S
M
T
W
T
F
S
30
86°
55°
31
78°
58°
1
78°
62°
2
79°
58°
3
82°
56°
4
83°
62°
5
85°
60°
6
86°
54°
7
76°
53°
8
76°
51°
9
77°
54°
10
82°
58°
11
81°
53°
12
75°
52°
13
74°
51°
14
77°
58°
15
80°
57°
16
81°
50°
17
75°
49°
18
71°
48°
19
72°
50°
20
72°
53°
21
70°
55°
22
70°
50°
23
70°
54°
24
70°
48°
25
73°
56°
26
76°
56°
27
77°
47°
28
75°
48°
29
69°
54°
30
73°
55°
1
68°
54°
2
70°
52°
3
67°
45°
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 67° to 86°, with overnight lows between 45° and 62°. The average high for September is 76° with an average low of 54°. 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.