S
M
T
W
T
F
S
26
69°
45°
27
61°
46°
28
53°
42°
29
62°
37°
30
58°
40°
1
60°
38°
2
71°
29°
3
77°
51°
4
83°
42°
5
60°
45°
6
63°
35°
7
74°
45°
8
82°
49°
9
80°
43°
10
77°
40°
11
87°
41°
12
84°
54°
13
82°
43°
14
84°
50°
15
94°
53°
16
88°
54°
17
84°
61°
18
59°
51°
19
61°
45°
20
59°
41°
21
67°
48°
22
75°
56°
23
77°
48°
24
84°
52°
25
90°
60°
26
88°
58°
27
86°
61°
28
84°
64°
29
80°
58°
30
80°
54°
31
81°
54°
1
79°
55°
2
80°
53°
3
79°
57°
4
82°
58°
5
80°
58°
6
83°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Ithaca
Ithaca's May 2026 forecast shows daily high temperatures ranging from 79° to 90°, with overnight lows between 53° and 64°. The average high for May is 82° with an average low of 58°. 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 Ithaca. See also: June | July | August.
