S
M
T
W
T
F
S
26
79°
60°
27
81°
61°
28
82°
62°
29
81°
62°
30
82°
63°
31
81°
62°
1
80°
61°
2
76°
58°
3
75°
54°
4
75°
58°
5
74°
55°
6
75°
56°
7
77°
59°
8
80°
60°
9
81°
61°
10
81°
61°
11
80°
60°
12
80°
59°
13
81°
60°
14
84°
60°
15
83°
61°
16
79°
62°
17
77°
60°
18
83°
62°
19
81°
58°
20
79°
53°
21
77°
51°
22
74°
51°
23
75°
53°
24
75°
54°
25
76°
51°
26
74°
57°
27
75°
53°
28
74°
51°
29
73°
50°
30
74°
50°
31
73°
49°
1
73°
50°
2
74°
51°
3
72°
51°
4
70°
50°
5
74°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Northwest Ithaca
Northwest Ithaca's August 2026 forecast shows daily high temperatures ranging from 70° to 84°, with overnight lows between 49° and 63°. The average high for August is 77° with an average low of 56°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Northwest Ithaca. See also: September | October | November.