S
M
T
W
T
F
S
26
70°
59°
27
73°
52°
28
60°
44°
29
62°
41°
30
65°
39°
1
67°
40°
2
65°
38°
3
83°
47°
4
83°
54°
5
56°
45°
6
60°
44°
7
72°
42°
8
71°
51°
9
83°
50°
10
69°
48°
11
79°
45°
12
84°
51°
13
78°
49°
14
82°
55°
15
88°
65°
16
88°
62°
17
86°
66°
18
87°
57°
19
58°
51°
20
65°
50°
21
64°
56°
22
76°
60°
23
74°
54°
24
81°
48°
25
83°
55°
26
83°
60°
27
83°
62°
28
77°
67°
29
84°
69°
30
80°
68°
31
90°
66°
1
92°
69°
2
84°
64°
3
81°
64°
4
83°
66°
5
80°
66°
6
82°
65°
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 80° to 92°, with overnight lows between 64° and 69°. The average high for May is 84° with an average low of 66°. 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.
