| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 5b: -15°F to -10°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. 1 - Oct. 10 | |
| Average Last Frost Date: | May 11 - May 20 | |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year | |
| Ecoregion: | 67b - Northern Shale Valleys | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 21550 - Oakland, MD | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 17 | 19 | 26 | 35 | 45 | 53 | 58 | 56 | 50 | 38 | 30 | 22 | 37 |
| Avg Max Temp (°F) | 35 | 39 | 48 | 59 | 68 | 75 | 79 | 78 | 71 | 61 | 50 | 40 | 59 |
| Avg Precip (In.) | 3.49 | 3.25 | 4.09 | 4.16 | 4.88 | 4.66 | 5.3 | 4.24 | 3.6 | 3.17 | 3.74 | 3.76 | 48.33 |