Santa Margarita, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Santa Margarita, a community in San Luis Obispo County, California.
This Afternoon
86°F
Mostly Sunny
Mostly sunny, with a high near 86. West southwest wind 5 to 10 mph.
7-day forecast for Santa Margarita
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 86°F | Mostly Sunny | 5 to 10 mph WSW | 0% |
| Tonight | 48°F | Mostly Cloudy | 5 mph N | 0% |
| Sunday | 83°F | Partly Sunny | 5 to 10 mph W | 1% |
| Sunday Night | 45°F | Mostly Cloudy then Patchy Fog | 0 to 5 mph SSW | 4% |
| Monday | 77°F | Patchy Fog then Mostly Sunny | 0 to 10 mph SW | 1% |
| Monday Night | 44°F | Partly Cloudy | 0 to 10 mph NW | 1% |
| Tuesday | 80°F | Sunny | 5 to 10 mph NW | 0% |
| Tuesday Night | 56°F | Mostly Clear | 0 to 5 mph N | 0% |
| Wednesday | 94°F | Sunny | 0 to 5 mph NNW | 0% |
| Wednesday Night | 60°F | Mostly Clear | 0 to 5 mph NNE | 0% |
| Thursday | 94°F | Sunny | 0 to 5 mph S | 0% |
| Thursday Night | 59°F | Mostly Clear | 0 to 5 mph SSE | 0% |
| Friday | 87°F | Sunny | 0 to 10 mph S | 1% |
| Friday Night | 55°F | Partly Cloudy | 0 to 5 mph SSW | 3% |
Forecast source: National Weather Service (api.weather.gov) for Santa Margarita (35.389, -120.608). Updated through the day.
Growing snapshot for Santa Margarita
Last spring frost
Jan 16
First fall frost
Dec 25
Growing season
349 days
Hardiness zone
9b
More local growing data for Santa Margarita: nearby ZIP 93410 weather · frost dates · planting calendar · California frost dates
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Climate data from the nearest NOAA station, San Luis Obispo Poly, Ca (0.3 mi from Santa Margarita). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.