S
M
T
W
T
F
S
26
65°
57°
27
68°
58°
28
68°
55°
29
69°
49°
30
69°
49°
31
75°
60°
1
67°
54°
2
70°
53°
3
75°
53°
4
80°
55°
5
71°
58°
6
68°
58°
7
69°
56°
8
71°
58°
9
69°
56°
10
70°
57°
11
71°
55°
12
69°
56°
13
71°
55°
14
72°
55°
15
69°
54°
16
64°
51°
17
64°
50°
18
70°
55°
19
71°
55°
20
72°
57°
21
72°
57°
22
71°
58°
23
73°
57°
24
72°
54°
25
71°
55°
26
72°
54°
27
67°
55°
28
65°
54°
29
66°
53°
30
66°
54°
31
72°
57°
1
73°
57°
2
72°
56°
3
72°
54°
4
71°
56°
5
69°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Olney
Olney's August 2026 forecast shows daily high temperatures ranging from 64° to 80°, with overnight lows between 50° and 60°. The average high for August is 70° with an average low of 55°. 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 Olney. See also: September | October | November.