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.
Overnight
44°F
Chance Light Rain
A chance of rain before 4am, then patchy fog between 4am and 5am. Partly cloudy. Low around 44, with temperatures rising to around 46 overnight. North northwest wind around 2 mph. Chance of precipitation is 30%.
7-day forecast for Boyes Hot Springs
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 44°F | Chance Light Rain | 2 mph NNW | 25% |
| Wednesday | 69°F | Patchy Fog then Sunny | 2 to 7 mph NW | 2% |
| Wednesday Night | 44°F | Mostly Cloudy | 5 mph NNW | 2% |
| Thursday | 74°F | Patchy Fog then Mostly Sunny | 2 mph WNW | 0% |
| Thursday Night | 44°F | Mostly Clear | 1 mph NNW | 0% |
| Friday | 74°F | Sunny | 1 mph N | 0% |
| Friday Night | 45°F | Mostly Clear | 0 mph | 0% |
| Saturday | 76°F | Sunny | 2 mph E | 0% |
| Saturday Night | 46°F | Mostly Clear | 1 mph NW | 0% |
| Sunday | 75°F | Mostly Sunny | 1 mph WNW | 0% |
| Sunday Night | 47°F | Partly Cloudy | 1 mph NW | 0% |
| Monday | 73°F | Mostly Sunny | 2 mph NW | 2% |
| Monday Night | 46°F | Partly Cloudy | 2 mph NW | 2% |
| Tuesday | 73°F | Sunny | 2 mph W | 7% |
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 Nov 4, 2026.