| 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 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 1 - May 10 |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers |
| Ecoregion: | 70b - Monongahela Transition Zone |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 43758 - Malta, OH | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 19 | 21 | 29 | 38 | 48 | 57 | 62 | 60 | 53 | 40 | 32 | 24 | 40 |
| Avg Max Temp (°F) | 37 | 42 | 52 | 64 | 73 | 81 | 84 | 83 | 76 | 65 | 53 | 42 | 63 |
| Avg Precip (In.) | 3 | 2.55 | 3.37 | 3.51 | 4.38 | 4.32 | 4.67 | 4.17 | 3.12 | 2.64 | 3.27 | 3.1 | 42.1 |