S
M
T
W
T
F
S
26
80°
62°
27
82°
58°
28
79°
56°
29
75°
61°
30
80°
60°
31
78°
62°
1
80°
61°
2
82°
56°
3
77°
55°
4
76°
54°
5
77°
55°
6
78°
55°
7
80°
56°
8
76°
55°
9
80°
56°
10
81°
61°
11
82°
57°
12
82°
61°
13
81°
63°
14
84°
62°
15
82°
55°
16
83°
53°
17
75°
53°
18
74°
54°
19
73°
55°
20
72°
53°
21
72°
53°
22
74°
60°
23
73°
61°
24
81°
60°
25
83°
53°
26
82°
50°
27
72°
50°
28
71°
49°
29
71°
54°
30
72°
59°
31
79°
59°
1
79°
58°
2
80°
55°
3
77°
52°
4
77°
56°
5
76°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Gananoque
Gananoque's August 2026 forecast shows daily high temperatures ranging from 71° to 84°, with overnight lows between 49° and 63°. The average high for August is 78° 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 Gananoque. See also: September | October | November.
