Pleasant Hill, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Pleasant Hill, a city in Contra Costa County, California.
Tonight
58°F
Clear
Clear, with a low around 58. South southwest wind around 7 mph.
7-day forecast for Pleasant Hill
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 58°F | Clear | 7 mph SSW | 0% |
| Saturday | 88°F | Sunny | 3 to 7 mph SW | 0% |
| Saturday Night | 58°F | Partly Cloudy | 7 mph SW | 0% |
| Sunday | 78°F | Partly Sunny | 8 mph SW | 1% |
| Sunday Night | 58°F | Mostly Cloudy | 8 mph SW | 1% |
| Monday | 80°F | Sunny | 9 mph SW | 0% |
| Monday Night | 58°F | Mostly Clear | 5 to 9 mph SW | 0% |
| Tuesday | 84°F | Sunny | 3 to 7 mph WSW | 0% |
| Tuesday Night | 58°F | Mostly Clear | 1 to 7 mph SW | 0% |
| Wednesday | 95°F | Sunny | 0 to 5 mph WSW | 0% |
| Wednesday Night | 62°F | Mostly Clear | 1 to 5 mph WSW | 0% |
| Thursday | 96°F | Sunny | 0 to 7 mph WSW | 0% |
| Thursday Night | 63°F | Mostly Clear | 3 to 7 mph SW | 0% |
| Friday | 88°F | Sunny | 3 to 7 mph SW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Pleasant Hill (37.954, -122.076). Updated through the day.
Growing snapshot for Pleasant Hill
Last spring frost
Jan 7
First fall frost
Dec 19
Growing season
346 days
Hardiness zone
9b
More local growing data for Pleasant Hill: nearby ZIP 94523 weather · frost dates · planting calendar · California frost dates
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Climate data from the nearest NOAA station, Concord Wwtp, Ca (2 mi from Pleasant Hill). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.