S
M
T
W
T
F
S
30
77°
60°
31
78°
60°
1
80°
59°
2
78°
61°
3
79°
61°
4
77°
60°
5
73°
60°
6
76°
61°
7
73°
55°
8
71°
48°
9
80°
44°
10
73°
48°
11
69°
56°
12
74°
49°
13
74°
42°
14
70°
43°
15
67°
44°
16
69°
47°
17
68°
53°
18
67°
53°
19
73°
54°
20
77°
55°
21
77°
55°
22
79°
54°
23
80°
55°
24
78°
54°
25
79°
43°
26
76°
39°
27
67°
37°
28
61°
41°
29
63°
38°
30
62°
47°
1
64°
42°
2
65°
45°
3
68°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Dawson
Dawson's September 2026 forecast shows daily high temperatures ranging from 61° to 80°, with overnight lows between 37° and 61°. The average high for September is 73° with an average low of 51°. 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 Dawson. See also: October | November | December.