S
M
T
W
T
F
S
26
60°
48°
27
68°
49°
28
71°
47°
29
65°
43°
30
64°
45°
1
68°
49°
2
66°
43°
3
68°
48°
4
72°
50°
5
73°
52°
6
73°
53°
7
74°
54°
8
75°
54°
9
75°
53°
10
66°
50°
11
65°
53°
12
66°
54°
13
74°
53°
14
70°
48°
15
69°
50°
16
74°
55°
17
76°
57°
18
74°
49°
19
76°
48°
20
69°
47°
21
68°
50°
22
70°
49°
23
68°
50°
24
69°
51°
25
70°
58°
26
78°
56°
27
79°
59°
28
73°
61°
29
83°
57°
30
83°
51°
31
73°
54°
1
75°
55°
2
78°
57°
3
83°
59°
4
82°
53°
5
83°
52°
6
73°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Monmouth
Monmouth's May 2026 forecast shows daily high temperatures ranging from 60° to 83°, with overnight lows between 43° and 61°. The average high for May is 72° with an average low of 52°. 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 Monmouth. See also: June | July | August.
