Average Monthly Sunshine hours in Guerneville (CA)

This graph shows the average number of hours per month that Guerneville receives direct sunlight. The numbers are calculated over a 30-year period to provide a reliable average.

• On average, May is the sunniest month with 310 hours of sunshine.
• December has on average the lowest amount of sunshine with 160 hours.

Forecast: is it sunny in Guerneville (CA)?

Sat   Nov 23

15°C | 6°C

SW 11 km/h

1.4 mm

partly cloudy and rain

hourly forecast

Sun   Nov 24

14°C | 5°C

S 14 km/h

22 mm

overcast and heavy rain

hourly forecast

Mon   Nov 25

14°C | 9°C

NE 4 km/h

6.5 mm

overcast and rain

hourly forecast

5-Day Forecast 10-Day Forecast