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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
70°F
Mostly Sunny
Mostly sunny, with a high near 70. North wind 5 to 15 mph, with gusts as high as 25 mph.

7-day forecast for California Polytechnic State University

WhenTempForecastWindPrecip
Today 70°F Mostly Sunny 5 to 15 mph N 0%
Tonight 54°F Mostly Cloudy 15 to 20 mph NNE 0%
Thursday 73°F Mostly Sunny 15 mph NNE 0%
Thursday Night 55°F Mostly Clear 10 to 20 mph NNE 0%
Friday 78°F Sunny 10 to 20 mph NNE 0%
Friday Night 54°F Mostly Clear 10 to 15 mph NE 0%
Saturday 80°F Sunny 0 to 15 mph WNW 0%
Saturday Night 56°F Mostly Clear 0 to 10 mph NNE 0%
Sunday 80°F Sunny 5 to 10 mph N 0%
Sunday Night 57°F Mostly Clear 5 to 10 mph NNE 0%
Monday 79°F Mostly Sunny 0 to 10 mph N 0%
Monday Night 57°F Partly Cloudy 0 to 10 mph N 1%
Tuesday 77°F Sunny 5 to 10 mph N 2%
Tuesday Night 55°F Mostly Clear 5 to 10 mph N 7%

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 Nov 4, 2026.