| 2023 Hardiness Zone: | Zone 7b: 5°F to 10°F Zone 7a: 0°F to 5°F | |
| 2012 Hardiness Zone: | Zone 6b: -5°F to 0°F Zone 7a: 0°F to 5°F | |
| 1990 Hardiness Zone: | Zone 6a: -10F to -5F | |
| Average First Frost Date: | Nov. 1 - Nov. 10 | |
| Average Last Frost Date: | Apr. 11 - Apr. 20 | |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers | |
| Ecoregion: | 64a - Triassic Lowlands | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 8 - 14 days Over 86°F |
Annual Climate Data for ZIP Code 17057 - Middletown, PA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 22 | 24 | 32 | 41 | 51 | 60 | 65 | 63 | 56 | 44 | 35 | 27 | 43 |
| Avg Max Temp (°F) | 37 | 41 | 51 | 63 | 73 | 81 | 86 | 84 | 76 | 65 | 53 | 42 | 63 |
| Avg Precip (In.) | 3.31 | 2.77 | 3.48 | 3.36 | 4.34 | 4.05 | 3.51 | 3.21 | 3.85 | 3.08 | 3.43 | 3.12 | 41.5 |