Rancho Santa Margarita, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Rancho Santa Margarita, a city in Orange County, California.
Today
73°F
Sunny
Sunny, with a high near 73. South wind 0 to 5 mph.
7-day forecast for Rancho Santa Margarita
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 73°F | Sunny | 0 to 5 mph S | 5% |
| Tonight | 56°F | Partly Cloudy | 0 to 5 mph NE | 0% |
| Thursday | 78°F | Mostly Sunny | 0 to 5 mph N | 0% |
| Thursday Night | 59°F | Partly Cloudy | 0 to 5 mph E | 0% |
| Friday | 83°F | Sunny | 5 mph N | 0% |
| Friday Night | 60°F | Clear | 10 mph NE | 0% |
| Saturday | 85°F | Sunny | 0 to 10 mph N | 0% |
| Saturday Night | 63°F | Mostly Clear | 5 to 10 mph N | 0% |
| Sunday | 85°F | Sunny | 0 to 5 mph N | 0% |
| Sunday Night | 64°F | Mostly Clear | 0 to 10 mph NE | 0% |
| Monday | 82°F | Sunny | 0 to 5 mph E | 0% |
| Monday Night | 62°F | Partly Cloudy | 0 to 5 mph NE | 1% |
| Tuesday | 79°F | Mostly Sunny | 0 to 5 mph SW | 1% |
| Tuesday Night | 60°F | Mostly Clear | 0 mph | 5% |
Forecast source: National Weather Service (api.weather.gov) for Rancho Santa Margarita (33.632, -117.599). Updated through the day.
Growing snapshot for Rancho Santa Margarita
Growing season
365 days
Hardiness zone
10b
More local growing data for Rancho Santa Margarita: nearby ZIP 92688 weather · frost dates · planting calendar · California frost dates
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Climate data from the nearest NOAA station, Irvine Rch, Ca (9.5 mi from Rancho Santa Margarita). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.