S
M
T
W
T
F
S
26
84°
48°
27
88°
47°
28
87°
49°
29
87°
44°
30
80°
47°
31
83°
45°
1
81°
42°
2
83°
45°
3
82°
43°
4
83°
48°
5
86°
45°
6
86°
50°
7
88°
48°
8
87°
47°
9
89°
46°
10
82°
42°
11
87°
37°
12
76°
34°
13
73°
35°
14
76°
34°
15
75°
36°
16
78°
43°
17
84°
46°
18
85°
47°
19
86°
43°
20
84°
46°
21
85°
39°
22
80°
34°
23
73°
38°
24
78°
43°
25
72°
35°
26
71°
34°
27
73°
34°
28
71°
33°
29
71°
34°
30
72°
33°
31
70°
38°
1
75°
33°
2
70°
37°
3
78°
39°
4
80°
42°
5
81°
40°
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 70° to 89°, with overnight lows between 33° and 50°. The average high for August is 80° with an average low of 41°. 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.