S
M
T
W
T
F
S
29
59°
33°
30
74°
31°
31
76°
41°
1
42°
28°
2
61°
28°
3
52°
36°
4
62°
34°
5
40°
30°
6
46°
22°
7
41°
26°
8
55°
48°
9
63°
40°
10
51°
40°
11
59°
48°
12
62°
47°
13
58°
41°
14
57°
38°
15
56°
39°
16
60°
35°
17
49°
29°
18
53°
35°
19
62°
43°
20
64°
45°
21
65°
45°
22
65°
46°
23
66°
46°
24
66°
45°
25
65°
43°
26
64°
34°
27
52°
33°
28
53°
35°
29
58°
40°
30
55°
38°
1
57°
37°
2
60°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Ithaca
Ithaca's April 2026 forecast shows daily high temperatures ranging from 40° to 66°, with overnight lows between 22° and 48°. The average high for April is 57° with an average low of 39°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how April weather will actually feel in Ithaca. See also: May | June | July.