Harman US

California, PA Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for California, a borough in Washington County, Pennsylvania.

Overnight
52°F
Partly Cloudy
Partly cloudy, with a low around 52. South wind around 1 mph.

7-day forecast for California

WhenTempForecastWindPrecip
Overnight 52°F Partly Cloudy 1 mph S 1%
Wednesday 78°F Partly Sunny 1 to 8 mph S 13%
Wednesday Night 60°F Light Rain 9 mph S 97%
Thursday 70°F Chance Light Rain then Partly Sunny 7 to 12 mph SW 47%
Thursday Night 47°F Partly Cloudy 2 to 6 mph SW 2%
Friday 64°F Partly Sunny then Slight Chance Light Rain 3 to 8 mph SW 20%
Friday Night 41°F Chance Light Rain 3 to 8 mph W 34%
Saturday 53°F Chance Light Rain 8 to 12 mph W 34%
Saturday Night 35°F Chance Light Rain 6 to 9 mph W 27%
Sunday 55°F Partly Sunny 6 to 13 mph W 8%
Sunday Night 32°F Partly Cloudy 9 mph SW 5%
Monday 55°F Mostly Sunny 8 to 13 mph W 9%
Monday Night 34°F Mostly Clear 6 to 10 mph SW 8%
Tuesday 60°F Sunny 10 to 14 mph SW 3%

Forecast source: National Weather Service (api.weather.gov) for California (40.067, -79.912). Updated through the day.

Growing snapshot for California

Last spring frost
Apr 13
First fall frost
Nov 5
Growing season
205 days
Hardiness zone
6b

More local growing data for California: nearby ZIP 15419 weather · frost dates · planting calendar · Pennsylvania frost dates

Nearby towns & communities

All Pennsylvania locations ›

Climate data from the nearest NOAA station, Charleroi Lock 4, Pa (6.2 mi from California). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.