Martinez, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Martinez, a city in Contra Costa County, California.
Tonight
58°F
Clear
Clear, with a low around 58. Southwest wind 6 to 10 mph.
7-day forecast for Martinez
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 58°F | Clear | 6 to 10 mph SW | 0% |
| Saturday | 86°F | Sunny | 3 to 9 mph WSW | 0% |
| Saturday Night | 58°F | Partly Cloudy | 9 mph SW | 0% |
| Sunday | 77°F | Partly Sunny | 7 to 10 mph SW | 1% |
| Sunday Night | 57°F | Mostly Cloudy | 10 mph SW | 1% |
| Monday | 78°F | Sunny | 8 to 12 mph SW | 0% |
| Monday Night | 57°F | Mostly Clear | 6 to 12 mph SW | 0% |
| Tuesday | 83°F | Sunny | 5 to 9 mph SW | 0% |
| Tuesday Night | 58°F | Mostly Clear | 2 to 9 mph SW | 0% |
| Wednesday | 94°F | Sunny | 1 to 6 mph W | 0% |
| Wednesday Night | 62°F | Mostly Clear | 2 to 6 mph WSW | 0% |
| Thursday | 94°F | Sunny | 1 to 8 mph WSW | 0% |
| Thursday Night | 62°F | Mostly Clear | 8 mph SW | 0% |
| Friday | 87°F | Sunny | 5 to 9 mph SW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Martinez (37.998, -122.114). Updated through the day.
Growing snapshot for Martinez
Last spring frost
Feb 28
First fall frost
Nov 22
Growing season
266 days
Hardiness zone
9b
More local growing data for Martinez: nearby ZIP 94553 weather · frost dates · planting calendar · California frost dates
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Climate data from the nearest NOAA station, Martinez Wtp, Ca (3.4 mi from Martinez). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.