S
M
T
W
T
F
S
29
50°
43°
30
51°
42°
1
51°
42°
2
50°
41°
3
50°
39°
4
49°
37°
5
48°
39°
6
49°
40°
7
47°
38°
8
46°
40°
9
47°
40°
10
48°
41°
11
49°
42°
12
44°
42°
13
44°
38°
14
43°
39°
15
Hist. Avg.
45°
37°
16
Hist. Avg.
45°
37°
17
Hist. Avg.
45°
37°
18
Hist. Avg.
45°
37°
19
Hist. Avg.
45°
37°
20
Hist. Avg.
45°
37°
21
Hist. Avg.
44°
37°
22
Hist. Avg.
44°
36°
23
Hist. Avg.
44°
36°
24
Hist. Avg.
44°
36°
25
Hist. Avg.
44°
36°
26
Hist. Avg.
44°
36°
27
Hist. Avg.
44°
36°
28
Hist. Avg.
44°
36°
29
Hist. Avg.
44°
36°
30
Hist. Avg.
44°
36°
31
Hist. Avg.
44°
36°
1
Hist. Avg.
45°
37°
2
Hist. Avg.
45°
37°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Lowestoft
Lowestoft's December 2026 forecast shows daily high temperatures ranging from 43° to 51°, with overnight lows between 37° and 43°. The average high for December is 48° with an average low of 40°. 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 Lowestoft. See also: January | February | March.