Atascadero, CA Weather & Growing Conditions
Overnight
56°F
Mostly Clear
Mostly clear, with a low around 56. South wind around 0 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 56°F | Mostly Clear | 0 mph | 0% |
| Tuesday | 93°F | Sunny | 0 to 15 mph SW | 0% |
| Tuesday Night | 57°F | Mostly Clear | 0 to 15 mph S | 0% |
| Wednesday | 93°F | Sunny | 0 to 10 mph SSW | 0% |
| Wednesday Night | 60°F | Mostly Clear | 0 to 10 mph WNW | 0% |
| Thursday | 95°F | Sunny | 0 to 10 mph W | 0% |
| Thursday Night | 59°F | Mostly Clear | 0 to 10 mph WSW | 0% |
| Friday | 93°F | Sunny | 0 to 10 mph W | 0% |
| Friday Night | 62°F | Mostly Clear | 0 to 10 mph WSW | 0% |
| Saturday | 95°F | Sunny | 0 to 10 mph N | 0% |
| Saturday Night | 62°F | Mostly Clear | 0 to 10 mph SSW | 0% |
| Sunday | 91°F | Sunny | 0 to 10 mph SW | 0% |
| Sunday Night | 57°F | Mostly Clear | 5 to 10 mph SW | 1% |
| Monday | 83°F | Sunny | 5 to 10 mph SW | 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 Aug 4, 2026.