Rancho Santa Margarita, CA Weather & Growing Conditions
Today
86°F
Sunny
Sunny, with a high near 86. Southwest wind 5 to 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 86°F | Sunny | 5 to 10 mph SW | 1% |
| Tonight | 68°F | Mostly Clear | 0 to 5 mph NE | 1% |
| Wednesday | 84°F | Sunny | 5 to 10 mph W | 0% |
| Wednesday Night | 69°F | Mostly Clear | 0 to 5 mph E | 0% |
| Thursday | 86°F | Sunny | 5 to 10 mph S | 1% |
| Thursday Night | 70°F | Mostly Clear | 0 to 5 mph S | 1% |
| Friday | 87°F | Sunny | 5 to 10 mph S | 0% |
| Friday Night | 71°F | Mostly Clear | 0 to 5 mph S | 0% |
| Saturday | 88°F | Sunny | 5 to 10 mph SW | 0% |
| Saturday Night | 71°F | Mostly Clear | 0 to 5 mph S | 0% |
| Sunday | 87°F | Sunny | 5 to 10 mph S | 0% |
| Sunday Night | 70°F | Mostly Clear | 5 mph S | 2% |
| Monday | 84°F | Sunny | 5 to 10 mph S | 3% |
| Monday Night | 68°F | Mostly Clear | 5 mph S | 2% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Rancho Santa Margarita, CA
Last spring frost
Jan 28
First fall frost
Dec 18
Growing season
329 days
Hardiness zone
10b
Explore more for Rancho Santa Margarita, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, Elsinore, Ca (9.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.