Norco, CA Weather & Growing Conditions
This Afternoon
86°F
Sunny
Sunny, with a high near 86. West wind 5 to 15 mph, with gusts as high as 25 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 86°F | Sunny | 5 to 15 mph W | 0% |
| Tonight | 64°F | Partly Cloudy | 0 to 10 mph NW | 0% |
| Sunday | 83°F | Mostly Sunny | 0 to 15 mph W | 0% |
| Sunday Night | 64°F | Partly Cloudy | 5 to 15 mph W | 2% |
| Monday | 80°F | Mostly Sunny | 0 to 15 mph W | 2% |
| Monday Night | 62°F | Mostly Clear | 0 to 10 mph W | 0% |
| Tuesday | 82°F | Sunny | 0 to 10 mph W | 0% |
| Tuesday Night | 63°F | Clear | 0 to 10 mph W | 0% |
| Wednesday | 90°F | Sunny | 0 to 10 mph W | 0% |
| Wednesday Night | 66°F | Mostly Clear | 0 to 10 mph W | 0% |
| Thursday | 92°F | Sunny | 0 to 10 mph W | 1% |
| Thursday Night | 67°F | Mostly Clear | 0 to 10 mph W | 1% |
| Friday | 91°F | Sunny | 0 to 10 mph W | 2% |
| Friday Night | 67°F | Mostly Clear | 0 to 10 mph SW | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Norco, CA
Last spring frost
Jan 17
First fall frost
Dec 19
Growing season
335 days
Hardiness zone
10a
Explore more for Norco, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, Chino Ap, Ca (6.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.