Harman US

August, CA Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for August, a community in San Joaquin County, California.

This Afternoon
85°F
Sunny
Sunny, with a high near 85. Northwest wind around 6 mph.

7-day forecast for August

WhenTempForecastWindPrecip
This Afternoon 85°F Sunny 6 mph NW 0%
Tonight 59°F Clear 1 to 6 mph W 0%
Saturday 89°F Sunny 1 to 5 mph W 0%
Saturday Night 62°F Partly Cloudy 3 mph WNW 0%
Sunday 85°F Partly Sunny 5 mph WNW 1%
Sunday Night 60°F Mostly Cloudy 5 mph WNW 1%
Monday 88°F Sunny 5 mph WNW 0%
Monday Night 60°F Mostly Clear 5 mph NW 0%
Tuesday 89°F Sunny 5 mph NW 0%
Tuesday Night 61°F Clear 3 mph NW 0%
Wednesday 94°F Sunny 3 mph NW 0%
Wednesday Night 65°F Mostly Clear 3 mph NW 0%
Thursday 96°F Sunny 1 to 5 mph NW 0%
Thursday Night 65°F Mostly Clear 5 mph NW 0%

Forecast source: National Weather Service (api.weather.gov) for August (37.980, -121.263). Updated through the day.

Growing snapshot for August

Last spring frost
Feb 5
First fall frost
Dec 8
Growing season
305 days
Hardiness zone
9b

More local growing data for August: nearby ZIP 95205 weather · frost dates · planting calendar · California frost dates

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Climate data from the nearest NOAA station, Stockton Fire Stn 4, Ca (4 mi from August). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.