Los Osos, CA Weather & Growing Conditions
Today
74°F
Patchy Fog then Mostly Cloudy
Patchy fog before 11am. Mostly cloudy, with a high near 74. West northwest wind 5 to 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 74°F | Patchy Fog then Mostly Cloudy | 5 to 10 mph WNW | 0% |
| Tonight | 58°F | Patchy Fog | 0 to 5 mph NW | 0% |
| Wednesday | 75°F | Patchy Fog then Partly Sunny | 0 to 10 mph WNW | 0% |
| Wednesday Night | 59°F | Patchy Fog | 5 to 10 mph NW | 0% |
| Thursday | 76°F | Patchy Fog then Partly Sunny | 5 to 10 mph WNW | 0% |
| Thursday Night | 58°F | Patchy Fog | 0 to 10 mph NW | 0% |
| Friday | 77°F | Patchy Fog then Partly Sunny | 0 to 10 mph W | 0% |
| Friday Night | 59°F | Partly Cloudy | 0 to 10 mph WNW | 0% |
| Saturday | 75°F | Mostly Sunny | 0 to 10 mph WNW | 0% |
| Saturday Night | 60°F | Partly Cloudy | 0 to 10 mph NW | 0% |
| Sunday | 75°F | Mostly Sunny | 0 to 10 mph SW | 0% |
| Sunday Night | 59°F | Partly Cloudy | 0 to 10 mph WSW | 0% |
| Monday | 72°F | Mostly Sunny | 0 to 10 mph SW | 0% |
| Monday Night | 58°F | Partly Cloudy | 0 to 10 mph NW | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Los Osos, CA
Last spring frost
Jan 19
First fall frost
Jan 14
Growing season
365 days
Hardiness zone
10a
Explore more for Los Osos, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, Morro Bay Fire Dept, Ca (5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.