S
M
T
W
T
F
S
26
60°
41°
27
67°
43°
28
72°
47°
29
73°
46°
30
75°
49°
1
80°
50°
2
82°
52°
3
81°
49°
4
75°
44°
5
73°
49°
6
70°
40°
7
68°
44°
8
68°
41°
9
70°
47°
10
71°
45°
11
72°
47°
12
72°
44°
13
76°
48°
14
79°
51°
15
78°
50°
16
73°
42°
17
72°
43°
18
76°
47°
19
83°
52°
20
84°
55°
21
84°
54°
22
83°
53°
23
80°
52°
24
79°
53°
25
80°
53°
26
78°
51°
27
77°
49°
28
75°
45°
29
75°
50°
30
78°
54°
31
86°
55°
1
81°
47°
2
81°
48°
3
84°
52°
4
86°
51°
5
87°
53°
6
88°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Dewey
Dewey's May 2026 forecast shows daily high temperatures ranging from 60° to 88°, with overnight lows between 40° and 55°. The average high for May is 77° with an average low of 49°. 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 Dewey. See also: June | July | August.
