Norco, CA Weather & Growing Conditions
Today
91°F
Sunny
Sunny, with a high near 91. West wind 0 to 15 mph, with gusts as high as 25 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 91°F | Sunny | 0 to 15 mph W | 0% |
| Tonight | 66°F | Mostly Clear then Patchy Fog | 0 to 15 mph W | 0% |
| Wednesday | 92°F | Patchy Fog then Sunny | 0 to 15 mph W | 0% |
| Wednesday Night | 67°F | Mostly Clear | 0 to 15 mph W | 0% |
| Thursday | 94°F | Sunny | 0 to 15 mph SW | 1% |
| Thursday Night | 68°F | Mostly Clear | 0 to 10 mph W | 1% |
| Friday | 93°F | Sunny | 0 to 15 mph W | 0% |
| Friday Night | 68°F | Mostly Clear | 0 to 15 mph W | 0% |
| Saturday | 96°F | Sunny | 0 to 15 mph W | 0% |
| Saturday Night | 68°F | Mostly Clear | 0 to 15 mph SW | 0% |
| Sunday | 95°F | Sunny | 0 to 15 mph W | 1% |
| Sunday Night | 68°F | Mostly Clear | 0 to 15 mph W | 1% |
| Monday | 92°F | Sunny | 0 to 15 mph W | 2% |
| Monday Night | 66°F | Mostly Clear | 0 to 15 mph SW | 2% |
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 Aug 4, 2026.