S
M
T
W
T
F
S
26
58°
35°
27
73°
33°
28
61°
48°
29
58°
41°
30
53°
31°
1
47°
32°
2
47°
33°
3
51°
41°
4
57°
41°
5
59°
49°
6
60°
41°
7
57°
42°
8
56°
41°
9
53°
42°
10
58°
41°
11
57°
49°
12
64°
48°
13
62°
41°
14
59°
39°
15
59°
38°
16
60°
40°
17
60°
40°
18
61°
41°
19
70°
45°
20
62°
41°
21
61°
41°
22
62°
40°
23
62°
41°
24
64°
46°
25
70°
50°
26
65°
43°
27
62°
43°
28
64°
44°
29
67°
49°
30
74°
50°
31
71°
47°
1
72°
52°
2
75°
55°
3
76°
55°
4
77°
51°
5
68°
46°
6
67°
46°
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 47° to 77°, with overnight lows between 31° and 55°. The average high for May is 62° with an average low of 44°. 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.
