S
M
T
W
T
F
S
29
59°
36°
30
56°
34°
1
55°
36°
2
59°
35°
3
57°
35°
4
47°
34°
5
46°
34°
6
50°
35°
7
46°
35°
8
46°
34°
9
47°
33°
10
43°
30°
11
43°
29°
12
53°
33°
13
54°
33°
14
55°
32°
15
55°
33°
16
53°
35°
17
56°
34°
18
55°
33°
19
54°
31°
20
46°
31°
21
53°
32°
22
55°
32°
23
51°
31°
24
52°
32°
25
40°
24°
26
42°
24°
27
42°
18°
28
43°
17°
29
42°
23°
30
44°
18°
31
46°
22°
1
42°
25°
2
44°
18°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Fargo
Fargo's December 2026 forecast shows daily high temperatures ranging from 40° to 59°, with overnight lows between 17° and 36°. The average high for December is 49° with an average low of 30°. 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 Fargo. See also: January | February | March.