| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°F | |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F | |
| 1990 Hardiness Zone: | Zone 1b: -15F to -10F | |
| Average First Frost Date: | Oct. 1 - Oct. 10 | |
| Average Last Frost Date: | May 11 - May 20 | |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year | |
| Ecoregion: | 59a - Connecticut Valley | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 01129 - Springfield, MA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 17 | 19 | 27 | 37 | 48 | 56 | 62 | 60 | 52 | 41 | 33 | 22 | 39 |
| Avg Max Temp (°F) | 36 | 39 | 48 | 60 | 71 | 80 | 85 | 83 | 75 | 64 | 52 | 40 | 61 |
| Avg Precip (In.) | 3.65 | 2.94 | 4.01 | 4.17 | 4.09 | 4.06 | 4.11 | 3.71 | 3.92 | 3.99 | 3.99 | 3.68 | 46.31 |