S
M
T
W
T
F
S
26
86°
64°
27
84°
64°
28
88°
66°
29
86°
64°
30
89°
56°
31
82°
56°
1
79°
55°
2
77°
53°
3
76°
52°
4
77°
55°
5
80°
57°
6
86°
56°
7
87°
61°
8
86°
60°
9
87°
60°
10
85°
62°
11
85°
56°
12
86°
55°
13
Hist. Avg.
83°
58°
14
Hist. Avg.
83°
58°
15
Hist. Avg.
83°
58°
16
Hist. Avg.
82°
57°
17
Hist. Avg.
82°
57°
18
Hist. Avg.
82°
57°
19
Hist. Avg.
82°
57°
20
Hist. Avg.
82°
56°
21
Hist. Avg.
81°
56°
22
Hist. Avg.
81°
56°
23
Hist. Avg.
81°
56°
24
Hist. Avg.
80°
55°
25
Hist. Avg.
80°
55°
26
Hist. Avg.
80°
55°
27
Hist. Avg.
80°
54°
28
Hist. Avg.
79°
54°
29
Hist. Avg.
79°
54°
30
Hist. Avg.
78°
54°
31
Hist. Avg.
78°
53°
1
Hist. Avg.
78°
53°
2
Hist. Avg.
77°
52°
3
Hist. Avg.
77°
52°
4
Hist. Avg.
77°
52°
5
Hist. Avg.
76°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Geneseo
Geneseo's August 2026 forecast shows daily high temperatures ranging from 76° to 89°, with overnight lows between 52° and 66°. The average high for August is 84° 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 Geneseo. See also: September | October | November.