Fairfield (CA)
May
Weather in Fairfield, California for May 2026
Your guide to Fairfield weather in May - trends and predictions
In general, the average temperature in Fairfield at the beginning of May is 21.6 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 26.9 °F by the end of May.
With an average of 2 rainy days, Fairfield experiences minimal rainfall in May.
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Temperatures
Rain 🌧️
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29
Dry days
2
Rainy days
0
Snow days
25°/10°
Temperatures
20 km/h
Avg max wind
63 %
Avg humidity
Fairfield Weather May
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Temperatures trend during May in Fairfield
See the weather trend as well as the moving average line
May weather in Fairfield day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| May 1 |  Sunny | 23° /9° | 0 mm | 6 | |
| May 2 | Sunny | 20° /9° | 0 mm | 5 | |
| May 3 | Sunny | 21° /10° | 0 mm | 6 | |
| May 4 |  Moderate or heavy rain shower | 20° /7° | 13.1 mm | 5 | |
| May 5 |  Cloudy | 21° /8° | 0 mm | 6 | |
| May 6 | Sunny | 23° /9° | 0 mm | 6 | |
| May 7 | Sunny | 23° /8° | 0 mm | 6 | |
| May 8 | Sunny | 26° /10° | 0 mm | 7 | |
| May 9 | Sunny | 29° /13° | 0 mm | 7 | |
| May 10 | Sunny | 30° /10° | 0 mm | 7 | |
| May 11 | Sunny | 25° /10° | 0 mm | 6 | |
| May 12 | Sunny | 22° /10° | 3.8 mm | 6 | |
| May 13 | Sunny | 22° /9° | 0 mm | 6 | |
| May 14 | Sunny | 24° /8° | 0 mm | 6 | |
| May 15 |  Overcast | 25° /10° | 0 mm | 6 | |
| May 16 |  Partly cloudy | 26° /10° | 0 mm | 7 | |
| May 17 | Sunny | 25° /10° | 0 mm | 6 | |
| May 18 | Sunny | 24° /11° | 0 mm | 7 | |
| May 19 | Sunny | 27° /11° | 0 mm | 7 | |
| May 20 | Sunny | 28° /10° | 0 mm | 7 | |
| May 21 | Sunny | 29° /9° | 0 mm | 7 | |
| May 22 | Sunny | 26° /9° | 0 mm | 6 | |
| May 23 | Partly cloudy | 24° /8° | 0 mm | 6 | |
| May 24 | Sunny | 22° /10° | 0 mm | 6 | |
| May 25 |  Patchy rain possible | 20° /9° | 0.1 mm | 5 | |
| May 26 | Sunny | 25° /9° | 0 mm | 6 | |
| May 27 | Sunny | 26° /9° | 0 mm | 7 | |
| May 28 | Overcast | 25° /10° | 0 mm | 6 | |
| May 29 | Sunny | 30° /10° | 0 mm | 7 | |
| May 30 | Sunny | 34° /12° | 0 mm | 8 | |
| May 31 | Sunny | 28° /12° | 0 mm | 7 | |
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Important Notice
Our weather forecast for Fairfield in May 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.
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Fairfield in May - FAQ
What are the expected maximum and minimum temperatures in Fairfield during May?
Enjoy moderate daytime temperatures of up to 25° and cooler nights around 10°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Fairfield during May?
Expect minimal rainfall in Fairfield during May, with a total of 17.1 mm over approximately 2 days. This minimal precipitation is unlikely to significantly impact plans.
What are the typical wind conditions in Fairfield during May?
The average wind speed in Fairfield during May is 20 km/h, suggesting breezy to windy conditions, depending on your activities.
May rainfall patterns in Fairfield
Explore the daily rainfall trends and prepare for Fairfields May weather 💧
UV exposure in Fairfield during May
Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️
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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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