| 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. 11 - Oct. 20 |
| Average Last Frost Date: | May 11 - May 20 |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers |
| Ecoregion: | 67d - Northern Dissected Ridges and Knobs |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 16601 - Altoona, PA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 19 | 21 | 28 | 37 | 47 | 56 | 60 | 59 | 51 | 40 | 33 | 24 | 40 |
| Avg Max Temp (°F) | 34 | 38 | 47 | 59 | 70 | 78 | 82 | 80 | 73 | 62 | 50 | 39 | 59 |
| Avg Precip (In.) | 2.73 | 2.47 | 3.41 | 3.35 | 4.08 | 4.17 | 3.87 | 3.28 | 3.63 | 2.99 | 3.27 | 2.7 | 39.96 |