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
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| 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.