S
M
T
W
T
F
S
26
84°
59°
27
75°
66°
28
84°
63°
29
91°
59°
30
88°
68°
1
90°
68°
2
79°
61°
3
75°
57°
4
81°
50°
5
84°
52°
6
91°
57°
7
95°
68°
8
86°
70°
9
82°
64°
10
86°
70°
11
90°
70°
12
75°
72°
13
86°
68°
14
88°
61°
15
86°
54°
16
90°
63°
17
90°
73°
18
88°
61°
19
88°
68°
20
88°
63°
21
91°
66°
22
91°
72°
23
90°
71°
24
90°
73°
25
92°
74°
26
94°
74°
27
94°
73°
28
86°
73°
29
87°
72°
30
85°
73°
31
86°
72°
1
84°
71°
2
85°
70°
3
85°
71°
4
86°
72°
5
87°
71°
6
85°
69°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Denver
Denver's May 2026 forecast shows daily high temperatures ranging from 84° to 94°, with overnight lows between 69° and 74°. The average high for May is 88° with an average low of 72°. 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 Denver. See also: June | July | August.