Atascadero, CA Weather & Growing Conditions
Tonight
46°F
Slight Chance Rain Showers then Partly Cloudy
A slight chance of rain showers before 10pm. Partly cloudy, with a low around 46. Northwest wind around 5 mph. Chance of precipitation is 20%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 46°F | Slight Chance Rain Showers then Partly Cloudy | 5 mph NW | 15% |
| Wednesday | 67°F | Mostly Sunny | 5 to 10 mph NNE | 0% |
| Wednesday Night | 46°F | Partly Cloudy | 10 to 15 mph NE | 0% |
| Thursday | 71°F | Sunny | 10 to 15 mph NE | 0% |
| Thursday Night | 46°F | Mostly Clear | 10 to 20 mph NE | 0% |
| Friday | 75°F | Sunny | 10 to 15 mph NE | 0% |
| Friday Night | 48°F | Clear | 10 to 15 mph NE | 0% |
| Saturday | 81°F | Sunny | 0 to 10 mph N | 0% |
| Saturday Night | 49°F | Clear | 0 to 5 mph NNE | 0% |
| Sunday | 80°F | Sunny | 5 mph NNE | 0% |
| Sunday Night | 51°F | Partly Cloudy | 0 to 5 mph NE | 0% |
| Monday | 77°F | Mostly Sunny | 5 mph N | 0% |
| Monday Night | 50°F | Partly Cloudy | 0 to 10 mph N | 0% |
| Tuesday | 75°F | Sunny | 5 mph NNE | 3% |
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 Nov 4, 2026.