Boyes Hot Springs, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Boyes Hot Springs, a community in Sonoma County, California.
Today
89°F
Areas Of Fog then Sunny
Areas of fog before 9am. Sunny. High near 89, with temperatures falling to around 85 in the afternoon. Southwest wind 0 to 7 mph.
7-day forecast for Boyes Hot Springs
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 89°F | Areas Of Fog then Sunny | 0 to 7 mph SW | 0% |
| Tonight | 51°F | Partly Cloudy then Areas Of Fog | 0 to 3 mph W | 0% |
| Sunday | 82°F | Areas Of Fog then Mostly Cloudy | 0 to 3 mph SSW | 0% |
| Sunday Night | 50°F | Mostly Cloudy then Areas Of Fog | 2 mph SW | 2% |
| Monday | 84°F | Areas Of Fog then Mostly Sunny | 0 to 6 mph SW | 0% |
| Monday Night | 50°F | Partly Cloudy then Areas Of Fog | 0 to 6 mph SW | 0% |
| Tuesday | 85°F | Areas Of Fog then Sunny | 0 to 6 mph WSW | 0% |
| Tuesday Night | 50°F | Mostly Clear then Patchy Fog | 0 to 6 mph WNW | 0% |
| Wednesday | 94°F | Areas Of Fog then Sunny | 0 to 5 mph SSW | 0% |
| Wednesday Night | 55°F | Mostly Clear | 0 to 5 mph NW | 0% |
| Thursday | 94°F | Sunny | 0 to 6 mph WSW | 0% |
| Thursday Night | 54°F | Mostly Clear | 0 to 6 mph NW | 0% |
| Friday | 87°F | Mostly Sunny | 0 to 6 mph WSW | 1% |
| Friday Night | 52°F | Partly Cloudy | 0 to 6 mph SW | 1% |
Forecast source: National Weather Service (api.weather.gov) for Boyes Hot Springs (38.313, -122.489). Updated through the day.
Growing snapshot for Boyes Hot Springs
Last spring frost
Mar 2
First fall frost
Nov 27
Growing season
270 days
Hardiness zone
9b
More local growing data for Boyes Hot Springs: nearby ZIP 95431 weather · frost dates · planting calendar · California frost dates
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Climate data from the nearest NOAA station, Sonoma, Ca (4.5 mi from Boyes Hot Springs). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.