Geyserville, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Geyserville, a community in Sonoma County, California.
Today
99°F
Sunny
Sunny. High near 99, with temperatures falling to around 96 in the afternoon. South southeast wind 1 to 6 mph.
7-day forecast for Geyserville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 99°F | Sunny | 1 to 6 mph SSE | 0% |
| Tonight | 55°F | Partly Cloudy | 0 to 5 mph SE | 0% |
| Wednesday | 95°F | Sunny | 0 to 6 mph W | 0% |
| Wednesday Night | 55°F | Mostly Clear | 0 to 5 mph SSW | 0% |
| Thursday | 93°F | Sunny | 0 to 5 mph SSW | 0% |
| Thursday Night | 57°F | Mostly Clear | 0 to 5 mph W | 0% |
| Friday | 99°F | Sunny | 0 to 5 mph S | 0% |
| Friday Night | 59°F | Mostly Clear | 0 to 5 mph WNW | 0% |
| Saturday | 100°F | Sunny | 0 to 6 mph SSW | 0% |
| Saturday Night | 60°F | Mostly Clear | 6 mph WNW | 0% |
| Sunday | 98°F | Sunny | 2 to 7 mph SW | 0% |
| Sunday Night | 56°F | Mostly Clear | 1 to 7 mph WNW | 0% |
| Monday | 90°F | Sunny | 1 to 6 mph S | 0% |
| Monday Night | 54°F | Mostly Clear | 0 to 6 mph WSW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Geyserville (38.717, -122.903). Updated through the day.
Growing snapshot for Geyserville
Last spring frost
Feb 15
First fall frost
Dec 2
Growing season
292 days
Hardiness zone
9b
More local growing data for Geyserville: nearby ZIP 95448 weather · frost dates · planting calendar · California frost dates
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Climate data from the nearest NOAA station, Healdsburg, Ca (1.3 mi from Geyserville). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.