S
M
T
W
T
F
S
30
87°
66°
31
87°
61°
1
81°
53°
2
87°
59°
3
96°
65°
4
85°
63°
5
89°
63°
6
81°
67°
7
83°
64°
8
88°
56°
9
79°
54°
10
85°
47°
11
90°
65°
12
73°
48°
13
70°
47°
14
69°
51°
15
70°
48°
16
66°
49°
17
71°
59°
18
72°
55°
19
73°
52°
20
75°
53°
21
74°
51°
22
75°
55°
23
75°
58°
24
77°
56°
25
78°
52°
26
74°
43°
27
75°
53°
28
63°
51°
29
67°
50°
30
67°
46°
1
72°
49°
2
66°
49°
3
71°
48°
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 63° to 78°, with overnight lows between 43° and 59°. The average high for September is 71° 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.