Healdsburg, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Healdsburg, a city in Sonoma County, California.
Today
59°F
Light Rain
Rain. Mostly cloudy. High near 59, with temperatures falling to around 55 in the afternoon. Southeast wind around 7 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Healdsburg
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 59°F | Light Rain | 7 mph SE | 94% |
| Tonight | 42°F | Chance Light Rain then Patchy Fog | 2 to 6 mph NE | 30% |
| Wednesday | 68°F | Patchy Fog then Sunny | 2 to 7 mph NNW | 1% |
| Wednesday Night | 43°F | Partly Cloudy | 3 to 8 mph NNW | 0% |
| Thursday | 73°F | Sunny | 5 mph WNW | 0% |
| Thursday Night | 44°F | Mostly Clear | 3 mph NW | 0% |
| Friday | 75°F | Sunny | 2 mph WNW | 0% |
| Friday Night | 45°F | Mostly Clear | 2 mph NNW | 0% |
| Saturday | 77°F | Sunny | 2 mph ESE | 0% |
| Saturday Night | 45°F | Mostly Clear | 2 mph WNW | 0% |
| Sunday | 75°F | Mostly Sunny | 2 mph WNW | 0% |
| Sunday Night | 45°F | Mostly Cloudy then Patchy Fog | 2 mph WNW | 0% |
| Monday | 72°F | Patchy Fog then Partly Sunny | 3 mph WNW | 3% |
| Monday Night | 44°F | Partly Cloudy then Patchy Fog | 3 mph NW | 5% |
Forecast source: National Weather Service (api.weather.gov) for Healdsburg (38.623, -122.865). Updated through the day.
Growing snapshot for Healdsburg
Last spring frost
Feb 15
First fall frost
Dec 2
Growing season
292 days
Hardiness zone
9b
More local growing data for Healdsburg: 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 Healdsburg). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.