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
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| 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.