S
M
T
W
T
F
S
26
67°
50°
27
70°
46°
28
75°
48°
29
81°
48°
30
86°
51°
1
84°
54°
2
77°
55°
3
69°
54°
4
62°
53°
5
68°
53°
6
74°
59°
7
83°
56°
8
86°
55°
9
88°
58°
10
88°
58°
11
93°
57°
12
93°
59°
13
82°
57°
14
90°
54°
15
90°
57°
16
82°
63°
17
78°
59°
18
85°
53°
19
89°
54°
20
91°
53°
21
92°
57°
22
92°
60°
23
86°
56°
24
86°
55°
25
76°
54°
26
73°
51°
27
71°
56°
28
77°
57°
29
81°
55°
30
86°
54°
31
86°
61°
1
91°
62°
2
98°
63°
3
92°
61°
4
90°
63°
5
88°
60°
6
84°
59°
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 71° to 98°, with overnight lows between 51° and 63°. The average high for May is 85° with an average low of 59°. 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.
