0 mm | 6 | |
| Sept. 5 | Overcast | 28° /20° | 0 mm | 7 | |
| Sept. 6 |  Cloudy | 27° /20° | 0 mm | 6 | |
| Sept. 7 | Partly cloudy | 28° /20° | 0 mm | 7 | |
| Sept. 8 | Partly cloudy | 30° /22° | 0 mm | 7 | |
| Sept. 9 | Partly cloudy | 28° /21° | 0 mm | 7 | |
| Sept. 10 | Overcast | 26° /20° | 0 mm | 6 | |
| Sept. 11 | Cloudy | 25° /19° | 0 mm | 6 | |
| Sept. 12 | Cloudy | 23° /18° | 0 mm | 5 | |
| Sept. 13 | Cloudy | 22° /17° | 0 mm | 5 | |
| Sept. 14 | Cloudy | 23° /17° | 0 mm | 5 | |
| Sept. 15 | Overcast | 23° /18° | 0 mm | 5 | |
| Sept. 16 | Overcast | 24° /18° | 0.1 mm | 6 | |
| Sept. 17 | Overcast | 22° /18° | 1.6 mm | 5 | |
| Sept. 18 | Overcast | 23° /18° | 0 mm | 6 | |
| Sept. 19 | Cloudy | 23° /17° | 0 mm | 5 | |
| Sept. 20 |  Patchy rain possible | 22° /17° | 0 mm | 5 | |
| Sept. 21 | Overcast | 21° /16° | 0.1 mm | 5 | |
| Sept. 22 | Cloudy | 24° /17° | 0 mm | 5 | |
| Sept. 23 | Partly cloudy | 25° /18° | 0 mm | 6 | |
| Sept. 24 | Partly cloudy | 24° /17° | 0 mm | 6 | |
| Sept. 25 | Partly cloudy | 23° /16° | 0 mm | 6 | |
| Sept. 26 | Overcast | 22° /16° | 0 mm | 5 | |
| 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 | |
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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 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 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 💧
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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