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Weather in Ventura County for September 2025

Your guide to Ventura County weather in September - trends and predictions
  • In general, the average temperature in Ventura County at the beginning of September is 22.9 °F. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 20.3 °F by the end of September.

  • Precipitation in Ventura County during September is a rare event, with an average of fewer than 2 rainy days.

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Average dry days
29
Dry days
Average rainy days
1
Rainy days
Average snowy days
0
Snow days
Average temperatures
21°/16°
Temperatures
Average wind speed
16 km/h
Avg max wind
Average humidity
78 %
Avg humidity

Ventura County in September average weather

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Temperatures trend during September in Ventura County

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 Partly cloudy
Partly cloudy
23° /18° 0 mm 6
Sept. 2 Cloudy
Cloudy
23° /18° 0 mm 6
Sept. 3 Cloudy
Cloudy
22° /18° 0 mm 6
Sept. 4 Partly cloudy
Partly cloudy
22° /18° 0 mm 6
Sept. 5 Cloudy
Cloudy
24° /19° 0 mm 6
Sept. 6 Overcast
Overcast
23° /20° 0 mm 6
Sept. 7 Partly cloudy
Partly cloudy
23° /19° 0 mm 7
Sept. 8 Partly cloudy
Partly cloudy
26° /20° 0 mm 7
Sept. 9 Partly cloudy
Partly cloudy
26° /19° 0 mm 7
Sept. 10 Overcast
Overcast
23° /18° 0 mm 6
Sept. 11 Cloudy
Cloudy
22° /18° 0 mm 5
Sept. 12 Cloudy
Cloudy
21° /17° 0 mm 5
Sept. 13 Mist
Mist
21° /16° 0 mm 6
Sept. 14 Mist
Mist
20° /15° 0 mm 5
Sept. 15 Mist
Mist
19° /15° 0 mm 5
Sept. 16 Mist
Mist
20° /16° 0 mm 5
Sept. 17 Overcast
Overcast
20° /15° 0 mm 5
Sept. 18 Mist
Mist
19° /15° 0 mm 5
Sept. 19 Mist
Mist
19° /15° 0 mm 5
Sept. 20 Mist
Mist
18° /15° 0 mm 4
Sept. 21 Patchy rain possible
Patchy rain possible
18° /14° 0.1 mm 4
Sept. 22 Overcast
Overcast
19° /14° 0 mm 5
Sept. 23 Mist
Mist
21° /16° 0 mm 5
Sept. 24 Mist
Mist
20° /14° 0 mm 6
Sept. 25 Mist
Mist
20° /14° 0 mm 5
Sept. 26 Cloudy
Cloudy
20° /14° 0 mm 5
Sept. 27 Sunny
Sunny
22° /15° 0 mm 5
Sept. 28 Partly cloudy
Partly cloudy
20° /15° 0 mm 5
Sept. 29 Mist
Mist
20° /15° 0 mm 6
Sept. 30 Light rain shower
Light rain shower
20° /16° 0.7 mm 5
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Important Notice
Our weather forecast for Ventura County 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 Ventura County forecast closer to your planned date for the most up-to-date weather information.

Ventura County in September - FAQ

What are the expected maximum and minimum temperatures in Ventura County during September?
During September, expect a variety of temperatures with highs around 21° and lows near 16°, suitable for diverse activities and preferences.
How much rainfall should be expected in Ventura County during September?
Rainfall in Ventura County 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 Ventura County during September?
The average wind speed in Ventura County during September is 16 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Ventura County

Explore the daily rainfall trends and prepare for Ventura Countys September weather 💧

UV exposure in Ventura County during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Location coordinates Where is Ventura County?

Get accurate weather forecasts for Ventura County, located at latitude 34.198 and longitude -119.177. Stay updated with localized weather information tailored for Ventura County.

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