Guerneville, California Climate
United States
Pop. 4,534 Elev. 13 m / 43 ft
TZ: America/Los_Angeles (UTC-7) ·
Guerneville is largely arid, with warm summers peaking at 81°F (27°C) in August and cool winters around 39°F (4°C) in January. Precipitation occurs on roughly 32 days per year (28.1 in / 715 mm total). The city averages 212 sunny days per year and around 21 thunderstorm days. Ocean water temperatures reach 59°F (15°C) in summer.
| Temperature | 81°F (27°C) high | 39°F (4°C) low |
| Feels like | 83°F (28°C) high | 39°F (4°C) low |
| Rain | 32 days | 28.1 in (715 mm) /yr |
| Sky | 212 sunny | 21 stormy |
| Wind | 3.5 mph (1.6 m/s) avg |
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Explore on the MapMonthly Climate Chart
Best months to visit: Jan, Apr, May, Jun, Jul, Aug, Sep, Oct
Sky & Air by Month
Cloud cover (%)
31
Jan 61
Feb 57
Mar 47
Apr 21
May 17
Jun 28
Jul 18
Aug 36
Sep 37
Oct 61
Nov 56
Dec Humidity (%)
68
Jan 78
Feb 75
Mar 73
Apr 58
May 60
Jun 68
Jul 58
Aug 68
Sep 75
Oct 84
Nov 86
Dec Weather Days by Month
Water Temperatures
Cities with Similar Climate
Find similar cities on the map →Nearby Cities
Nearby
Commercial airport 10 mi Charles M. Schulz Sonoma County Airport (STS)
Ski resort 153 mi Sugar Bowl Resort
National park 26 mi Jack London State Historic Park
Mountain peak
(6,113 ft) 55 mi Goat Mountain
Hospital 11 mi Healdsburg District Hospital
Hiking trail 17 mi House Creek Loop
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Monthly Weather Data
↑ See chart| Month | Avg High | Avg Low | Rainfall | Snowfall | Sunny Days |
|---|---|---|---|---|---|
| January | 62°F 16°C | 39°F 4°C | 1.0 in 26 mm | — | 21 |
| February | 59°F 15°C | 43°F 6°C | 8.3 in 210 mm | — | 7 |
| March | 61°F 16°C | 45°F 7°C | 4.5 in 115 mm | — | 11 |
| April | 66°F 19°C | 47°F 8°C | 0.6 in 14 mm | — | 13 |
| May | 74°F 23°C | 52°F 11°C | 0.1 in 4 mm | — | 26 |
| June | 76°F 24°C | 55°F 13°C | 0.0 in 0 mm | — | 28 |
| July | 75°F 24°C | 56°F 13°C | 0.0 in 1 mm | — | 24 |
| August | 81°F 27°C | 58°F 15°C | 0.0 in 0 mm | — | 27 |
| September | 78°F 26°C | 58°F 15°C | 0.5 in 12 mm | — | 17 |
| October | 70°F 21°C | 51°F 10°C | 1.8 in 46 mm | — | 18 |
| November | 64°F 18°C | 48°F 9°C | 4.3 in 110 mm | — | 8 |
| December | 57°F 14°C | 44°F 6°C | 6.9 in 176 mm | — | 12 |
Weather Days by Month
↑ See chart| Month | Sunny Days | Storm Days |
|---|---|---|
| January | 21 | 0 |
| February | 7 | 4 |
| March | 11 | 6 |
| April | 13 | 1 |
| May | 26 | 0 |
| June | 28 | 0 |
| July | 24 | 0 |
| August | 27 | 0 |
| September | 17 | 0 |
| October | 18 | 1 |
| November | 8 | 3 |
| December | 12 | 6 |
Water Temperatures Data
↑ See chart| Month | Ocean Avg High | Lake Avg High |
|---|---|---|
| January | 52°F 11°C | 43°F 6°C |
| February | 51°F 11°C | 43°F 6°C |
| March | 51°F 11°C | 47°F 8°C |
| April | 51°F 11°C | 54°F 12°C |
| May | 49°F 9°C | 60°F 15°C |
| June | 50°F 10°C | 67°F 19°C |
| July | 53°F 11°C | 70°F 21°C |
| August | 55°F 13°C | 71°F 22°C |
| September | 58°F 14°C | 68°F 20°C |
| October | 59°F 15°C | 59°F 15°C |
| November | 55°F 13°C | 54°F 12°C |
| December | 55°F 13°C | 48°F 9°C |