S
M
T
W
T
F
S
30
93°
69°
31
91°
68°
1
92°
68°
2
91°
69°
3
93°
70°
4
94°
68°
5
95°
66°
6
89°
67°
7
89°
68°
8
94°
69°
9
95°
68°
10
91°
65°
11
91°
68°
12
92°
62°
13
88°
61°
14
86°
60°
15
87°
59°
16
86°
61°
17
90°
60°
18
90°
62°
19
93°
58°
20
93°
57°
21
Hist. Avg.
87°
59°
22
Hist. Avg.
87°
59°
23
Hist. Avg.
86°
58°
24
Hist. Avg.
86°
58°
25
Hist. Avg.
85°
58°
26
Hist. Avg.
85°
57°
27
Hist. Avg.
85°
57°
28
Hist. Avg.
84°
56°
29
Hist. Avg.
84°
56°
30
Hist. Avg.
84°
56°
1
Hist. Avg.
83°
55°
2
Hist. Avg.
83°
55°
3
Hist. Avg.
83°
54°
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 86° to 95°, with overnight lows between 57° and 70°. The average high for September is 91° with an average low of 65°. 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.
