S
M
T
W
T
F
S
30
90°
66°
31
87°
63°
1
84°
62°
2
83°
63°
3
84°
65°
4
87°
68°
5
89°
66°
6
89°
65°
7
88°
66°
8
85°
62°
9
82°
60°
10
82°
61°
11
83°
60°
12
81°
59°
13
80°
60°
14
79°
59°
15
80°
60°
16
81°
59°
17
82°
60°
18
83°
60°
19
85°
64°
20
84°
59°
21
83°
56°
22
Hist. Avg.
80°
58°
23
Hist. Avg.
80°
58°
24
Hist. Avg.
80°
57°
25
Hist. Avg.
79°
57°
26
Hist. Avg.
79°
56°
27
Hist. Avg.
79°
56°
28
Hist. Avg.
78°
56°
29
Hist. Avg.
78°
55°
30
Hist. Avg.
78°
55°
1
Hist. Avg.
77°
54°
2
Hist. Avg.
77°
54°
3
Hist. Avg.
77°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Olyphant
Olyphant's September 2026 forecast shows daily high temperatures ranging from 79° to 90°, with overnight lows between 56° and 68°. The average high for September is 84° with an average low of 62°. 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 Olyphant. See also: October | November | December.