San Luis Obispo, CA Weather & Growing Conditions
Today
84°F
Patchy Fog then Mostly Sunny
Patchy fog before 11am. Mostly sunny, with a high near 84. Southwest wind 0 to 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Patchy Fog then Mostly Sunny | 0 to 10 mph SW | 0% |
| Tonight | 54°F | Patchy Fog | 0 to 5 mph S | 0% |
| Wednesday | 85°F | Patchy Fog then Mostly Sunny | 0 to 10 mph WSW | 0% |
| Wednesday Night | 56°F | Patchy Fog | 0 to 5 mph WNW | 0% |
| Thursday | 86°F | Patchy Fog then Mostly Sunny | 0 to 5 mph W | 0% |
| Thursday Night | 57°F | Patchy Fog | 0 to 5 mph WNW | 0% |
| Friday | 82°F | Patchy Fog then Mostly Sunny | 0 to 5 mph W | 0% |
| Friday Night | 58°F | Partly Cloudy | 0 to 5 mph NW | 0% |
| Saturday | 83°F | Mostly Sunny | 0 to 5 mph WSW | 0% |
| Saturday Night | 58°F | Partly Cloudy | 0 to 5 mph S | 0% |
| Sunday | 82°F | Sunny | 0 to 5 mph SSW | 0% |
| Sunday Night | 56°F | Partly Cloudy | 0 to 5 mph SSW | 1% |
| Monday | 78°F | Sunny | 0 to 10 mph SSW | 1% |
| Monday Night | 55°F | Partly Cloudy | 0 to 10 mph SW | 1% |
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 Aug 4, 2026.