S
M
T
W
T
F
S
26
67°
52°
27
69°
47°
28
64°
46°
29
58°
37°
30
56°
39°
1
53°
35°
2
58°
41°
3
66°
43°
4
62°
44°
5
58°
45°
6
61°
45°
7
65°
46°
8
62°
45°
9
68°
46°
10
61°
45°
11
61°
49°
12
63°
46°
13
62°
42°
14
62°
43°
15
63°
44°
16
66°
47°
17
67°
52°
18
72°
54°
19
73°
50°
20
69°
49°
21
66°
48°
22
66°
48°
23
73°
56°
24
76°
57°
25
76°
56°
26
72°
51°
27
69°
50°
28
72°
56°
29
76°
58°
30
79°
58°
31
79°
59°
1
78°
59°
2
81°
60°
3
80°
60°
4
79°
55°
5
71°
54°
6
74°
60°
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 53° to 81°, with overnight lows between 35° and 60°. The average high for May is 68° with an average low of 49°. 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.
