Potrero, CA Weather & Growing Conditions
Overnight
69°F
Mostly Clear
Mostly clear, with a low around 69. Southwest wind 0 to 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 69°F | Mostly Clear | 0 to 5 mph SW | 0% |
| Tuesday | 92°F | Sunny | 0 to 15 mph SW | 2% |
| Tuesday Night | 68°F | Mostly Clear | 0 to 10 mph S | 1% |
| Wednesday | 91°F | Sunny | 0 to 10 mph SW | 5% |
| Wednesday Night | 69°F | Mostly Clear | 0 to 10 mph S | 2% |
| Thursday | 91°F | Sunny | 0 to 10 mph SW | 6% |
| Thursday Night | 70°F | Mostly Clear | 0 to 10 mph S | 3% |
| Friday | 92°F | Sunny | 0 to 10 mph W | 2% |
| Friday Night | 71°F | Mostly Clear | 0 to 10 mph N | 0% |
| Saturday | 95°F | Sunny | 0 to 10 mph W | 3% |
| Saturday Night | 72°F | Mostly Clear | 0 to 10 mph NE | 1% |
| Sunday | 94°F | Slight Chance Showers And Thunderstorms | 0 to 10 mph SW | 15% |
| Sunday Night | 70°F | Mostly Clear | 0 to 10 mph SE | 5% |
| Monday | 91°F | Sunny | 0 to 10 mph SW | 10% |
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 Aug 4, 2026.