S
M
T
W
T
F
S
26
81°
63°
27
86°
73°
28
82°
70°
29
71°
61°
30
67°
55°
1
68°
53°
2
74°
48°
3
80°
45°
4
80°
51°
5
80°
64°
6
76°
52°
7
72°
50°
8
78°
49°
9
85°
58°
10
81°
63°
11
77°
53°
12
81°
48°
13
88°
61°
14
84°
64°
15
92°
67°
16
88°
69°
17
90°
73°
18
87°
68°
19
80°
66°
20
76°
64°
21
82°
62°
22
81°
58°
23
81°
57°
24
83°
61°
25
84°
63°
26
85°
61°
27
85°
65°
28
86°
64°
29
84°
65°
30
80°
65°
31
83°
64°
1
82°
65°
2
83°
65°
3
84°
66°
4
87°
66°
5
88°
67°
6
84°
67°
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 76° to 92°, with overnight lows between 57° and 73°. The average high for May is 84° with an average low of 65°. 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.
