S
M
T
W
T
F
S
26
59°
44°
27
60°
45°
28
63°
46°
29
67°
46°
30
71°
50°
1
67°
45°
2
65°
47°
3
67°
50°
4
71°
47°
5
67°
54°
6
71°
58°
7
75°
57°
8
69°
55°
9
66°
53°
10
68°
49°
11
66°
48°
12
66°
48°
13
67°
50°
14
68°
54°
15
69°
51°
16
70°
58°
17
75°
54°
18
70°
51°
19
69°
51°
20
70°
52°
21
73°
62°
22
78°
63°
23
79°
61°
24
72°
60°
25
79°
64°
26
81°
64°
27
81°
59°
28
73°
56°
29
84°
62°
30
84°
62°
31
83°
58°
1
82°
57°
2
83°
58°
3
81°
59°
4
77°
63°
5
79°
62°
6
81°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in North Alton
North Alton's May 2026 forecast shows daily high temperatures ranging from 59° to 84°, with overnight lows between 44° and 65°. The average high for May is 73° with an average low of 55°. 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 North Alton. See also: June | July | August.