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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 9.5–16.2°C, 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 21.2–23.9°C, 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 10.9–20.7°C, 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 8.8–10.5°C, 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. 15°C / Annual rainfall: approx. 60 mm / Summer humidity: 40%–60% / Rainiest month: November
Guerneville monthly average temperature and precipitation
Month
Air temperature (°C)
Precipitation (mm)
January
9.5°C
9.1
February
8.8°C
9.2
March
9.5°C
5.7
April
12.4°C
1.5
May
16.2°C
0.9
June
21.2°C
0
July
23.9°C
0
August
21.4°C
0.1
September
20.7°C
0
October
19°C
0.9
November
10.9°C
18.9
December
10.5°C
14.5
Guerneville weather for the next seven days
10/21
Tuesday
Sunny
30.1°C/9.5°C
10/22
Wednesday
Mist
15.3°C/8.3°C
10/23
Thursday
Partly Cloudy
20.3°C/7.3°C
10/24
Friday
Sunny
23.6°C/7°C
10/25
Saturday
Moderate rain
19.5°C/7.5°C
10/26
Sunday
Partly Cloudy
17.4°C/8.5°C
10/27
Monday
Partly Cloudy
21.3°C/8.8°C
