S
M
T
W
T
F
S
26
70°
45°
27
64°
51°
28
62°
46°
29
54°
37°
30
55°
29°
1
51°
31°
2
62°
31°
3
72°
45°
4
77°
44°
5
55°
39°
6
49°
31°
7
58°
28°
8
71°
31°
9
64°
38°
10
62°
32°
11
62°
29°
12
78°
43°
13
67°
40°
14
73°
34°
15
83°
50°
16
84°
56°
17
60°
49°
18
80°
59°
19
67°
45°
20
63°
46°
21
57°
46°
22
64°
47°
23
73°
54°
24
78°
49°
25
83°
64°
26
88°
68°
27
88°
62°
28
80°
52°
29
82°
47°
30
76°
49°
31
78°
50°
1
77°
54°
2
80°
47°
3
83°
43°
4
85°
57°
5
82°
61°
6
85°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Quincy
Quincy's May 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for May is ° with an average low of °. 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 Quincy. See also: June | July | August.