S
M
T
W
T
F
S
26
63°
43°
27
72°
40°
28
74°
50°
29
56°
46°
30
52°
34°
1
44°
34°
2
44°
34°
3
61°
31°
4
72°
48°
5
70°
49°
6
56°
40°
7
56°
40°
8
59°
48°
9
68°
50°
10
58°
38°
11
54°
35°
12
54°
46°
13
58°
40°
14
60°
43°
15
67°
47°
16
64°
45°
17
64°
45°
18
65°
47°
19
70°
46°
20
65°
42°
21
66°
43°
22
65°
45°
23
67°
47°
24
67°
45°
25
68°
46°
26
68°
45°
27
69°
44°
28
69°
47°
29
72°
47°
30
74°
50°
31
76°
55°
1
74°
52°
2
72°
50°
3
78°
55°
4
79°
56°
5
79°
57°
6
80°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Niles
Niles's May 2026 forecast shows daily high temperatures ranging from 54° to 80°, with overnight lows between 35° and 57°. The average high for May is 67° with an average low of 47°. 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 Niles. See also: June | July | August.