S
M
T
W
T
F
S
26
66°
47°
27
67°
47°
28
62°
46°
29
56°
44°
30
55°
38°
1
49°
32°
2
51°
28°
3
62°
35°
4
75°
47°
5
57°
46°
6
55°
39°
7
58°
35°
8
64°
37°
9
70°
43°
10
62°
39°
11
63°
38°
12
64°
38°
13
60°
42°
14
67°
42°
15
68°
40°
16
80°
55°
17
85°
59°
18
83°
66°
19
83°
61°
20
67°
53°
21
66°
47°
22
72°
49°
23
60°
55°
24
68°
50°
25
79°
50°
26
80°
52°
27
85°
54°
28
77°
56°
29
82°
47°
30
74°
54°
31
76°
46°
1
78°
53°
2
78°
48°
3
81°
48°
4
85°
53°
5
80°
65°
6
84°
65°
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.