Boonville, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Boonville, a community in Mendocino County, California.
This Afternoon
60°F
Slight Chance Light Rain
A slight chance of rain. Mostly sunny, with a high near 60. Southeast wind around 7 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Boonville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 60°F | Slight Chance Light Rain | 7 mph SE | 20% |
| Tonight | 43°F | Slight Chance Light Rain then Patchy Fog | 1 to 7 mph ESE | 20% |
| Wednesday | 66°F | Patchy Fog then Mostly Cloudy | 1 to 13 mph NW | 1% |
| Wednesday Night | 41°F | Mostly Cloudy then Patchy Fog | 1 to 10 mph WNW | 0% |
| Thursday | 72°F | Patchy Fog then Sunny | 1 to 12 mph NW | 0% |
| Thursday Night | 41°F | Partly Cloudy then Patchy Fog | 0 to 12 mph NNW | 0% |
| Friday | 74°F | Patchy Fog then Mostly Sunny | 0 to 7 mph NNW | 0% |
| Friday Night | 43°F | Mostly Clear | 1 to 7 mph N | 0% |
| Saturday | 79°F | Sunny | 1 to 6 mph N | 0% |
| Saturday Night | 43°F | Patchy Fog | 1 to 6 mph NNW | 0% |
| Sunday | 73°F | Patchy Fog then Partly Sunny | 1 to 7 mph NNW | 0% |
| Sunday Night | 44°F | Patchy Fog | 1 to 7 mph NNW | 3% |
| Monday | 71°F | Patchy Fog then Partly Sunny | 1 to 8 mph NNW | 6% |
| Monday Night | 42°F | Areas Of Fog | 0 to 8 mph NNW | 6% |
Forecast source: National Weather Service (api.weather.gov) for Boonville (39.011, -123.374). Updated through the day.
Growing snapshot for Boonville
Last spring frost
Mar 5
First fall frost
Nov 21
Growing season
259 days
Hardiness zone
9b
More local growing data for Boonville: nearby ZIP 95415 weather · frost dates · planting calendar · California frost dates
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Climate data from the nearest NOAA station, Ukiah Muni Ap, Ca (11.5 mi from Boonville). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.