Irvine, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Irvine, a city in Orange County, California.
Overnight
67°F
Mostly Cloudy
Mostly cloudy, with a low around 67. South wind around 0 mph.
7-day forecast for Irvine
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 67°F | Mostly Cloudy | 0 mph | 0% |
| Tuesday | 87°F | Mostly Sunny | 0 to 10 mph SW | 1% |
| Tuesday Night | 68°F | Partly Cloudy | 0 to 5 mph W | 1% |
| Wednesday | 87°F | Mostly Sunny | 0 to 10 mph SW | 0% |
| Wednesday Night | 68°F | Partly Cloudy | 0 to 5 mph SW | 0% |
| Thursday | 87°F | Mostly Sunny | 0 to 10 mph SW | 0% |
| Thursday Night | 69°F | Partly Cloudy | 0 to 5 mph S | 0% |
| Friday | 88°F | Mostly Sunny | 0 to 10 mph S | 0% |
| Friday Night | 70°F | Partly Cloudy | 0 to 10 mph S | 0% |
| Saturday | 88°F | Sunny | 0 to 10 mph S | 0% |
| Saturday Night | 70°F | Mostly Clear | 0 to 10 mph S | 0% |
| Sunday | 87°F | Sunny | 0 to 10 mph S | 0% |
| Sunday Night | 69°F | Partly Cloudy | 0 to 10 mph S | 2% |
| Monday | 86°F | Mostly Sunny | 0 to 10 mph S | 2% |
Forecast source: National Weather Service (api.weather.gov) for Irvine (33.678, -117.771). Updated through the day.
Growing snapshot for Irvine
Last spring frost
Jan 5
First fall frost
Dec 25
Growing season
365 days
Hardiness zone
10a
More local growing data for Irvine: nearby ZIP 92604 weather · frost dates · planting calendar · California frost dates
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Climate data from the nearest NOAA station, Tustin Irvine Rch, Ca (2.2 mi from Irvine). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.