Atascadero, CA Weather & Growing Conditions
Tonight
54°F
Mostly Clear
Mostly clear, with a low around 54. North northeast wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 54°F | Mostly Clear | 5 mph NNE | 0% |
| Saturday | 88°F | Sunny | 5 to 10 mph NW | 0% |
| Saturday Night | 55°F | Mostly Cloudy then Patchy Fog | 5 mph ENE | 0% |
| Sunday | 82°F | Patchy Fog then Partly Sunny | 5 to 10 mph W | 2% |
| Sunday Night | 53°F | Mostly Cloudy | 5 to 10 mph WSW | 2% |
| Monday | 77°F | Mostly Sunny | 5 to 15 mph WSW | 0% |
| Monday Night | 52°F | Mostly Clear | 0 to 10 mph W | 0% |
| Tuesday | 83°F | Sunny | 0 to 10 mph WNW | 0% |
| Tuesday Night | 57°F | Clear | 0 to 10 mph NNE | 0% |
| Wednesday | 94°F | Sunny | 5 to 10 mph NW | 0% |
| Wednesday Night | 61°F | Mostly Clear | 0 to 10 mph NE | 0% |
| Thursday | 92°F | Sunny | 5 to 10 mph SSW | 1% |
| Thursday Night | 60°F | Mostly Clear | 0 to 10 mph SSE | 1% |
| Friday | 87°F | Sunny | 0 to 10 mph SSW | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Atascadero, CA
Last spring frost
Jan 19
First fall frost
Jan 14
Growing season
365 days
Hardiness zone
9a
Explore more for Atascadero, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, Morro Bay Fire Dept, Ca (11.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.