S
M
T
W
T
F
S
30
86°
70°
31
86°
70°
1
88°
68°
2
88°
66°
3
88°
73°
4
90°
70°
5
84°
68°
6
81°
66°
7
79°
64°
8
77°
68°
9
81°
59°
10
81°
55°
11
82°
57°
12
72°
55°
13
64°
52°
14
72°
54°
15
70°
59°
16
72°
55°
17
73°
63°
18
75°
63°
19
68°
59°
20
63°
59°
21
59°
54°
22
57°
54°
23
70°
50°
24
63°
58°
25
62°
59°
26
66°
59°
27
68°
57°
28
72°
61°
29
69°
55°
30
68°
53°
1
70°
52°
2
69°
54°
3
66°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Arthur
Arthur's September 2026 forecast shows daily high temperatures ranging from 62° to 72°, with overnight lows between 46° and 61°. The average high for September is 67° with an average low of 55°. 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 Arthur. See also: October | November | December.
