S
M
T
W
T
F
S
30
90°
70°
31
86°
70°
1
84°
69°
2
84°
70°
3
88°
70°
4
88°
69°
5
87°
69°
6
83°
68°
7
84°
68°
8
87°
69°
9
87°
68°
10
86°
68°
11
83°
67°
12
86°
67°
13
83°
66°
14
80°
66°
15
80°
67°
16
81°
66°
17
77°
65°
18
79°
65°
19
82°
64°
20
82°
65°
21
84°
57°
22
82°
61°
23
81°
56°
24
82°
52°
25
82°
51°
26
81°
61°
27
81°
63°
28
86°
61°
29
82°
63°
30
80°
60°
1
84°
59°
2
71°
59°
3
74°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Springdale
Springdale's September 2026 forecast shows daily high temperatures ranging from 71° to 90°, with overnight lows between 51° and 70°. The average high for September is 83° with an average low of 64°. 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 Springdale. See also: October | November | December.