Frost dates in Los Altos, CA
The average last spring frost in Los Altos is around January 28 and the first fall frost is around December 12. That gives Los Altos an average growing season of about 319 days.
Last spring frost
| Early (10% chance after) | January 4 |
|---|---|
| Average (50%) | January 28 |
| Late (90%) | March 12 |
First fall frost
| Early (10%) | November 18 |
|---|---|
| Average (50%) | December 12 |
| Late (90% chance before) | December 22 |