Weather Avenue > 
Weather America > United States > 
Maryland > 
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| Month | Max. | Min. | Avg. |
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| January | 19°C | -10°C | 2°C |
| February | 17°C | -3°C | 6°C |
| March | 22°C | -1°C | 9°C |
| April | 29°C | 3°C | 14°C |
| May | 29°C | 9°C | 19°C |
| June | 36°C | 14°C | 24°C |
| July | 40°C | 0°C | 26°C |
| August | 36°C | 0°C | 24°C |
| September | 38°C | 11°C | 22°C |
| October | 31°C | 5°C | 17°C |
| November | 23°C | -6°C | 8°C |
| December | 15°C | -2°C | 6°C |
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