South Boston weather by month
South Boston has warm summers, cold winters and plenty of rain. The most pleasant months are May to June and September.
Find South Boston’s climate twinWhere else has South Boston’s May weather?Stays in South BostonThings to do in South Boston
Month by month
Average daytime high, night low, rain or snow, how the air feels and how strong the sun is, 1991–2020. Best months are highlighted.
| Month | High | Low | Rain | Air | Sun |
|---|---|---|---|---|---|
| January | 37°F 3°C | 20°F -6°C | 3.7 in 95 mm | Dry | Weak sun |
| February | 40°F 5°C | 22°F -6°C | 3.2 in 82 mm | Dry | Moderate sun |
| March | 47°F 8°C | 29°F -2°C | 4.7 in 119 mm | Dry | Moderate sun |
| April | 58°F 15°C | 38°F 3°C | 3.9 in 100 mm | Dry | Sunny |
| May | 70°F 21°C | 48°F 9°C | 3.2 in 82 mm | Dry | Sunny |
| June | 79°F 26°C | 58°F 14°C | 3.7 in 94 mm | Comfortable | Sunny |
| July | 85°F 29°C | 64°F 18°C | 3.5 in 88 mm | A little humid | Strong sun |
| August | 83°F 29°C | 63°F 17°C | 3.6 in 91 mm | A little humid | Sunny |
| September | 76°F 24°C | 55°F 13°C | 3.6 in 92 mm | Comfortable | Sunny |
| October | 64°F 18°C | 44°F 6°C | 4.5 in 114 mm | Dry | Moderate sun |
| November | 53°F 12°C | 35°F 2°C | 3.9 in 100 mm | Dry | Weak sun |
| December | 43°F 6°C | 26°F -3°C | 4.3 in 110 mm | Dry | Weak sun |
Cities with a climate like South Boston
Whole-year match out of 100, one city per country, seasons lined up across the equator.