S
M
T
W
T
F
S
30
69°
54°
31
72°
56°
1
73°
56°
2
72°
57°
3
73°
57°
4
72°
55°
5
72°
53°
6
72°
53°
7
73°
55°
8
72°
56°
9
66°
55°
10
65°
51°
11
64°
50°
12
63°
48°
13
64°
51°
14
67°
54°
15
63°
46°
16
63°
47°
17
64°
54°
18
64°
54°
19
67°
55°
20
72°
51°
21
63°
44°
22
61°
46°
23
63°
50°
24
65°
53°
25
68°
54°
26
69°
55°
27
70°
54°
28
71°
53°
29
70°
45°
30
62°
49°
1
64°
51°
2
67°
46°
3
59°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Olney
Olney's September 2026 forecast shows daily high temperatures ranging from 59° to 73°, with overnight lows between 42° and 57°. The average high for September is 67° with an average low of 52°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Olney. See also: October | November | December.
