WeatherWX.com
Boston Harbor Monthly Climate Averages
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 46°F Lo 35°F | Hi 47°F Lo 34°F | Hi 51°F Lo 36°F | Hi 57°F Lo 39°F | Hi 65°F Lo 43°F | Hi 72°F Lo 47°F | Hi 79°F Lo 52°F | Hi 80°F Lo 53°F | Hi 73°F Lo 50°F | Hi 60°F Lo 44°F | Hi 49°F Lo 39°F | Hi 43°F Lo 34°F |
| 5 mph | 5 mph | 5 mph | 5 mph | 4 mph | 5 mph | 4 mph | 4 mph | 4 mph | 4 mph | 5 mph | 4 mph |
| 11.4 in | 7.9 in | 8.8 in | 5.9 in | 3.7 in | 2.6 in | 0.9 in | 1.2 in | 4.2 in | 9.9 in | 11.5 in | 10.3 in |
| 89% | 88% | 85% | 81% | 76% | 74% | 70% | 72% | 77% | 83% | 88% | 89% |
| 64% | 63% | 63% | 56% | 52% | 47% | 32% | 32% | 41% | 50% | 61% | 64% |
| 30.1 in | 30.1 in | 30.0 in | 30.1 in | 30.0 in | 30.0 in | 30.0 in | 30.0 in | 30.0 in | 30.0 in | 30.0 in | 30.1 in |
| 16 | 13 | 17 | 21 | 25 | 25 | 30 | 29 | 24 | 21 | 16 | 16 |
| 13 | 11 | 13 | 9 | 6 | 5 | 1 | 2 | 6 | 10 | 13 | 12 |
| 2 | 4 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 |
| 9 | 9 | 10 | 11 | 14 | 16 | 14 | 14 | 14 | 10 | 9 | 10 |
| 2 | 2 | 3 | 3 | 4 | 5 | 6 | 4 | 4 | 3 | 2 | 1 |
| 191 | 175 | 209 | 233 | 264 | 285 | 329 | 328 | 292 | 256 | 204 | 190 |
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 8°C Lo 2°C | Hi 8°C Lo 1°C | Hi 11°C Lo 2°C | Hi 14°C Lo 4°C | Hi 19°C Lo 6°C | Hi 22°C Lo 8°C | Hi 26°C Lo 11°C | Hi 27°C Lo 11°C | Hi 23°C Lo 10°C | Hi 16°C Lo 6°C | Hi 10°C Lo 4°C | Hi 6°C Lo 1°C |
| 7 km/h | 8 km/h | 7 km/h | 8 km/h | 7 km/h | 7 km/h | 7 km/h | 6 km/h | 6 km/h | 7 km/h | 8 km/h | 7 km/h |
| 289 mm | 202 mm | 223 mm | 150 mm | 94 mm | 67 mm | 22 mm | 31 mm | 106 mm | 251 mm | 293 mm | 262 mm |
| 89% | 88% | 85% | 81% | 76% | 74% | 70% | 72% | 77% | 83% | 88% | 89% |
| 64% | 63% | 63% | 56% | 52% | 47% | 32% | 32% | 41% | 50% | 61% | 64% |
| 1019 mb | 1018 mb | 1017 mb | 1018 mb | 1017 mb | 1017 mb | 1018 mb | 1016 mb | 1016 mb | 1017 mb | 1017 mb | 1018 mb |
| 16 | 13 | 17 | 21 | 25 | 25 | 30 | 29 | 24 | 21 | 16 | 16 |
| 13 | 11 | 13 | 9 | 6 | 5 | 1 | 2 | 6 | 10 | 13 | 12 |
| 2 | 4 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 |
| 9 | 9 | 10 | 11 | 14 | 16 | 14 | 14 | 14 | 10 | 9 | 10 |
| 2 | 2 | 3 | 3 | 4 | 5 | 6 | 4 | 4 | 3 | 2 | 1 |
| 191 | 175 | 209 | 233 | 264 | 285 | 329 | 328 | 292 | 256 | 204 | 190 |
| Month |
| Avg. Temperatures |
| Avg. Wind Speed |
| Avg. Precipitation |
| Average Humidity |
| Avg. Cloud Cover |
| Pressure Average |
| Average Dry Days |
| Avg. Precip. Days |
| Avg. Snow Days |
| Average Fog Days |
| Average UV Index |
| Avg. Hours of Sun |
Averages are based on historical weather data from the past 10 years.
