S
M
T
W
T
F
S
29
52°
30°
30
43°
27°
1
42°
30°
2
41°
34°
3
42°
28°
4
42°
24°
5
41°
25°
6
40°
24°
7
40°
24°
8
38°
22°
9
38°
21°
10
36°
20°
11
34°
27°
12
44°
25°
13
38°
27°
14
Hist. Avg.
42°
26°
15
Hist. Avg.
42°
26°
16
Hist. Avg.
41°
26°
17
Hist. Avg.
41°
26°
18
Hist. Avg.
41°
25°
19
Hist. Avg.
41°
25°
20
Hist. Avg.
40°
25°
21
Hist. Avg.
40°
25°
22
Hist. Avg.
40°
24°
23
Hist. Avg.
40°
24°
24
Hist. Avg.
40°
24°
25
Hist. Avg.
39°
24°
26
Hist. Avg.
39°
24°
27
Hist. Avg.
39°
23°
28
Hist. Avg.
39°
23°
29
Hist. Avg.
38°
23°
30
Hist. Avg.
38°
23°
31
Hist. Avg.
38°
22°
1
Hist. Avg.
38°
22°
2
Hist. Avg.
38°
22°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Hartford
Hartford's December 2026 forecast shows daily high temperatures ranging from 34° to 52°, with overnight lows between 20° and 34°. The average high for December is 41° with an average low of 26°. 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.
