Weather in South Boston, Massachusetts, United States in July
In an average July, South Boston sees a daily high around 82°F and a low around 63°F, based on 1981–2026 of local climate records.
| Average high | 82°F |
|---|---|
| Typical high range | 74°F to 89°F |
| Average low | 63°F |
| Typical low range | 57°F to 69°F |
| Average daily precipitation | 0.10 in |
July records
The most extreme July on record for each metric, across 1981–2026. For rainfall, the wettest and driest are by total July accumulation.
High
Highest
98°F
2025-07-29
Lowest
60°F
2021-07-03
Low
Highest
76°F
2026-07-03
Lowest
45°F
1988-07-01
Feels-like
Highest
123°F
2002-07-03
Lowest
42°F
1988-07-01
Humidity
Highest
21.3 g/m³
2019-07-20
Lowest
8.5 g/m³
1988-07-01
Wind
Highest
13 mph
1983-07-22
Lowest
3 mph
2007-07-30
Precip
Wettest
11.05 in
2021
Driest
1.60 in
1987
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