S
M
T
W
T
F
S
26
54°
39°
27
53°
38°
28
55°
39°
29
58°
38°
30
59°
40°
1
59°
40°
2
55°
38°
3
56°
38°
4
56°
37°
5
57°
39°
6
59°
47°
7
69°
45°
8
61°
40°
9
59°
44°
10
60°
39°
11
58°
38°
12
58°
38°
13
59°
39°
14
61°
44°
15
61°
44°
16
62°
50°
17
67°
43°
18
63°
41°
19
62°
41°
20
62°
45°
21
67°
53°
22
73°
54°
23
72°
53°
24
73°
52°
25
66°
53°
26
75°
56°
27
76°
50°
28
65°
46°
29
76°
52°
30
76°
50°
31
72°
50°
1
76°
52°
2
78°
52°
3
76°
56°
4
78°
57°
5
76°
57°
6
71°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Grand Junction
Grand Junction's May 2026 forecast shows daily high temperatures ranging from 53° to 78°, with overnight lows between 37° and 57°. The average high for May is 65° with an average low of 46°. 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 Grand Junction. See also: June | July | August.
