| 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 Zone 6b: -5°F to 0°F Zone 5b: -15°F to -10°F |
| 1990 Hardiness Zone: | Zone 6a: -10F to -5F |
| Average First Frost Date: | Oct. 1 - Oct. 10 |
| Average Last Frost Date: | May 21 - May 31 |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers |
| Ecoregion: | 67a - Northern Limestone/Dolomite Valleys |
| Heat Zone Days: | 1 - 7 days Over 86°F |
Annual Climate Data for ZIP Code 17745 - Lock Haven, PA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 17 | 19 | 27 | 37 | 46 | 55 | 60 | 58 | 51 | 40 | 32 | 23 | 39 |
| Avg Max Temp (°F) | 35 | 39 | 49 | 62 | 73 | 81 | 84 | 83 | 75 | 64 | 51 | 39 | 61 |
| Avg Precip (In.) | 2.74 | 2.61 | 3.36 | 3.24 | 3.68 | 4.64 | 4.03 | 3.52 | 3.88 | 3.1 | 3.43 | 2.8 | 41.03 |