S
M
T
W
T
F
S
26
55°
28°
27
50°
29°
28
49°
25°
29
54°
28°
30
58°
34°
1
51°
34°
2
50°
31°
3
50°
25°
4
56°
28°
5
60°
31°
6
61°
35°
7
54°
35°
8
57°
36°
9
53°
34°
10
61°
36°
11
55°
32°
12
52°
28°
13
50°
27°
14
52°
27°
15
54°
33°
16
57°
32°
17
55°
37°
18
53°
31°
19
55°
31°
20
63°
35°
21
65°
38°
22
66°
39°
23
67°
39°
24
56°
33°
25
63°
31°
26
60°
36°
27
66°
33°
28
62°
36°
29
67°
38°
30
68°
40°
31
69°
41°
1
69°
39°
2
67°
39°
3
68°
41°
4
71°
41°
5
69°
40°
6
68°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Monarch
Monarch's May 2026 forecast shows daily high temperatures ranging from 49° to 71°, with overnight lows between 25° and 41°. The average high for May is 59° with an average low of 34°. 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 Monarch. See also: June | July | August.