S
M
T
W
T
F
S
26
71°
52°
27
73°
46°
28
64°
43°
29
62°
42°
30
58°
39°
1
56°
38°
2
54°
37°
3
60°
43°
4
67°
51°
5
64°
49°
6
64°
49°
7
67°
45°
8
60°
41°
9
61°
42°
10
61°
45°
11
64°
52°
12
70°
52°
13
67°
48°
14
62°
46°
15
62°
44°
16
63°
44°
17
63°
46°
18
64°
44°
19
65°
45°
20
64°
45°
21
66°
46°
22
69°
55°
23
70°
49°
24
67°
46°
25
66°
47°
26
66°
47°
27
67°
49°
28
68°
49°
29
69°
54°
30
69°
53°
31
70°
55°
1
73°
54°
2
76°
57°
3
79°
59°
4
79°
59°
5
83°
60°
6
75°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Sycamore
Sycamore's May 2026 forecast shows daily high temperatures ranging from 54° to 83°, with overnight lows between 37° and 62°. The average high for May is 67° with an average low of 48°. 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 Sycamore. See also: June | July | August.
