Casa de Oro-Mount Helix, CA Weather & Growing Conditions
Tonight
63°F
Mostly Cloudy
Mostly cloudy, with a low around 63. South wind 0 to 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 63°F | Mostly Cloudy | 0 to 5 mph S | 0% |
| Sunday | 77°F | Partly Sunny | 0 to 10 mph W | 2% |
| Sunday Night | 64°F | Mostly Cloudy | 0 to 5 mph SW | 3% |
| Monday | 75°F | Mostly Sunny | 0 to 10 mph SW | 3% |
| Monday Night | 62°F | Partly Cloudy | 0 to 5 mph S | 1% |
| Tuesday | 76°F | Sunny | 5 to 10 mph NW | 0% |
| Tuesday Night | 63°F | Mostly Clear | 0 to 10 mph NW | 0% |
| Wednesday | 81°F | Sunny | 0 to 10 mph W | 0% |
| Wednesday Night | 64°F | Mostly Clear | 0 to 5 mph NW | 1% |
| Thursday | 83°F | Sunny | 0 to 10 mph NW | 2% |
| Thursday Night | 66°F | Mostly Clear | 0 to 5 mph NW | 1% |
| Friday | 85°F | Sunny | 0 to 10 mph NW | 1% |
| Friday Night | 67°F | Mostly Clear | 5 mph N | 0% |
| Saturday | 87°F | Sunny | 5 to 10 mph NW | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Casa de Oro-Mount Helix, CA
Last spring frost
Jan 6
First fall frost
Dec 21
Growing season
350 days
Hardiness zone
10b
Explore more for Casa de Oro-Mount Helix, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, El Cajon, Ca (4.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.