S
M
T
W
T
F
S
26
78°
52°
27
78°
60°
28
65°
55°
29
63°
44°
30
66°
40°
1
62°
43°
2
61°
43°
3
76°
43°
4
75°
58°
5
71°
46°
6
61°
44°
7
67°
38°
8
72°
49°
9
78°
50°
10
70°
50°
11
76°
43°
12
81°
51°
13
73°
52°
14
73°
46°
15
83°
55°
16
76°
65°
17
86°
63°
18
77°
63°
19
77°
60°
20
67°
55°
21
69°
51°
22
67°
61°
23
73°
63°
24
81°
58°
25
81°
54°
26
83°
62°
27
86°
62°
28
86°
65°
29
78°
62°
30
82°
62°
31
82°
62°
1
83°
60°
2
82°
59°
3
84°
60°
4
82°
64°
5
83°
65°
6
85°
64°
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 78° to 86°, with overnight lows between 59° and 65°. The average high for May is 83° with an average low of 62°. 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.
