S
M
T
W
T
F
S
26
65°
46°
27
74°
48°
28
66°
52°
29
62°
45°
30
56°
41°
1
51°
39°
2
48°
33°
3
60°
34°
4
74°
46°
5
66°
45°
6
55°
43°
7
58°
37°
8
67°
46°
9
73°
54°
10
66°
52°
11
70°
40°
12
74°
40°
13
61°
46°
14
64°
42°
15
65°
41°
16
76°
56°
17
84°
62°
18
86°
66°
19
85°
67°
20
70°
53°
21
65°
49°
22
63°
51°
23
70°
59°
24
76°
59°
25
76°
60°
26
77°
65°
27
76°
59°
28
79°
57°
29
76°
53°
30
72°
50°
31
68°
52°
1
73°
54°
2
72°
57°
3
73°
56°
4
74°
59°
5
76°
57°
6
75°
61°
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 68° to 79°, with overnight lows between 50° and 65°. The average high for May is 74° with an average low of 57°. 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.
