Julian, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Julian, a community in San Diego County, California.
Tonight
56°F
Mostly Clear
Mostly clear, with a low around 56. West wind 5 to 10 mph.
7-day forecast for Julian
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 56°F | Mostly Clear | 5 to 10 mph W | 1% |
| Saturday | 82°F | Sunny | 5 to 10 mph W | 0% |
| Saturday Night | 58°F | Mostly Clear | 0 to 10 mph W | 0% |
| Sunday | 81°F | Mostly Sunny | 5 to 10 mph SE | 0% |
| Sunday Night | 59°F | Partly Cloudy | 5 to 10 mph W | 1% |
| Monday | 74°F | Sunny | 5 to 10 mph W | 1% |
| Monday Night | 52°F | Mostly Clear | 5 mph W | 0% |
| Tuesday | 78°F | Sunny | 5 mph W | 0% |
| Tuesday Night | 59°F | Clear | 0 to 5 mph NW | 0% |
| Wednesday | 83°F | Sunny | 5 to 10 mph NE | 0% |
| Wednesday Night | 63°F | Mostly Clear | 0 to 5 mph NE | 1% |
| Thursday | 84°F | Sunny | 0 to 5 mph SE | 7% |
| Thursday Night | 63°F | Mostly Clear | 0 to 5 mph SW | 6% |
| Friday | 84°F | Sunny | 0 to 5 mph W | 7% |
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 Sep 19, 2026.