S
M
T
W
T
F
S
30
86°
71°
31
91°
70°
1
94°
72°
2
95°
72°
3
93°
72°
4
95°
72°
5
98°
72°
6
89°
69°
7
84°
65°
8
86°
66°
9
87°
68°
10
86°
71°
11
88°
68°
12
88°
69°
13
88°
66°
14
90°
68°
15
90°
67°
16
85°
60°
17
84°
63°
18
84°
63°
19
85°
62°
20
82°
65°
21
87°
66°
22
86°
65°
23
85°
65°
24
84°
64°
25
85°
64°
26
86°
65°
27
86°
64°
28
85°
64°
29
84°
63°
30
84°
63°
1
83°
62°
2
83°
63°
3
84°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Dillon
Dillon's September 2026 forecast shows daily high temperatures ranging from 82° to 90°, with overnight lows between 60° and 71°. The average high for September is 86° 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 Dillon. See also: October | November | December.
