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California Polytechnic State University, CA Weather & Growing Conditions

Today
85°F
Mostly Sunny
Mostly sunny, with a high near 85. Northwest wind 5 to 10 mph.

7-day forecast

WhenTempForecastWindPrecip
Today 85°F Mostly Sunny 5 to 10 mph NW 0%
Tonight 57°F Patchy Fog 5 mph N 0%
Sunday 78°F Patchy Fog then Mostly Cloudy 5 to 10 mph W 1%
Sunday Night 56°F Patchy Fog 5 mph W 2%
Monday 68°F Patchy Fog then Partly Sunny 5 to 10 mph W 1%
Monday Night 54°F Patchy Fog 5 to 10 mph NW 1%
Tuesday 74°F Patchy Fog then Mostly Sunny 0 to 10 mph WNW 0%
Tuesday Night 57°F Mostly Clear 5 to 10 mph N 0%
Wednesday 85°F Sunny 0 to 5 mph WNW 0%
Wednesday Night 61°F Mostly Clear 0 to 5 mph ENE 0%
Thursday 83°F Sunny 0 to 5 mph E 0%
Thursday Night 60°F Partly Cloudy 0 to 5 mph E 0%
Friday 79°F Mostly Sunny 0 to 5 mph SSW 0%
Friday Night 58°F Partly Cloudy 0 to 5 mph S 2%

Forecast source: National Weather Service (api.weather.gov). Updated through the day.

Growing snapshot for California Polytechnic State University, CA

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

Explore more for California Polytechnic State University, CA: full frost dates · planting calendar · California frost dates

Climate data from the nearest NOAA station, San Luis Obispo Poly, Ca (0.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.