Irvine, CA Weather & Growing Conditions
Overnight
63°F
Partly Cloudy
Partly cloudy, with a low around 63. East wind around 0 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 63°F | Partly Cloudy | 0 mph | 2% |
| Saturday | 82°F | Sunny | 0 to 5 mph S | 2% |
| Saturday Night | 65°F | Partly Cloudy | 0 to 5 mph S | 0% |
| Sunday | 80°F | Partly Sunny | 0 to 5 mph SW | 1% |
| Sunday Night | 65°F | Mostly Cloudy | 0 to 5 mph S | 1% |
| Monday | 78°F | Mostly Sunny | 0 to 10 mph S | 1% |
| Monday Night | 64°F | Mostly Cloudy | 0 to 5 mph S | 1% |
| Tuesday | 79°F | Mostly Sunny | 0 to 5 mph SW | 1% |
| Tuesday Night | 65°F | Mostly Clear | 0 to 5 mph W | 0% |
| Wednesday | 85°F | Sunny | 0 to 5 mph SW | 0% |
| Wednesday Night | 66°F | Mostly Clear | 0 to 5 mph NW | 0% |
| Thursday | 86°F | Sunny | 0 to 5 mph W | 2% |
| Thursday Night | 67°F | Partly Cloudy | 0 to 5 mph W | 4% |
| Friday | 87°F | Sunny | 0 to 5 mph S | 4% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Irvine, CA
Last spring frost
Jan 5
First fall frost
Dec 25
Growing season
365 days
Hardiness zone
10b
Explore more for Irvine, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, Tustin Irvine Rch, Ca (2.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.