California Polytechnic State University, CA Weather & Growing Conditions
Tonight
52°F
Slight Chance Rain Showers then Partly Cloudy
A slight chance of rain showers before 10pm. Partly cloudy, with a low around 52. North northwest wind around 5 mph. Chance of precipitation is 20%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 52°F | Slight Chance Rain Showers then Partly Cloudy | 5 mph NNW | 15% |
| Wednesday | 71°F | Sunny | 5 to 15 mph N | 0% |
| Wednesday Night | 54°F | Mostly Cloudy | 10 to 15 mph NNE | 0% |
| Thursday | 74°F | Mostly Sunny | 15 mph NNE | 0% |
| Thursday Night | 54°F | Mostly Clear | 10 to 15 mph NNE | 0% |
| Friday | 78°F | Sunny | 10 to 15 mph NNE | 0% |
| Friday Night | 54°F | Mostly Clear | 10 to 20 mph NE | 0% |
| Saturday | 81°F | Sunny | 0 to 15 mph NW | 0% |
| Saturday Night | 56°F | Mostly Clear | 0 to 10 mph NNE | 0% |
| Sunday | 82°F | Sunny | 0 to 10 mph N | 0% |
| Sunday Night | 58°F | Partly Cloudy | 0 to 5 mph NNE | 0% |
| Monday | 79°F | Mostly Sunny | 0 to 5 mph NNW | 0% |
| Monday Night | 57°F | Partly Cloudy | 5 to 10 mph N | 0% |
| Tuesday | 77°F | Mostly Sunny | 5 to 10 mph N | 3% |
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 (0.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.