S
M
T
W
T
F
S
30
90°
67°
31
89°
66°
1
88°
68°
2
90°
66°
3
89°
65°
4
86°
66°
5
86°
65°
6
89°
68°
7
89°
69°
8
88°
67°
9
88°
67°
10
87°
66°
11
89°
67°
12
89°
68°
13
88°
67°
14
88°
67°
15
87°
65°
16
87°
65°
17
86°
64°
18
87°
62°
19
84°
64°
20
85°
65°
21
86°
65°
22
84°
64°
23
86°
63°
24
84°
64°
25
84°
62°
26
85°
64°
27
83°
62°
28
81°
62°
29
Hist. Avg.
85°
61°
30
Hist. Avg.
84°
61°
1
Hist. Avg.
84°
60°
2
Hist. Avg.
84°
60°
3
Hist. Avg.
83°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Dawson
Dawson's September 2026 forecast shows daily high temperatures ranging from 81° to 90°, with overnight lows between 62° and 69°. The average high for September is 87° 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 Dawson. See also: October | November | December.