South Boston weather records
Record high and low temperatures for South Boston, by month, by season, and all-time, with the dates they occurred, across 1980–2026 of daily climate history. Its hottest day on record reached 103°F on 2011-07-22; its coldest fell to -13°F on 1984-01-22.
Records by month
The warmest (▲) and coldest (▼) both the daytime high and the overnight low have ever been in each calendar month, so each column shows its record high and its record low. Tap a month for its full averages and typical range.
| Month | Daytime high | Overnight low |
|---|---|---|
| January | 69°F2020-01-12
6°F2004-01-15
|
57°F1995-01-16
-13°F1984-01-22
|
| February | 72°F2017-02-24
9°F1995-02-06
|
53°F2017-02-25
-12°F2016-02-14
|
| March | 86°F1998-03-31
22°F2005-03-09
|
62°F2012-03-23
1°F2003-03-07
|
| April | 90°F2009-04-28
23°F1982-04-07
|
65°F2009-04-26
18°F1982-04-07
|
| May | 94°F2017-05-18
45°F1987-05-05
|
72°F1991-05-25
34°F2008-05-01
|
| June | 100°F1988-06-15
50°F2015-06-02
|
78°F1991-06-29
42°F1986-06-03
|
| July | 103°F2011-07-22
59°F2021-07-03
|
80°F1995-07-15
49°F1988-07-01
|
| August | 100°F1993-08-28
60°F1987-08-29
|
80°F2006-08-02
45°F1986-08-30
|
| September | 96°F1983-09-11
53°F1992-09-30
|
76°F2018-09-04
36°F2000-09-29
|
| October | 85°F2011-10-09
39°F2000-10-29
|
70°F2017-10-09
23°F2020-10-31
|
| November | 80°F2024-11-06
27°F2002-11-28
|
66°F2022-11-06
7°F1989-11-24
|
| December | 71°F1998-12-07
12°F1983-12-25
|
60°F2006-12-01
-7°F1980-12-26
|
Records by season
The warmest (▲) and coldest (▼) both the daytime high and the overnight low have reached in each meteorological season (Northern Hemisphere, each a three-month span).
| Season | Daytime high | Overnight low |
|---|---|---|
| Winter (Dec–Feb) | 72°F2017-02-24
6°F2004-01-15
|
60°F2006-12-01
-13°F1984-01-22
|
| Spring (Mar–May) | 94°F2017-05-18
22°F2005-03-09
|
72°F1991-05-25
1°F2003-03-07
|
| Summer (Jun–Aug) | 103°F2011-07-22
50°F2015-06-02
|
80°F1995-07-15
42°F1986-06-03
|
| Autumn (Sep–Nov) | 96°F1983-09-11
27°F2002-11-28
|
76°F2018-09-04
7°F1989-11-24
|
All-time records
The most extreme value South Boston has recorded for each metric across its entire history.
High
Low
Feels-like
Humidity
Wind
Gust
Precip
For rainfall, the “driest” figure is the longest run of consecutive days without measurable rain, dated to when that dry spell began.