S
M
T
W
T
F
S
30
80°
47°
31
82°
50°
1
87°
57°
2
90°
58°
3
91°
51°
4
81°
45°
5
79°
48°
6
78°
53°
7
78°
50°
8
82°
49°
9
81°
52°
10
81°
45°
11
78°
47°
12
80°
49°
13
78°
44°
14
76°
42°
15
73°
40°
16
74°
39°
17
73°
41°
18
74°
44°
19
77°
49°
20
84°
45°
21
82°
45°
22
78°
42°
23
72°
40°
24
69°
39°
25
68°
41°
26
69°
39°
27
70°
40°
28
71°
42°
29
74°
43°
30
77°
45°
1
Hist. Avg.
74°
43°
2
Hist. Avg.
74°
43°
3
Hist. Avg.
73°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Basin City
Basin City's September 2026 forecast shows daily high temperatures ranging from 68° to 91°, with overnight lows between 39° and 58°. The average high for September is 78° with an average low of 46°. 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 Basin City. See also: October | November | December.
