S
M
T
W
T
F
S
26
60°
40°
27
57°
36°
28
56°
37°
29
58°
34°
30
62°
32°
1
57°
32°
2
57°
33°
3
55°
34°
4
57°
36°
5
57°
34°
6
58°
34°
7
58°
35°
8
63°
36°
9
60°
36°
10
58°
35°
11
58°
36°
12
60°
38°
13
68°
47°
14
67°
45°
15
62°
45°
16
71°
46°
17
67°
43°
18
65°
40°
19
64°
40°
20
69°
48°
21
70°
43°
22
64°
40°
23
64°
41°
24
65°
41°
25
67°
44°
26
73°
50°
27
75°
50°
28
76°
44°
29
69°
44°
30
70°
48°
31
67°
50°
1
71°
45°
2
69°
44°
3
69°
43°
4
67°
45°
5
69°
47°
6
73°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Greeley
Greeley's May 2026 forecast shows daily high temperatures ranging from 55° to 76°, with overnight lows between 32° and 54°. The average high for May is 64° with an average low of 41°. 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 Greeley. See also: June | July | August.
