S
M
T
W
T
F
S
26
60°
44°
27
74°
44°
28
71°
54°
29
58°
45°
30
54°
39°
1
49°
37°
2
45°
32°
3
59°
32°
4
72°
46°
5
68°
50°
6
59°
39°
7
56°
41°
8
62°
51°
9
71°
51°
10
67°
42°
11
56°
40°
12
59°
47°
13
63°
51°
14
70°
53°
15
69°
50°
16
67°
49°
17
67°
51°
18
69°
52°
19
71°
50°
20
66°
45°
21
65°
46°
22
66°
47°
23
67°
50°
24
68°
49°
25
68°
48°
26
69°
48°
27
70°
47°
28
69°
48°
29
74°
53°
30
76°
56°
31
75°
58°
1
75°
56°
2
76°
52°
3
79°
58°
4
80°
59°
5
80°
60°
6
79°
59°
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 56° to 80°, with overnight lows between 39° and 60°. The average high for May is 69° 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.
