S
M
T
W
T
F
S
26
71°
51°
27
69°
52°
28
71°
53°
29
77°
57°
30
76°
58°
1
73°
57°
2
69°
57°
3
67°
53°
4
68°
48°
5
69°
56°
6
77°
59°
7
78°
60°
8
76°
58°
9
72°
55°
10
69°
53°
11
70°
56°
12
71°
57°
13
72°
59°
14
79°
61°
15
80°
61°
16
76°
60°
17
77°
61°
18
75°
58°
19
72°
53°
20
72°
56°
21
76°
61°
22
76°
55°
23
76°
55°
24
77°
57°
25
76°
56°
26
73°
57°
27
75°
58°
28
77°
62°
29
84°
63°
30
79°
56°
31
79°
56°
1
77°
57°
2
78°
58°
3
81°
63°
4
83°
65°
5
85°
65°
6
86°
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 67° to 86°, with overnight lows between 48° and 65°. The average high for May is 75° with an average low of 58°. 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.
