Frost dates in Norco, CA
The average last spring frost in Norco is around February 16 and the first fall frost is around December 7. That gives Norco an average growing season of about 295 days.
Last spring frost
| Early (10% chance after) | January 10 |
|---|---|
| Average (50%) | February 16 |
| Late (90%) | March 10 |
First fall frost
| Early (10%) | November 18 |
|---|---|
| Average (50%) | December 7 |
| Late (90% chance before) | December 19 |