S
M
T
W
T
F
S
26
59°
43°
27
63°
45°
28
64°
52°
29
48°
39°
30
52°
34°
1
46°
32°
2
57°
32°
3
70°
52°
4
81°
45°
5
59°
41°
6
54°
34°
7
55°
34°
8
70°
34°
9
68°
41°
10
61°
34°
11
54°
36°
12
77°
34°
13
63°
41°
14
68°
36°
15
81°
54°
16
86°
61°
17
63°
50°
18
84°
59°
19
77°
54°
20
59°
46°
21
57°
45°
22
64°
46°
23
72°
52°
24
79°
54°
25
86°
54°
26
90°
66°
27
83°
50°
28
72°
43°
29
80°
53°
30
71°
48°
31
72°
53°
1
76°
46°
2
77°
50°
3
81°
52°
4
76°
53°
5
76°
54°
6
77°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Hartford
Hartford's May 2026 forecast shows daily high temperatures ranging from 71° to 83°, with overnight lows between 43° and 54°. The average high for May is 76° with an average low of 50°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Hartford. See also: June | July | August.
