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Potter Valley, CA Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Potter Valley, a community in Mendocino County, California.

This Afternoon
91°F
Sunny
Sunny, with a high near 91. West wind around 6 mph.

7-day forecast for Potter Valley

WhenTempForecastWindPrecip
This Afternoon 91°F Sunny 6 mph W 0%
Tonight 50°F Partly Cloudy 0 to 6 mph S 0%
Sunday 89°F Partly Sunny 0 to 5 mph SW 0%
Sunday Night 51°F Mostly Cloudy 0 to 5 mph W 0%
Monday 91°F Sunny 0 to 6 mph W 0%
Monday Night 49°F Mostly Clear 0 to 6 mph NW 0%
Tuesday 89°F Sunny 0 to 6 mph W 0%
Tuesday Night 49°F Mostly Clear then Patchy Fog 0 to 6 mph NNW 0%
Wednesday 91°F Patchy Fog then Sunny 1 to 5 mph WNW 0%
Wednesday Night 51°F Partly Cloudy 0 to 5 mph N 0%
Thursday 92°F Mostly Sunny 1 to 6 mph WSW 0%
Thursday Night 50°F Partly Cloudy 1 to 6 mph NW 1%
Friday 86°F Mostly Sunny 1 to 6 mph NW 1%
Friday Night 48°F Partly Cloudy 0 to 6 mph NW 2%

Forecast source: National Weather Service (api.weather.gov) for Potter Valley (39.317, -123.110). Updated through the day.

Growing snapshot for Potter Valley

Last spring frost
Apr 8
First fall frost
Nov 6
Growing season
211 days
Hardiness zone
9a

More local growing data for Potter Valley: nearby ZIP 95469 weather · frost dates · planting calendar · California frost dates

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Climate data from the nearest NOAA station, Potter Valley Powerhouse, Ca (3.8 mi from Potter Valley). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.