S
M
T
W
T
F
S
26
64°
45°
27
80°
40°
28
78°
55°
29
69°
52°
30
59°
37°
1
61°
35°
2
56°
30°
3
63°
28°
4
77°
42°
5
74°
57°
6
64°
49°
7
64°
39°
8
72°
40°
9
74°
50°
10
74°
49°
11
72°
46°
12
76°
39°
13
75°
46°
14
63°
41°
15
69°
38°
16
72°
46°
17
90°
64°
18
91°
69°
19
88°
68°
20
73°
54°
21
65°
58°
22
75°
61°
23
76°
65°
24
78°
64°
25
79°
65°
26
79°
61°
27
79°
62°
28
78°
59°
29
79°
60°
30
80°
56°
31
79°
60°
1
80°
61°
2
81°
61°
3
80°
60°
4
75°
56°
5
75°
56°
6
79°
62°
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 65° to 91°, with overnight lows between 54° and 69°. The average high for May is 79° with an average low of 61°. 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.
