When to go · Guerneville
Guerneville, month by month
The best months for Guerneville: May, Jun, Jul, Aug, Sep, Oct. Months to avoid: Jan, Feb, Mar.
Month by month
- JanuaryAvoidListed as a month to avoid: Jan–Mar (rain, some seasonal closures); summer weekends if you want quiet.14 °C (57 °F) / 4 °C (39 °F), 12 rain days57 °F (14 °C) / 39 °F (4 °C), 12 rain daysCrowds: Low
- FebruaryAvoidListed as a month to avoid: Jan–Mar (rain, some seasonal closures); summer weekends if you want quiet.16 °C (61 °F) / 5 °C (41 °F), 11 rain days61 °F (16 °C) / 41 °F (5 °C), 11 rain daysCrowds: Low · 1 festival or holiday
- MarchAvoidListed as a month to avoid: Jan–Mar (rain, some seasonal closures); summer weekends if you want quiet.18 °C (64 °F) / 6 °C (43 °F), 10 rain days64 °F (18 °C) / 43 °F (6 °C), 10 rain daysCrowds: Medium · 2 festivals or holidays
- AprilGoodOutside the best window (May–Oct for river weather; Sep–Oct for warm days with fewer crowds). Across United States: Good month for the Southwest, Washington cherry blossoms, the South; mountain roads still closed.21 °C (70 °F) / 7 °C (45 °F), 7 rain days70 °F (21 °C) / 45 °F (7 °C), 7 rain daysCrowds: Medium · 1 festival or holiday
- MayGreatInside Guerneville's best window: May–Oct for river weather; Sep–Oct for warm days with fewer crowds.24 °C (75 °F) / 9 °C (48 °F), 4 rain days75 °F (24 °C) / 48 °F (9 °C), 4 rain daysCrowds: Medium · 1 festival or holiday
- JuneGreatInside Guerneville's best window: May–Oct for river weather; Sep–Oct for warm days with fewer crowds.28 °C (82 °F) / 11 °C (52 °F), 2 rain days82 °F (28 °C) / 52 °F (11 °C), 2 rain daysCrowds: High
- JulyGreatInside Guerneville's best window: May–Oct for river weather; Sep–Oct for warm days with fewer crowds.30 °C (86 °F) / 12 °C (54 °F), 0 rain days86 °F (30 °C) / 54 °F (12 °C), 0 rain daysCrowds: High · 1 festival or holiday
- AugustGreatInside Guerneville's best window: May–Oct for river weather; Sep–Oct for warm days with fewer crowds.30 °C (86 °F) / 12 °C (54 °F), 1 rain days86 °F (30 °C) / 54 °F (12 °C), 1 rain daysCrowds: High
- SeptemberGreatInside Guerneville's best window: May–Oct for river weather; Sep–Oct for warm days with fewer crowds.29 °C (84 °F) / 11 °C (52 °F), 2 rain days84 °F (29 °C) / 52 °F (11 °C), 2 rain daysCrowds: Medium · 1 festival or holiday
- OctoberGreatInside Guerneville's best window: May–Oct for river weather; Sep–Oct for warm days with fewer crowds.25 °C (77 °F) / 8 °C (46 °F), 5 rain days77 °F (25 °C) / 46 °F (8 °C), 5 rain daysCrowds: Medium
- NovemberMixedOutside the best window (May–Oct for river weather; Sep–Oct for warm days with fewer crowds). Across United States: Quiet between holidays; Thanksgiving week is the busiest travel period of the year.18 °C (64 °F) / 6 °C (43 °F), 10 rain days64 °F (18 °C) / 43 °F (6 °C), 10 rain daysCrowds: Medium · 1 festival or holiday
- DecemberMixedOutside the best window (May–Oct for river weather; Sep–Oct for warm days with fewer crowds). Across United States: Holiday lights in New York, ski season opens; flights and hotels peak around Christmas and New Year.14 °C (57 °F) / 4 °C (39 °F), 12 rain days57 °F (14 °C) / 39 °F (4 °C), 12 rain daysCrowds: High · 1 festival or holiday
Compare two months
Weather, crowds and prices for any two months in Guerneville, side by side.
Verdict
May: Great
Jun: Great
Daytime high
May: 24 °C (75 °F)75 °F (24 °C)
Jun: 28 °C (82 °F)82 °F (28 °C)
Night low
May: 9 °C (48 °F)48 °F (9 °C)
Jun: 11 °C (52 °F)52 °F (11 °C)
Rain days
May: 4
Jun: 2 (better)
Crowds
May: Medium
Jun: High
Prices
May: Medium
Jun: High
Festivals listed
May: 1
Jun: 0
May: Inside Guerneville's best window: May–Oct for river weather; Sep–Oct for warm days with fewer crowds.
June: Inside Guerneville's best window: May–Oct for river weather; Sep–Oct for warm days with fewer crowds.
Guerneville: figures are long-term averages from this guide, not a forecast.