S
M
T
W
T
F
S
26
61°
38°
27
64°
39°
28
63°
40°
29
59°
45°
30
63°
44°
1
58°
41°
2
58°
42°
3
69°
47°
4
71°
49°
5
70°
50°
6
71°
48°
7
61°
44°
8
66°
48°
9
63°
45°
10
62°
42°
11
60°
40°
12
61°
40°
13
65°
49°
14
62°
46°
15
64°
45°
16
67°
51°
17
69°
45°
18
63°
42°
19
64°
45°
20
68°
53°
21
65°
49°
22
66°
45°
23
64°
48°
24
67°
53°
25
74°
55°
26
71°
51°
27
66°
49°
28
68°
54°
29
74°
54°
30
76°
56°
31
77°
57°
1
78°
56°
2
82°
59°
3
81°
58°
4
81°
58°
5
77°
54°
6
80°
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 58° to 82°, with overnight lows between 38° and 59°. The average high for May is 68° with an average low of 48°. 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.
