Bloomfield, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Bloomfield, a community in Sonoma County, California.
This Afternoon
74°F
Sunny
Sunny. High near 74, with temperatures falling to around 69 in the afternoon. West southwest wind around 13 mph, with gusts as high as 22 mph.
7-day forecast for Bloomfield
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 74°F | Sunny | 13 mph WSW | 0% |
| Tonight | 52°F | Partly Cloudy then Areas Of Fog | 1 to 12 mph SW | 0% |
| Saturday | 77°F | Areas Of Fog then Mostly Sunny | 0 to 12 mph SSW | 0% |
| Saturday Night | 52°F | Mostly Cloudy | 2 to 9 mph W | 0% |
| Sunday | 72°F | Patchy Fog then Partly Sunny | 2 to 10 mph WSW | 0% |
| Sunday Night | 51°F | Mostly Cloudy then Areas Of Fog | 0 to 10 mph W | 0% |
| Monday | 73°F | Areas Of Fog then Mostly Sunny | 0 to 10 mph WSW | 0% |
| Monday Night | 51°F | Areas Of Fog | 0 to 10 mph W | 0% |
| Tuesday | 76°F | Areas Of Fog then Mostly Sunny | 0 to 10 mph W | 0% |
| Tuesday Night | 52°F | Areas Of Fog | 0 to 10 mph W | 0% |
| Wednesday | 84°F | Areas Of Fog then Mostly Sunny | 0 to 9 mph NW | 0% |
| Wednesday Night | 54°F | Partly Cloudy | 0 to 9 mph NW | 0% |
| Thursday | 84°F | Mostly Sunny | 0 to 10 mph W | 0% |
| Thursday Night | 55°F | Partly Cloudy | 1 to 10 mph W | 0% |
Forecast source: National Weather Service (api.weather.gov) for Bloomfield (38.322, -122.834). Updated through the day.
Growing snapshot for Bloomfield
Last spring frost
Mar 20
First fall frost
Nov 13
Growing season
240 days
Hardiness zone
9a
More local growing data for Bloomfield: nearby ZIP 95472 weather · frost dates · planting calendar · California frost dates
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Climate data from the nearest NOAA station, Graton, Ca (2.2 mi from Bloomfield). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.