San Luis Obispo, CA Weather & Growing Conditions
This Afternoon
68°F
Slight Chance Rain Showers
A slight chance of rain showers after 4pm. Mostly sunny, with a high near 68. West northwest wind around 10 mph. Chance of precipitation is 20%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 68°F | Slight Chance Rain Showers | 10 mph WNW | 15% |
| Tonight | 51°F | Slight Chance Rain Showers then Partly Cloudy | 5 to 10 mph NNW | 15% |
| Wednesday | 72°F | Sunny | 5 to 15 mph N | 0% |
| Wednesday Night | 53°F | Mostly Cloudy | 10 to 15 mph NNE | 0% |
| Thursday | 75°F | Mostly Sunny | 10 to 15 mph NNE | 0% |
| Thursday Night | 52°F | Mostly Clear | 15 mph NNE | 0% |
| Friday | 80°F | Sunny | 10 to 15 mph NNE | 0% |
| Friday Night | 52°F | Mostly Clear | 10 to 20 mph NNE | 0% |
| Saturday | 83°F | Sunny | 0 to 10 mph WNW | 0% |
| Saturday Night | 54°F | Mostly Clear | 5 mph NNE | 0% |
| Sunday | 83°F | Sunny | 0 to 5 mph NNE | 0% |
| Sunday Night | 56°F | Partly Cloudy | 0 to 5 mph NNE | 0% |
| Monday | 80°F | Mostly Sunny | 0 to 5 mph NNW | 0% |
| Monday Night | 55°F | Mostly Cloudy | 5 to 15 mph N | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for San Luis Obispo, CA
Last spring frost
Jan 31
First fall frost
Dec 11
Growing season
319 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 Ap, Ca (1.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.