Julian, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Julian, a community in San Diego County, California.
Overnight
44°F
Partly Cloudy
Partly cloudy, with a low around 44. West wind around 15 mph, with gusts as high as 25 mph.
7-day forecast for Julian
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 44°F | Partly Cloudy | 15 mph W | 5% |
| Wednesday | 62°F | Sunny | 0 to 10 mph W | 0% |
| Wednesday Night | 45°F | Mostly Clear | 0 to 10 mph E | 0% |
| Thursday | 64°F | Sunny | 0 to 5 mph NE | 0% |
| Thursday Night | 46°F | Mostly Clear | 0 to 5 mph NE | 0% |
| Friday | 66°F | Sunny | 5 mph NE | 0% |
| Friday Night | 48°F | Clear | 5 to 10 mph NE | 0% |
| Saturday | 66°F | Sunny | 5 to 10 mph NE | 0% |
| Saturday Night | 50°F | Mostly Clear | 5 to 10 mph E | 0% |
| Sunday | 67°F | Sunny | 5 to 10 mph E | 1% |
| Sunday Night | 50°F | Partly Cloudy | 5 mph E | 0% |
| Monday | 68°F | Mostly Sunny | 0 to 5 mph SE | 0% |
| Monday Night | 50°F | Partly Cloudy | 0 mph | 1% |
| Tuesday | 67°F | Mostly Sunny | 0 to 5 mph W | 1% |
Forecast source: National Weather Service (api.weather.gov) for Julian (33.074, -116.589). Updated through the day.
Growing snapshot for Julian
Last spring frost
Apr 19
First fall frost
Oct 27
Growing season
190 days
Hardiness zone
9b
More local growing data for Julian: nearby ZIP 91916 weather · frost dates · planting calendar · California frost dates
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Climate data from the nearest NOAA station, Cuyamaca, Ca (6 mi from Julian). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.