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Weather in Sonoma County for May 2025

Your guide to Sonoma County weather in May - trends and predictions
  • In general, the average temperature in Sonoma County at the beginning of May is 18.7 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 22.7 °F by the end of May.

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

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Average dry days
30
Dry days
Average rainy days
1
Rainy days
Average snowy days
0
Snow days
Average temperatures
22°/8°
Temperatures
Average wind speed
15 km/h
Avg max wind
Average humidity
69 %
Avg humidity

Sonoma County in May average weather

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Temperatures trend during May in Sonoma County

See the weather trend as well as the moving average line

May weather day by day

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Date Weather Temperatures Rain UV More
May 1 Cloudy
Cloudy
22° /5° 0 mm 5
May 2 Sunny
Sunny
23° /6° 0 mm 6
May 3 Sunny
Sunny
22° /8° 0 mm 6
May 4 Moderate rain
Moderate rain
12° /5° 18.9 mm 3
May 5 Partly cloudy
Partly cloudy
15° /3° 0 mm 5
May 6 Sunny
Sunny
17° /2° 0 mm 5
May 7 Mist
Mist
20° /4° 0 mm 4
May 8 Sunny
Sunny
23° /7° 0 mm 6
May 9 Sunny
Sunny
26° /12° 0 mm 7
May 10 Sunny
Sunny
27° /11° 0 mm 7
May 11 Sunny
Sunny
25° /10° 0 mm 7
May 12 Sunny
Sunny
23° /9° 0 mm 6
May 13 Sunny
Sunny
23° /7° 0 mm 6
May 14 Sunny
Sunny
23° /7° 0 mm 6
May 15 Mist
Mist
21° /8° 0 mm 5
May 16 Fog
Fog
21° /9° 0 mm 5
May 17 Partly cloudy
Partly cloudy
22° /9° 0 mm 6
May 18 Mist
Mist
19° /7° 0 mm 4
May 19 Sunny
Sunny
23° /6° 0 mm 6
May 20 Sunny
Sunny
24° /10° 0 mm 6
May 21 Overcast
Overcast
24° /10° 0 mm 5
May 22 Sunny
Sunny
26° /8° 0 mm 7
May 23 Cloudy
Cloudy
23° /7° 0 mm 6
May 24 Partly cloudy
Partly cloudy
21° /6° 0 mm 6
May 25 Partly cloudy
Partly cloudy
20° /7° 0 mm 5
May 26 Overcast
Overcast
21° /7° 0 mm 6
May 27 Cloudy
Cloudy
22° /7° 0 mm 6
May 28 Patchy rain possible
Patchy rain possible
24° /8° 0.1 mm 5
May 29 Partly cloudy
Partly cloudy
23° /7° 0 mm 6
May 30 Partly cloudy
Partly cloudy
24° /9° 0 mm 7
May 31 Cloudy
Cloudy
25° /9° 0 mm 6
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Important Notice
Our weather forecast for Sonoma County 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 Sonoma County forecast closer to your planned date for the most up-to-date weather information.

Sonoma County in May - FAQ

What are the expected maximum and minimum temperatures in Sonoma County during May?
Enjoy moderate daytime temperatures of up to 22° and cooler nights around 8°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Sonoma County during May?
Expect minimal rainfall in Sonoma County during May, with a total of 19 mm over approximately 1 days. This minimal precipitation is unlikely to significantly impact plans.
What are the typical wind conditions in Sonoma County during May?
The average wind speed in Sonoma County during May is 15 km/h, suggesting breezy to windy conditions, depending on your activities.
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Location coordinates Where is Sonoma County?

Get accurate weather forecasts for Sonoma County, located at latitude 38.44 and longitude -122.714. Stay updated with localized weather information tailored for Sonoma County.

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