| 2023 Hardiness Zone: | Zone 9b: 25°F to 30°F Zone 10a: 30°F to 35°F |
| 2012 Hardiness Zone: | Zone 9b: 25°F to 30°F Zone 10a: 30°F to 35°F |
| 1990 Hardiness Zone: | Zone 9b: 25F to 30F |
| Average First Frost Date: | Dec. 11 - Dec. 20 |
| Average Last Frost Date: | Feb. 11 - Feb. 20 |
| Koppen-Geiger Climate Zone: | Csb - Warm-Summer Mediterranean Climate |
| Ecoregion: | |
| Heat Zone Days: | 15 - 30 days Over 86°F |
Annual Climate Data for ZIP Code 94061 - Redwood City, CA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 38 | 41 | 42 | 44 | 47 | 50 | 53 | 53 | 51 | 47 | 42 | 37 | 45 |
| Avg Max Temp (°F) | 58 | 62 | 65 | 71 | 75 | 80 | 83 | 83 | 81 | 76 | 65 | 59 | 71 |
| Avg Precip (In.) | 4.76 | 4.74 | 3.94 | 1.3 | .51 | .11 | .04 | .09 | .26 | 1.19 | 2.99 | 3.37 | 23.3 |