San Simeon, CA Weather & Growing Conditions
Tonight
59°F
Mostly Clear
Mostly clear, with a low around 59. North wind 5 to 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 59°F | Mostly Clear | 5 to 10 mph N | 0% |
| Saturday | 84°F | Sunny | 5 to 10 mph NW | 0% |
| Saturday Night | 61°F | Mostly Cloudy | 5 mph NNW | 0% |
| Sunday | 79°F | Partly Sunny | 5 to 10 mph WNW | 3% |
| Sunday Night | 58°F | Partly Cloudy | 5 mph NW | 3% |
| Monday | 73°F | Sunny | 5 to 10 mph WNW | 0% |
| Monday Night | 57°F | Mostly Clear | 0 to 5 mph NW | 0% |
| Tuesday | 77°F | Sunny | 0 to 5 mph NW | 0% |
| Tuesday Night | 64°F | Clear | 0 to 5 mph NNW | 0% |
| Wednesday | 89°F | Sunny | 0 to 5 mph NNW | 0% |
| Wednesday Night | 70°F | Mostly Clear | 0 to 5 mph N | 0% |
| Thursday | 87°F | Sunny | 0 to 5 mph SSW | 0% |
| Thursday Night | 68°F | Partly Cloudy | 0 mph | 0% |
| Friday | 83°F | Mostly Sunny | 0 to 5 mph W | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for San Simeon, CA
Last spring frost
Feb 13
First fall frost
Feb 1
Growing season
365 days
Hardiness zone
10a
Explore more for San Simeon, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, Hearst Castle, Ca (5.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.