S
M
T
W
T
F
S
30
83°
59°
31
85°
61°
1
86°
58°
2
81°
57°
3
80°
64°
4
85°
63°
5
86°
63°
6
87°
57°
7
80°
56°
8
80°
62°
9
82°
61°
10
83°
61°
11
82°
62°
12
82°
60°
13
80°
53°
14
77°
53°
15
77°
54°
16
78°
53°
17
77°
57°
18
82°
59°
19
82°
59°
20
83°
58°
21
81°
57°
22
82°
59°
23
81°
50°
24
82°
49°
25
74°
48°
26
74°
51°
27
81°
56°
28
78°
55°
29
80°
56°
30
Hist. Avg.
76°
50°
1
Hist. Avg.
75°
50°
2
Hist. Avg.
75°
50°
3
Hist. Avg.
74°
49°
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 74° to 87°, with overnight lows between 48° and 64°. The average high for September is 81° with an average low of 57°. 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.
