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Guerneville

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Guerneville Weather, Climate and Best Time to Visit

Data source：Meteostat
Update date：2025-09

Guerneville year round climate

  • Spring (March–May): Average 49–61°F, mild and comfortable climate with minimal rainfall. Common activities: Hiking, biking, flower viewing. Suggested clothing: Light jacket, long-sleeved shirt, comfortable shoes.
  • Summer (June–August): Average 70–75°F, dry and warm climate with abundant sunshine. Common activities: Swimming, camping, picnicking, water activities. Suggested clothing: Light and breathable clothing, sun hat, sunscreen.
  • Autumn (September–November): Average 51–69°F, cool and comfortable climate, with more rainfall in November. Common activities: Leaf peeping, winery tours, hiking. Suggested clothing: Light jacket or sweater, comfortable shoes.
  • Winter (December–February): Average 47–50°F, mild climate with occasional rainfall. Common activities: Hot spring bathing, indoor activities, trying local cuisine. Suggested clothing: Warm jacket, sweater, scarf, hat.

Guerneville climatological average

Annual average temperature: approx. 59.0°F / Annual rainfall: approx. 60 mm / Summer humidity: 40%–60% / Rainiest month: November

Guerneville monthly average temperature and precipitation

Month
Air temperature (°F)
Precipitation (mm)
January
49.1°F
9.1
February
47.8°F
9.2
March
49.1°F
5.7
April
54.3°F
1.5
May
61.2°F
0.9
June
70.2°F
0
July
75°F
0
August
70.5°F
0.1
September
69.3°F
0
October
66.2°F
0.9
November
51.6°F
18.9
December
50.9°F
14.5

Guerneville weather for the next seven days

1/26
Monday
Sunny
63.3°F/37.6°F
1/27
Tuesday
Cloudy
50.5°F/40.8°F
1/28
Wednesday
Partly Cloudy
63.3°F/44.1°F
1/29
Thursday
Sunny
66.2°F/42.7°F
1/30
Friday
Partly Cloudy
66.4°F/45.4°F
1/31
Saturday
Sunny
66.3°F/45.3°F
2/1
Sunday
Overcast
66.9°F/45.8°F

Guerneville Frequently Asked Questions and Useful Information for Travel

What is the best time to visit?

The best time to visit is in spring and autumn, when the local weather and temperatures are moderate, suitable for all types of activities.

What are the must-see attractions?

Must-see attractions include Wheeling Water Adventure Park, Frankie's Theme Park, HL Henry's Submarine Museum, Tanger Outlet Shopping Center and numerous golf clubs.