Los Osos, CA Weather & Growing Conditions
Overnight
52°F
Mostly Clear
Mostly clear, with a low around 52. North wind around 5 mph. Chance of precipitation is 20%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 52°F | Mostly Clear | 5 mph N | 15% |
| Wednesday | 68°F | Mostly Sunny | 5 to 15 mph NNW | 0% |
| Wednesday Night | 55°F | Mostly Cloudy then Patchy Fog | 10 to 15 mph N | 0% |
| Thursday | 72°F | Patchy Fog then Mostly Sunny | 10 to 15 mph N | 0% |
| Thursday Night | 54°F | Mostly Clear | 10 to 15 mph N | 0% |
| Friday | 76°F | Sunny | 10 to 15 mph N | 0% |
| Friday Night | 55°F | Mostly Clear | 5 to 10 mph NNE | 0% |
| Saturday | 77°F | Sunny | 0 to 5 mph N | 0% |
| Saturday Night | 55°F | Mostly Clear | 5 mph N | 0% |
| Sunday | 77°F | Sunny | 5 mph N | 0% |
| Sunday Night | 58°F | Mostly Clear | 5 mph NNE | 0% |
| Monday | 75°F | Mostly Sunny | 0 to 5 mph NNW | 0% |
| Monday Night | 57°F | Partly Cloudy | 5 mph NNW | 2% |
| Tuesday | 74°F | Sunny | 5 mph N | 2% |
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 Nov 4, 2026.