Weather in South Boston, Massachusetts, United States in May
In an average May, South Boston sees a daily high around 65°F and a low around 45°F, based on 1981–2026 of local climate records.
| Average high | 65°F |
|---|---|
| Typical high range | 54°F to 75°F |
| Average low | 45°F |
| Typical low range | 38°F to 53°F |
| Average daily precipitation | 0.10 in |
May records
The most extreme May on record for each metric, across 1981–2026. For rainfall, the wettest and driest are by total May accumulation.
High
Highest
89°F
2016-05-28
Lowest
43°F
2007-05-18
Low
Highest
66°F
2017-05-18
Lowest
30°F
1992-05-06
Feels-like
Highest
107°F
2016-05-28
Lowest
23°F
1992-05-06
Humidity
Highest
17.6 g/m³
1991-05-25
Lowest
3.7 g/m³
1995-05-07
Wind
Highest
16 mph
2002-05-03
Lowest
3 mph
1982-05-16
Precip
Wettest
11.18 in
2006
Driest
1.28 in
1993
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