California Polytechnic State University, CA Weather & Growing Conditions
Tonight
57°F
Partly Cloudy
Partly cloudy, with a low around 57. North northwest wind 5 to 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 57°F | Partly Cloudy | 5 to 10 mph NNW | 0% |
| Saturday | 84°F | Mostly Sunny then Patchy Fog | 5 to 10 mph NW | 0% |
| Saturday Night | 58°F | Patchy Fog | 5 mph N | 0% |
| Sunday | 80°F | Patchy Fog then Mostly Cloudy | 5 to 10 mph W | 2% |
| Sunday Night | 56°F | Patchy Fog | 5 mph W | 2% |
| Monday | 75°F | Patchy Fog then Partly Sunny | 5 to 10 mph W | 1% |
| Monday Night | 55°F | Partly Cloudy | 5 to 10 mph NW | 1% |
| Tuesday | 77°F | Sunny | 5 to 10 mph NNW | 0% |
| Tuesday Night | 59°F | Mostly Clear | 0 to 10 mph NNW | 0% |
| Wednesday | 88°F | Sunny | 0 to 5 mph NW | 0% |
| Wednesday Night | 63°F | Mostly Clear | 0 to 5 mph NNW | 0% |
| Thursday | 86°F | Sunny | 0 to 5 mph SSE | 1% |
| Thursday Night | 62°F | Partly Cloudy | 0 to 5 mph SE | 1% |
| Friday | 82°F | Mostly Sunny | 0 to 5 mph SSW | 0% |
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.