S
M
T
W
T
F
S
30
72°
33°
31
70°
38°
1
75°
33°
2
70°
37°
3
78°
39°
4
80°
42°
5
81°
40°
6
78°
32°
7
67°
40°
8
74°
37°
9
65°
38°
10
68°
39°
11
66°
40°
12
67°
39°
13
65°
38°
14
70°
32°
15
63°
26°
16
62°
28°
17
Hist. Avg.
70°
38°
18
Hist. Avg.
70°
38°
19
Hist. Avg.
69°
38°
20
Hist. Avg.
69°
37°
21
Hist. Avg.
68°
37°
22
Hist. Avg.
68°
37°
23
Hist. Avg.
67°
36°
24
Hist. Avg.
67°
36°
25
Hist. Avg.
66°
36°
26
Hist. Avg.
66°
35°
27
Hist. Avg.
65°
35°
28
Hist. Avg.
65°
35°
29
Hist. Avg.
64°
34°
30
Hist. Avg.
64°
34°
1
Hist. Avg.
63°
34°
2
Hist. Avg.
62°
33°
3
Hist. Avg.
62°
33°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Olney
Olney's September 2026 forecast shows daily high temperatures ranging from 62° to 81°, with overnight lows between 26° and 42°. The average high for September is 71° with an average low of 36°. 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.
