San Luis Obispo, CA Weather & Growing Conditions
This Afternoon
70°F
Sunny
Sunny, with a high near 70. North northwest wind around 15 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 70°F | Sunny | 15 mph NNW | 0% |
| Tonight | 54°F | Mostly Clear | 10 to 15 mph N | 0% |
| Thursday | 76°F | Sunny | 15 mph NNE | 0% |
| Thursday Night | 55°F | Clear | 10 to 15 mph NNE | 0% |
| Friday | 80°F | Sunny | 10 to 15 mph NNE | 0% |
| Friday Night | 55°F | Clear | 10 to 15 mph NNE | 0% |
| Saturday | 82°F | Sunny | 5 to 10 mph NNW | 0% |
| Saturday Night | 54°F | Mostly Clear | 5 mph N | 0% |
| Sunday | 80°F | Sunny | 0 to 5 mph N | 0% |
| Sunday Night | 55°F | Partly Cloudy | 5 mph NNE | 0% |
| Monday | 78°F | Mostly Sunny | 0 to 5 mph N | 0% |
| Monday Night | 56°F | Partly Cloudy | 5 to 10 mph NNW | 0% |
| Tuesday | 77°F | Mostly Sunny | 5 to 10 mph NNE | 1% |
| Tuesday Night | 55°F | Mostly Clear | 5 to 10 mph N | 3% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for San Luis Obispo, CA
Last spring frost
Jan 16
First fall frost
Dec 25
Growing season
349 days
Hardiness zone
9b
Explore more for San Luis Obispo, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, San Luis Obispo Poly, Ca (4.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.