S
M
T
W
T
F
S
29
53°
34°
30
43°
30°
1
45°
36°
2
46°
35°
3
45°
36°
4
51°
34°
5
43°
33°
6
42°
27°
7
39°
25°
8
38°
28°
9
39°
28°
10
37°
29°
11
43°
34°
12
48°
34°
13
48°
33°
14
47°
33°
15
43°
34°
16
46°
33°
17
48°
33°
18
35°
18°
19
34°
21°
20
38°
22°
21
37°
26°
22
42°
24°
23
39°
30°
24
41°
22°
25
43°
18°
26
34°
29°
27
41°
30°
28
49°
28°
29
45°
18°
30
41°
16°
31
32°
21°
1
32°
15°
2
38°
14°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Hartford
Hartford's December 2026 forecast shows daily high temperatures ranging from 32° to 53°, with overnight lows between 14° and 36°. The average high for December is 42° with an average low of 27°. 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 Hartford. See also: January | February | March.
