S
M
T
W
T
F
S
30
88°
64°
31
88°
64°
1
87°
63°
2
88°
65°
3
87°
64°
4
87°
63°
5
86°
64°
6
87°
62°
7
86°
60°
8
78°
59°
9
81°
59°
10
83°
61°
11
85°
59°
12
82°
58°
13
72°
56°
14
68°
54°
15
70°
56°
16
76°
54°
17
71°
48°
18
83°
46°
19
84°
41°
20
76°
40°
21
65°
42°
22
70°
49°
23
73°
53°
24
78°
54°
25
79°
55°
26
78°
49°
27
76°
41°
28
73°
35°
29
61°
34°
30
59°
33°
1
58°
39°
2
63°
48°
3
66°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Atkinson
Atkinson's September 2026 forecast shows daily high temperatures ranging from 58° to 88°, with overnight lows between 33° and 65°. The average high for September is 77° with an average low of 53°. 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 Atkinson. See also: October | November | December.