S
M
T
W
T
F
S
26
90°
63°
27
88°
63°
28
90°
59°
29
91°
66°
30
88°
70°
1
78°
58°
2
71°
48°
3
75°
48°
4
82°
53°
5
83°
58°
6
86°
68°
7
79°
56°
8
77°
51°
9
81°
56°
10
84°
65°
11
86°
64°
12
86°
64°
13
85°
61°
14
86°
62°
15
87°
65°
16
88°
65°
17
88°
66°
18
87°
66°
19
87°
65°
20
88°
67°
21
88°
67°
22
89°
66°
23
86°
67°
24
84°
67°
25
89°
68°
26
87°
68°
27
85°
67°
28
84°
68°
29
84°
68°
30
85°
67°
31
87°
68°
1
88°
69°
2
88°
69°
3
89°
68°
4
90°
70°
5
89°
69°
6
86°
68°
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 71° to 90°, with overnight lows between 48° and 70°. The average high for May is 85° with an average low of 64°. 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.
