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California Polytechnic State University, CA Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for California Polytechnic State University, a community in San Luis Obispo County, California.

Today
78°F
Mostly Sunny
Mostly sunny, with a high near 78. West southwest wind 0 to 10 mph.

7-day forecast for California Polytechnic State University

WhenTempForecastWindPrecip
Today 78°F Mostly Sunny 0 to 10 mph WSW 0%
Tonight 56°F Mostly Cloudy 0 to 5 mph SSW 0%
Wednesday 78°F Mostly Sunny 0 to 10 mph SW 0%
Wednesday Night 58°F Partly Cloudy 5 mph NW 0%
Thursday 79°F Mostly Sunny 0 to 5 mph WNW 0%
Thursday Night 59°F Partly Cloudy 0 to 5 mph NW 0%
Friday 81°F Sunny 0 to 5 mph WSW 0%
Friday Night 60°F Partly Cloudy 0 to 5 mph NW 0%
Saturday 82°F Sunny 0 to 5 mph WSW 0%
Saturday Night 61°F Mostly Clear 0 to 5 mph S 0%
Sunday 81°F Sunny 0 to 5 mph SSW 0%
Sunday Night 58°F Partly Cloudy 5 mph SW 1%
Monday 76°F Sunny 5 to 10 mph SW 1%
Monday Night 56°F Partly Cloudy 0 to 10 mph S 1%

Forecast source: National Weather Service (api.weather.gov) for California Polytechnic State University (35.307, -120.667). Updated through the day.

Growing snapshot for California Polytechnic State University

Last spring frost
Jan 16
First fall frost
Dec 25
Growing season
349 days
Hardiness zone
9b

More local growing data for California Polytechnic State University: nearby ZIP 93407 weather · frost dates · planting calendar · California frost dates

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Climate data from the nearest NOAA station, San Luis Obispo Poly, Ca (0.4 mi from California Polytechnic State University). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.