S
M
T
W
T
F
S
29
54°
34°
30
47°
30°
1
44°
33°
2
44°
36°
3
46°
31°
4
48°
27°
5
44°
30°
6
43°
28°
7
42°
26°
8
41°
23°
9
40°
22°
10
38°
21°
11
37°
29°
12
50°
28°
13
Hist. Avg.
44°
25°
14
Hist. Avg.
44°
25°
15
Hist. Avg.
44°
24°
16
Hist. Avg.
44°
24°
17
Hist. Avg.
43°
24°
18
Hist. Avg.
43°
24°
19
Hist. Avg.
43°
23°
20
Hist. Avg.
43°
23°
21
Hist. Avg.
42°
23°
22
Hist. Avg.
42°
22°
23
Hist. Avg.
42°
22°
24
Hist. Avg.
42°
22°
25
Hist. Avg.
42°
22°
26
Hist. Avg.
41°
22°
27
Hist. Avg.
41°
22°
28
Hist. Avg.
41°
21°
29
Hist. Avg.
41°
21°
30
Hist. Avg.
40°
21°
31
Hist. Avg.
40°
21°
1
Hist. Avg.
40°
21°
2
Hist. Avg.
40°
20°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Southampton
Southampton's December 2026 forecast shows daily high temperatures ranging from 37° to 54°, with overnight lows between 21° and 36°. The average high for December is 44° with an average low of 28°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how December weather will actually feel in Southampton. See also: January | February | March.
