San Luis Obispo, CA Weather & Growing Conditions
Overnight
53°F
Patchy Fog
Patchy fog after 5am. Cloudy, with a low around 53. West wind around 0 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 53°F | Patchy Fog | 0 mph | 0% |
| Tuesday | 71°F | Patchy Fog then Partly Sunny | 0 to 10 mph WSW | 0% |
| Tuesday Night | 54°F | Patchy Fog | 0 to 5 mph NNW | 0% |
| Wednesday | 72°F | Patchy Fog then Mostly Sunny | 0 to 10 mph WSW | 0% |
| Wednesday Night | 56°F | Patchy Fog | 0 to 10 mph WNW | 0% |
| Thursday | 74°F | Patchy Fog then Mostly Sunny | 0 to 10 mph WNW | 0% |
| Thursday Night | 57°F | Patchy Fog | 0 to 10 mph NW | 0% |
| Friday | 77°F | Patchy Fog then Mostly Sunny | 0 to 10 mph W | 0% |
| Friday Night | 58°F | Partly Cloudy | 0 to 10 mph NW | 0% |
| Saturday | 79°F | Sunny | 0 to 10 mph WSW | 0% |
| Saturday Night | 58°F | Partly Cloudy | 0 to 10 mph SSW | 0% |
| Sunday | 77°F | Sunny | 0 to 10 mph SW | 0% |
| Sunday Night | 56°F | Partly Cloudy | 0 to 10 mph SW | 1% |
| Monday | 73°F | Sunny | 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 16
First fall frost
Dec 25
Growing season
349 days
Hardiness zone
10a
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 (3.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.