Fairfield (CA)
September
Weather in Fairfield, California for September 2027
Your guide to Fairfield weather in September - trends and predictions
In general, the average temperature in Fairfield at the beginning of September is 29.6 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 27.9 °C by the end of September.
Precipitation in Fairfield during September is a rare event, with an average of fewer than 2 rainy days.
Is September a good time to visit Fairfield? check out the best time to travel to Fairfield page.
✨ Is September a good time to visit Fairfield? – Ask the AI Weatherman
Temperatures
Rain 🌧️
More
29
Dry days
1
Rainy days
0
Snow days
29°/13°
Temperatures
18 km/h
Avg max wind
62 %
Avg humidity
Fairfield Weather September
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Temperatures trend during September in Fairfield
See the weather trend as well as the moving average line
September weather in Fairfield day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Sunny | 29° /13° | 0 mm | 8 | |
| Sept. 2 | Sunny | 27° /13° | 0 mm | 7 | |
| Sept. 3 |  Partly cloudy | 31° /14° | 0.5 mm | 6 | |
| Sept. 4 | Sunny | 31° /14° | 0.1 mm | 8 | |
| Sept. 5 | Sunny | 30° /14° | 0 mm | 8 | |
| Sept. 6 | Sunny | 30° /14° | 0 mm | 8 | |
| Sept. 7 | Sunny | 30° /13° | 0 mm | 7 | |
| Sept. 8 | Sunny | 31° /12° | 0 mm | 7 | |
| Sept. 9 |  Overcast | 30° /16° | 0 mm | 5 | |
| Sept. 10 | Sunny | 27° /15° | 0 mm | 6 | |
| Sept. 11 | Sunny | 28° /14° | 0 mm | 7 | |
| Sept. 12 | Sunny | 29° /13° | 0 mm | 7 | |
| Sept. 13 | Sunny | 27° /12° | 0 mm | 7 | |
| Sept. 14 | Sunny | 30° /13° | 0 mm | 7 | |
| Sept. 15 | Overcast | 28° /13° | 0 mm | 7 | |
| Sept. 16 | Sunny | 27° /14° | 0.4 mm | 7 | |
| Sept. 17 | Overcast | 27° /13° | 0.1 mm | 6 | |
| Sept. 18 |  Light rain | 26° /13° | 7.2 mm | 6 | |
| Sept. 19 |  Cloudy | 28° /13° | 0 mm | 6 | |
| Sept. 20 | Overcast | 26° /12° | 0 mm | 4 | |
| Sept. 21 | Overcast | 27° /12° | 0 mm | 6 | |
| Sept. 22 | Sunny | 30° /12° | 0 mm | 6.8 | |
| Sept. 23 | Overcast | 36° /14° | 0 mm | 6.7 | |
| Sept. 24 | Overcast | 31° /15° | 0 mm | 6 | |
| Sept. 25 | Overcast | 25° /13° | 0 mm | 5 | |
| Sept. 26 | Overcast | 28° /12° | 0 mm | 5 | |
| Sept. 27 | Sunny | 28° /13° | 0 mm | 6.4 | |
| Sept. 28 | Partly cloudy | 24° /12° | 0 mm | 5 | |
| Sept. 29 | Overcast | 29° /13° | 0 mm | 6 | |
| Sept. 30 | Sunny | 31° /15° | 0 mm | 6 | |
| Next | |||||
Important Notice
Our weather forecast for Fairfield 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 Fairfield forecast closer to your planned date for the most up-to-date weather information.
Change Month
Fairfield in September - FAQ
What are the expected maximum and minimum temperatures in Fairfield during September?
Enjoy moderate daytime temperatures of up to 29° and cooler nights around 13°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Fairfield during September?
Rainfall in Fairfield 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 Fairfield during September?
The average wind speed in Fairfield during September is 18 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Fairfield
Explore the daily rainfall trends and prepare for Fairfields September weather 💧
Typically, Fairfield has 1 rainy days in September with a total of 8.3 mm of rainfall.
UV exposure in Fairfield during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Where is Fairfield?Get accurate weather forecasts for Fairfield, located at latitude 38.249 and longitude -122.04. Stay updated with localized weather information tailored for Fairfield.
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