California Polytechnic State University, CA Weather & Growing Conditions
Overnight
55°F
Mostly Cloudy
Mostly cloudy, with a low around 55. South southwest wind around 0 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 55°F | Mostly Cloudy | 0 mph | 0% |
| Tuesday | 78°F | Mostly Sunny | 0 to 10 mph WSW | 0% |
| Tuesday Night | 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% |
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 Aug 4, 2026.