| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 5b: -15°F to -10°F |
| 1990 Hardiness Zone: | Zone 1b: -15F to -10F |
| Average First Frost Date: | Oct. 11 - Oct. 20 |
| Average Last Frost Date: | May 11 - May 20 |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year |
| Ecoregion: | 61c - Low Lime Drift Plain |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 16124 - Fredonia, PA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 15 | 17 | 25 | 34 | 44 | 53 | 57 | 56 | 49 | 38 | 30 | 21 | 37 |
| Avg Max Temp (°F) | 33 | 37 | 47 | 59 | 70 | 78 | 82 | 80 | 74 | 62 | 49 | 38 | 59 |
| Avg Precip (In.) | 2.53 | 2.26 | 3.14 | 3.49 | 3.76 | 4.59 | 4.26 | 3.88 | 4.25 | 2.92 | 3.55 | 3.13 | 41.74 |