Rancho Santa Margarita, CA Weather & Growing Conditions
Today
88°F
Sunny
Sunny, with a high near 88. South wind 0 to 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 88°F | Sunny | 0 to 10 mph S | 1% |
| Tonight | 61°F | Patchy Fog | 0 to 5 mph SW | 1% |
| Wednesday | 86°F | Patchy Fog then Sunny | 0 to 10 mph W | 0% |
| Wednesday Night | 61°F | Mostly Clear | 0 to 5 mph S | 0% |
| Thursday | 89°F | Sunny | 0 to 5 mph S | 2% |
| Thursday Night | 63°F | Mostly Clear | 0 to 5 mph S | 2% |
| Friday | 90°F | Sunny | 0 to 5 mph S | 0% |
| Friday Night | 63°F | Mostly Clear | 0 to 5 mph SW | 0% |
| Saturday | 91°F | Sunny | 0 to 5 mph S | 0% |
| Saturday Night | 63°F | Mostly Clear | 0 to 5 mph S | 0% |
| Sunday | 89°F | Sunny | 0 to 5 mph S | 0% |
| Sunday Night | 62°F | Mostly Clear | 0 to 5 mph S | 2% |
| Monday | 87°F | Sunny | 0 to 10 mph S | 2% |
| Monday Night | 61°F | Mostly Clear | 0 to 5 mph S | 2% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Rancho Santa Margarita, CA
Growing season
365 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, Irvine Rch, Ca (10.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.