Guerneville (CA) Temperature by Month

This graph shows the average minimum and maximum temperatures throughout the year in Guerneville (California), the United States of America. The minimum temperature is often recorded between 4 AM and 6 AM, while the highest temperature is usually reached at 3 PM. During this time the sun's heating effect is the strongest.

Temperature patterns do vary with the seasons. In winter, the time of minimum and maximum temperatures can shift slightly compared to summer.

• On average, the warmest month is July with 28°C.
• On average, the coolest month is December with 14°C.
• The average annual maximum temperature is 22°C.
• The average annual minimum temperature is 7°C.