S
M
T
W
T
F
S
30
69°
37°
31
71°
41°
1
72°
42°
2
72°
38°
3
71°
37°
4
69°
44°
5
75°
48°
6
Hist. Avg.
74°
42°
7
Hist. Avg.
74°
42°
8
Hist. Avg.
73°
42°
9
Hist. Avg.
73°
41°
10
Hist. Avg.
73°
41°
11
Hist. Avg.
72°
41°
12
Hist. Avg.
72°
40°
13
Hist. Avg.
71°
40°
14
Hist. Avg.
71°
40°
15
Hist. Avg.
70°
40°
16
Hist. Avg.
70°
39°
17
Hist. Avg.
70°
39°
18
Hist. Avg.
69°
39°
19
Hist. Avg.
69°
38°
20
Hist. Avg.
68°
38°
21
Hist. Avg.
68°
38°
22
Hist. Avg.
67°
38°
23
Hist. Avg.
67°
37°
24
Hist. Avg.
66°
37°
25
Hist. Avg.
66°
36°
26
Hist. Avg.
65°
36°
27
Hist. Avg.
65°
36°
28
Hist. Avg.
64°
36°
29
Hist. Avg.
64°
35°
30
Hist. Avg.
63°
35°
1
Hist. Avg.
63°
34°
2
Hist. Avg.
62°
34°
3
Hist. Avg.
62°
34°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Dillon
Dillon's September 2026 forecast shows daily high temperatures ranging from 69° to 75°, with overnight lows between 37° and 48°. The average high for September is 71° with an average low of 41°. 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.
