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Guerneville
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Guerneville Weather and climate
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
10/21
Tuesday
Sunny
86.2°F/49.1°F
10/22
Wednesday
Mist
59.5°F/46.9°F
10/23
Thursday
Partly Cloudy
68.5°F/45.1°F
10/24
Friday
Sunny
74.4°F/44.6°F
10/25
Saturday
Moderate rain
67.1°F/45.6°F
10/26
Sunday
Partly Cloudy
63.2°F/47.2°F
10/27
Monday
Partly Cloudy
70.3°F/47.9°F
