Potrero, CA Weather & Growing Conditions
Overnight
56°F
Mostly Clear
Mostly clear, with a low around 56. Northeast wind around 0 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 56°F | Mostly Clear | 0 mph | 0% |
| Saturday | 84°F | Sunny | 0 to 10 mph NW | 0% |
| Saturday Night | 59°F | Mostly Clear | 0 to 10 mph SE | 0% |
| Sunday | 82°F | Mostly Sunny | 0 to 10 mph W | 0% |
| Sunday Night | 58°F | Patchy Fog | 0 to 10 mph NW | 4% |
| Monday | 77°F | Patchy Fog then Sunny | 0 to 10 mph W | 1% |
| Monday Night | 54°F | Patchy Fog | 0 to 10 mph NW | 0% |
| Tuesday | 80°F | Sunny | 0 to 10 mph W | 0% |
| Tuesday Night | 58°F | Clear | 0 to 10 mph N | 0% |
| Wednesday | 87°F | Sunny | 0 to 5 mph E | 0% |
| Wednesday Night | 62°F | Mostly Clear | 0 to 5 mph NE | 1% |
| Thursday | 89°F | Sunny | 5 to 10 mph SE | 7% |
| Thursday Night | 64°F | Mostly Clear | 0 to 10 mph N | 7% |
| Friday | 88°F | Sunny | 0 to 10 mph W | 7% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Potrero, CA
Last spring frost
Apr 30
First fall frost
Oct 26
Growing season
174 days
Hardiness zone
9a
Explore more for Potrero, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, Campo, Ca (7.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.