S
M
T
W
T
F
S
26
84°
59°
27
87°
60°
28
83°
63°
29
88°
65°
30
81°
66°
1
68°
56°
2
75°
50°
3
77°
44°
4
81°
47°
5
84°
50°
6
90°
66°
7
82°
68°
8
77°
64°
9
69°
64°
10
84°
64°
11
87°
65°
12
71°
60°
13
84°
60°
14
84°
55°
15
85°
52°
16
91°
56°
17
90°
67°
18
92°
68°
19
93°
68°
20
92°
71°
21
89°
70°
22
88°
70°
23
89°
69°
24
87°
72°
25
79°
72°
26
89°
71°
27
82°
71°
28
84°
71°
29
82°
71°
30
86°
70°
31
84°
68°
1
84°
67°
2
85°
66°
3
80°
65°
4
78°
66°
5
79°
66°
6
85°
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 78° to 86°, with overnight lows between 65° and 71°. The average high for May is 83° with an average low of 68°. 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.
