S
M
T
W
T
F
S
26
79°
65°
27
82°
67°
28
78°
67°
29
80°
66°
30
82°
68°
31
82°
68°
1
81°
67°
2
78°
67°
3
77°
66°
4
78°
67°
5
79°
66°
6
78°
66°
7
78°
66°
8
79°
67°
9
78°
66°
10
77°
66°
11
77°
65°
12
78°
63°
13
76°
62°
14
77°
65°
15
77°
65°
16
76°
64°
17
76°
63°
18
77°
63°
19
78°
65°
20
77°
64°
21
83°
59°
22
82°
58°
23
81°
58°
24
77°
57°
25
76°
60°
26
77°
58°
27
81°
57°
28
75°
62°
29
75°
63°
30
83°
56°
31
78°
55°
1
75°
56°
2
76°
62°
3
76°
56°
4
79°
62°
5
76°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Rochester
Rochester's August 2026 forecast shows daily high temperatures ranging from 75° to 83°, with overnight lows between 55° and 68°. The average high for August is 78° with an average low of 63°. 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 Rochester. See also: September | October | November.
