S
M
T
W
T
F
S
26
76°
55°
27
76°
56°
28
75°
55°
29
75°
56°
30
76°
56°
31
77°
57°
1
77°
62°
2
78°
57°
3
79°
57°
4
80°
56°
5
80°
59°
6
82°
63°
7
83°
64°
8
84°
64°
9
80°
58°
10
81°
55°
11
76°
56°
12
75°
54°
13
77°
55°
14
77°
62°
15
77°
56°
16
83°
64°
17
84°
57°
18
80°
59°
19
Hist. Avg.
79°
59°
20
Hist. Avg.
79°
59°
21
Hist. Avg.
78°
59°
22
Hist. Avg.
78°
59°
23
Hist. Avg.
78°
59°
24
Hist. Avg.
78°
58°
25
Hist. Avg.
78°
58°
26
Hist. Avg.
78°
58°
27
Hist. Avg.
78°
58°
28
Hist. Avg.
77°
58°
29
Hist. Avg.
77°
57°
30
Hist. Avg.
77°
57°
31
Hist. Avg.
77°
57°
1
Hist. Avg.
76°
56°
2
Hist. Avg.
76°
56°
3
Hist. Avg.
76°
56°
4
Hist. Avg.
76°
55°
5
Hist. Avg.
75°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Rochester
Rochester's August 2026 forecast shows daily high temperatures ranging from 75° to 84°, with overnight lows between 54° and 64°. The average high for August is 79° with an average low of 58°. 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.