Pittsburg, CA Weather & Growing Conditions
Tonight
59°F
Clear
Clear, with a low around 59. Southwest wind around 15 mph, with gusts as high as 23 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 59°F | Clear | 15 mph SW | 0% |
| Saturday | 89°F | Sunny | 7 to 12 mph WSW | 0% |
| Saturday Night | 60°F | Partly Cloudy | 10 to 15 mph WSW | 0% |
| Sunday | 81°F | Partly Sunny | 10 to 15 mph WSW | 0% |
| Sunday Night | 59°F | Mostly Cloudy | 12 to 18 mph WSW | 0% |
| Monday | 83°F | Sunny | 12 to 18 mph WSW | 0% |
| Monday Night | 58°F | Mostly Clear | 15 mph WSW | 0% |
| Tuesday | 85°F | Sunny | 8 to 13 mph WSW | 0% |
| Tuesday Night | 59°F | Mostly Clear | 2 to 10 mph WSW | 0% |
| Wednesday | 94°F | Sunny | 5 mph WNW | 0% |
| Wednesday Night | 64°F | Mostly Clear | 7 mph WSW | 0% |
| Thursday | 94°F | Sunny | 2 to 9 mph W | 0% |
| Thursday Night | 64°F | Mostly Clear | 9 to 13 mph WSW | 0% |
| Friday | 87°F | Sunny | 13 mph WSW | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Pittsburg, CA
Last spring frost
Jan 9
First fall frost
Dec 14
Growing season
343 days
Hardiness zone
9b
Explore more for Pittsburg, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, Concord Buchanan Fld, Ca (7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.