Harman US

Potrero, CA Weather & Growing Conditions

This Afternoon
81°F
Sunny
Sunny, with a high near 81. West wind around 10 mph, with gusts as high as 20 mph.

7-day forecast

WhenTempForecastWindPrecip
This Afternoon 81°F Sunny 10 mph W 0%
Tonight 56°F Mostly Clear 0 to 10 mph NW 0%
Saturday 83°F Sunny 0 to 10 mph NW 0%
Saturday Night 59°F Mostly Clear 0 to 5 mph NE 0%
Sunday 82°F Mostly Sunny 0 to 10 mph SW 0%
Sunday Night 58°F Mostly Cloudy 0 to 5 mph W 1%
Monday 77°F Sunny 0 to 10 mph SW 1%
Monday Night 55°F Mostly Clear 0 to 10 mph NW 0%
Tuesday 81°F Sunny 0 to 10 mph NW 0%
Tuesday Night 60°F Clear 0 to 10 mph N 0%
Wednesday 89°F Sunny 0 to 5 mph NE 4%
Wednesday Night 65°F Clear 0 to 5 mph N 2%
Thursday 90°F Sunny 5 to 10 mph SE 6%
Thursday Night 67°F Mostly Clear 0 to 5 mph NE 2%

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.