Potrero, CA Weather & Growing Conditions
This Afternoon
67°F
Mostly Sunny
Mostly sunny, with a high near 67. Northwest wind around 10 mph, with gusts as high as 20 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 67°F | Mostly Sunny | 10 mph NW | 0% |
| Tonight | 50°F | Partly Cloudy | 5 to 10 mph NW | 1% |
| Wednesday | 67°F | Sunny | 5 to 10 mph NW | 0% |
| Wednesday Night | 50°F | Mostly Clear | 0 to 5 mph NE | 0% |
| Thursday | 72°F | Sunny | 5 to 10 mph NE | 0% |
| Thursday Night | 52°F | Mostly Clear | 5 to 10 mph NE | 0% |
| Friday | 73°F | Sunny | 5 to 10 mph NE | 0% |
| Friday Night | 55°F | Clear | 5 to 15 mph NE | 0% |
| Saturday | 75°F | Sunny | 10 to 15 mph NE | 0% |
| Saturday Night | 58°F | Clear | 10 to 15 mph NE | 0% |
| Sunday | 76°F | Sunny | 10 to 15 mph NE | 0% |
| Sunday Night | 59°F | Partly Cloudy | 10 to 15 mph NE | 0% |
| Monday | 76°F | Sunny | 5 to 10 mph NE | 0% |
| Monday Night | 56°F | Mostly Clear | 5 mph N | 1% |
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 Nov 4, 2026.