S
M
T
W
T
F
S
26
62°
41°
27
72°
37°
28
71°
40°
29
68°
45°
30
58°
48°
1
64°
41°
2
56°
47°
3
56°
40°
4
71°
40°
5
78°
52°
6
68°
54°
7
62°
43°
8
61°
41°
9
58°
44°
10
70°
53°
11
62°
52°
12
65°
42°
13
67°
47°
14
61°
54°
15
65°
49°
16
78°
48°
17
90°
53°
18
88°
58°
19
N/A
20
93°
58°
21
66°
45°
22
69°
48°
23
59°
51°
24
62°
53°
25
67°
57°
26
78°
59°
27
79°
57°
28
78°
58°
29
80°
58°
30
77°
59°
31
78°
59°
1
79°
60°
2
80°
55°
3
79°
60°
4
80°
59°
5
80°
61°
6
79°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Hartford
Hartford's May 2026 forecast shows daily high temperatures ranging from 59° to 93°, with overnight lows between 45° and 61°. The average high for May is 76° with an average low of 57°. 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.
