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
80°
56°
6
66°
48°
7
62°
42°
8
62°
44°
9
59°
48°
10
68°
57°
11
64°
49°
12
62°
45°
13
63°
50°
14
64°
53°
15
67°
51°
16
67°
53°
17
69°
50°
18
67°
51°
19
74°
54°
20
73°
54°
21
72°
54°
22
73°
51°
23
68°
48°
24
66°
49°
25
68°
49°
26
68°
53°
27
69°
49°
28
68°
50°
29
69°
51°
30
69°
50°
31
70°
58°
1
73°
56°
2
72°
52°
3
71°
56°
4
76°
59°
5
74°
57°
6
73°
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 59° to 80°, with overnight lows between 42° and 59°. The average high for May is 69° with an average low of 52°. 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.
