S
M
T
W
T
F
S
26
51°
35°
27
57°
36°
28
63°
42°
29
63°
30°
30
53°
32°
1
64°
31°
2
74°
38°
3
78°
41°
4
71°
40°
5
44°
37°
6
56°
35°
7
73°
42°
8
79°
46°
9
76°
45°
10
72°
44°
11
71°
45°
12
74°
47°
13
73°
45°
14
79°
54°
15
66°
43°
16
67°
40°
17
68°
41°
18
69°
42°
19
70°
43°
20
71°
46°
21
68°
46°
22
70°
43°
23
71°
43°
24
66°
44°
25
66°
43°
26
68°
42°
27
70°
42°
28
72°
43°
29
78°
47°
30
82°
53°
31
76°
54°
1
79°
52°
2
80°
50°
3
81°
51°
4
84°
52°
5
81°
53°
6
84°
55°
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 44° to 84°, with overnight lows between 31° and 55°. The average high for May is 72° with an average low of 45°. 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.
