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Ventura County (Oxnard)
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United States weather

Weather in Ventura County, California for September 2025

Your guide to Ventura County weather in September - trends and predictions

    Temperatures

  • Until now, September 2025 in Ventura County has been nearly identical to the historical average, with a temperature of 22.9 °F (showing only a slight deviation of 0.2 °F).

  • The forecast for the next days in Ventura County predicts temperatures to be around 23 °F, close to the historical average.

  • In general, the average temperature in Ventura County at the beginning of September is 23.7 °F. As the month progressed, temperatures tended to moderately fall, reaching an average of 21.9 °F by the end of September.

    • Rain 🌧️

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

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
30
Dry days
Average rainy days
0
Rainy days
Average snowy days
0
Snow days
Average temperatures
21°/17°
Temperatures
Average wind speed
16 km/h
Avg max wind
Average humidity
76 %
Avg humidity

Ventura County Weather September

Move between months or click on a day
August
October
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Partly cloudy
24°
2
Cloudy
24°
3
Sunny
25°
4
Partly cloudy
23°
5
Cloudy
24°
6
Overcast
23°
7
Partly cloudy
23°
8
Partly cloudy
25°
9
Partly cloudy
24°
10
Overcast
22°
11
Cloudy
21°
12
Cloudy
21°
13
Mist
20°
14
Mist
21°
15
Mist
21°
16
Mist
21°
17
Cloudy
25°
18
Moderate rain
26°
19
Overcast
23°
20
Partly cloudy
23°
21
Partly cloudy
23°
22
Sunny
24°
23
Sunny
23°
24
Sunny
23°
25
Sunny
22°
26
Sunny
21°
27
Sunny
21°
28
Sunny
20°
29
Sunny
23°
30
Sunny
23°

Temperatures trend during September in Ventura County

See the weather trend as well as the moving average line

September weather in Ventura County day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
Sept. 1 Partly cloudy
Partly cloudy
 24° /18° 0 mm 6
Sept. 2 Cloudy
Cloudy
 24° /18° 0 mm 6
Sept. 3 Sunny
Sunny
 25° /19° 0 mm 6
Sept. 4 Partly cloudy
Partly cloudy
 23° /18° 0 mm 6
Sept. 5 Cloudy
Cloudy
 24° /19° 0 mm 6
Sept. 6 Overcast
Overcast
 23° /19° 0 mm 6
Sept. 7 Partly cloudy
Partly cloudy
 23° /18° 0 mm 6
Sept. 8 Partly cloudy
Partly cloudy
 25° /19° 0 mm 7
Sept. 9 Partly cloudy
Partly cloudy
 24° /19° 0 mm 7
Sept. 10 Overcast
Overcast
 22° /17° 0 mm 5
Sept. 11 Cloudy
Cloudy
 21° /17° 0 mm 5
Sept. 12 Cloudy
Cloudy
 21° /17° 0 mm 5
Sept. 13 Mist
Mist
 20° /16° 0 mm 5
Sept. 14 Mist
Mist
 21° /16° 0 mm 5
Sept. 15 Mist
Mist
 21° /16° 0 mm 5
Sept. 16 Mist
Mist
 21° /16° 0 mm 5
Sept. 17 Cloudy
Cloudy
 25° /19° 0 mm 1.7
Sept. 18 Moderate rain
Moderate rain
 26° /18° 8.1 mm 1
Sept. 19 Overcast
Overcast
 23° /20° 0 mm 1.6
Sept. 20 Partly cloudy
Partly cloudy
 23° /20° 0 mm 1.8
Sept. 21 Partly cloudy
Partly cloudy
 23° /20° 0 mm 0
Sept. 22 Sunny
Sunny
 24° /20° 0 mm 6
Sept. 23 Sunny
Sunny
 23° /20° 0 mm 6
Sept. 24 Sunny
Sunny
 23° /19° 0 mm 6
Sept. 25 Sunny
Sunny
 22° /19° 0 mm 6
Sept. 26 Sunny
Sunny
 21° /18° 0 mm 5
Sept. 27 Sunny
Sunny
 21° /18° 0 mm 5
Sept. 28 Sunny
Sunny
 20° /17° 0 mm 5
Sept. 29 Sunny
Sunny
 23° /19° 0 mm 6
Sept. 30 Sunny
Sunny
 23° /19° 0 mm 6
Next
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.
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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 17°, 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 0 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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