Martinez, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Martinez, a city in Contra Costa County, California.
This Afternoon
67°F
Sunny
Sunny. High near 67, with temperatures falling to around 64 in the afternoon. West northwest wind around 7 mph.
7-day forecast for Martinez
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 67°F | Sunny | 7 mph WNW | 1% |
| Tonight | 49°F | Partly Cloudy | 2 to 6 mph WSW | 1% |
| Thursday | 71°F | Sunny | 3 mph WNW | 0% |
| Thursday Night | 50°F | Mostly Clear | 3 mph SW | 0% |
| Friday | 71°F | Sunny | 2 mph NE | 0% |
| Friday Night | 49°F | Mostly Clear | 2 mph S | 0% |
| Saturday | 72°F | Sunny | 1 to 6 mph NE | 0% |
| Saturday Night | 50°F | Mostly Clear | 1 mph WNW | 0% |
| Sunday | 71°F | Sunny | 3 mph NW | 0% |
| Sunday Night | 51°F | Partly Cloudy | 1 mph WNW | 0% |
| Monday | 70°F | Mostly Sunny | 3 mph WSW | 0% |
| Monday Night | 51°F | Partly Cloudy | 2 mph WSW | 1% |
| Tuesday | 71°F | Patchy Fog then Mostly Sunny | 2 mph WNW | 1% |
| Tuesday Night | 52°F | Partly Cloudy | 2 mph WSW | 7% |
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 Nov 5, 2026.