Pacheco, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Pacheco, a community in Contra Costa County, California.
Tonight
49°F
Partly Cloudy
Partly cloudy, with a low around 49. East wind around 5 mph. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Pacheco
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 49°F | Partly Cloudy | 5 mph E | 7% |
| Wednesday | 68°F | Sunny | 0 to 9 mph NW | 2% |
| Wednesday Night | 49°F | Mostly Cloudy | 0 to 6 mph SW | 2% |
| Thursday | 72°F | Mostly Sunny | 1 mph N | 0% |
| Thursday Night | 49°F | Mostly Clear | 0 mph | 0% |
| Friday | 73°F | Sunny | 0 mph | 0% |
| Friday Night | 49°F | Mostly Clear | 0 mph | 0% |
| Saturday | 73°F | Sunny | 0 to 6 mph NNE | 0% |
| Saturday Night | 50°F | Mostly Clear | 0 mph | 0% |
| Sunday | 73°F | Sunny | 0 to 3 mph N | 0% |
| Sunday Night | 50°F | Partly Cloudy | 0 mph | 0% |
| Monday | 72°F | Mostly Sunny | 2 mph WSW | 2% |
| Monday Night | 50°F | Partly Cloudy | 2 mph NW | 2% |
| Tuesday | 72°F | Sunny | 0 mph | 5% |
Forecast source: National Weather Service (api.weather.gov) for Pacheco (37.988, -122.070). Updated through the day.
Growing snapshot for Pacheco
Last spring frost
Jan 7
First fall frost
Dec 19
Growing season
346 days
Hardiness zone
9b
More local growing data for Pacheco: 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 Pacheco). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.