| 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 01109 - Springfield, MA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 17 | 20 | 27 | 38 | 48 | 57 | 62 | 61 | 52 | 41 | 33 | 22 | 40 |
| Avg Max Temp (°F) | 36 | 39 | 48 | 61 | 72 | 80 | 85 | 83 | 75 | 64 | 52 | 40 | 61 |
| Avg Precip (In.) | 3.59 | 2.95 | 4.02 | 4.22 | 4.04 | 4.04 | 4.13 | 3.65 | 3.88 | 3.95 | 3.91 | 3.63 | 46.01 |