Julian, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Julian, a community in San Diego County, California.
Overnight
69°F
Clear
Clear, with a low around 69. Southwest wind around 5 mph.
7-day forecast for Julian
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 69°F | Clear | 5 mph SW | 0% |
| Tuesday | 92°F | Sunny | 10 to 15 mph W | 1% |
| Tuesday Night | 68°F | Mostly Clear | 5 to 15 mph W | 1% |
| Wednesday | 91°F | Sunny | 0 to 15 mph NW | 3% |
| Wednesday Night | 69°F | Mostly Clear | 0 to 15 mph W | 2% |
| Thursday | 91°F | Sunny | 0 to 5 mph W | 6% |
| Thursday Night | 69°F | Mostly Clear | 5 mph W | 2% |
| Friday | 90°F | Sunny | 5 mph W | 4% |
| Friday Night | 69°F | Mostly Clear | 5 mph W | 0% |
| Saturday | 93°F | Sunny | 5 mph W | 4% |
| Saturday Night | 70°F | Mostly Clear | 0 to 5 mph W | 1% |
| Sunday | 92°F | Sunny | 0 to 5 mph SW | 8% |
| Sunday Night | 68°F | Mostly Clear | 0 to 5 mph W | 4% |
| Monday | 88°F | Sunny | 0 to 10 mph SW | 12% |
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 Aug 4, 2026.