Boulder Creek, CA Weather & Growing Conditions
Tonight
52°F
Mostly Cloudy then Patchy Fog
Patchy fog after 5am. Mostly cloudy, with a low around 52. North northwest wind around 2 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 52°F | Mostly Cloudy then Patchy Fog | 2 mph NNW | 0% |
| Sunday | 76°F | Patchy Fog then Mostly Cloudy | 1 to 5 mph NW | 1% |
| Sunday Night | 51°F | Mostly Cloudy then Areas Of Fog | 0 to 3 mph NW | 1% |
| Monday | 77°F | Areas Of Fog then Mostly Sunny | 0 to 3 mph W | 0% |
| Monday Night | 51°F | Partly Cloudy then Patchy Fog | 0 to 3 mph W | 1% |
| Tuesday | 80°F | Areas Of Fog then Mostly Sunny | 0 to 3 mph WSW | 1% |
| Tuesday Night | 52°F | Mostly Clear | 0 to 3 mph NW | 0% |
| Wednesday | 91°F | Sunny | 0 to 3 mph NW | 0% |
| Wednesday Night | 58°F | Mostly Clear | 0 to 3 mph NNW | 0% |
| Thursday | 94°F | Sunny | 0 to 3 mph WNW | 0% |
| Thursday Night | 56°F | Mostly Clear | 0 to 3 mph NW | 0% |
| Friday | 86°F | Sunny | 0 to 5 mph WNW | 0% |
| Friday Night | 53°F | Partly Cloudy | 0 to 5 mph WNW | 1% |
| Saturday | 81°F | Sunny | 0 to 5 mph W | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Boulder Creek, CA
Last spring frost
Mar 25
First fall frost
Nov 11
Growing season
231 days
Hardiness zone
9b
Explore more for Boulder Creek, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, Ben Lomond #4, Ca (7.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.