S
M
T
W
T
F
S
30
82°
71°
31
N/A
1
93°
69°
2
92°
71°
3
91°
70°
4
91°
69°
5
90°
69°
6
84°
63°
7
84°
65°
8
81°
62°
9
80°
60°
10
77°
56°
11
77°
53°
12
81°
60°
13
80°
59°
14
78°
59°
15
80°
58°
16
80°
58°
17
79°
57°
18
80°
58°
19
80°
58°
20
79°
57°
21
80°
58°
22
80°
58°
23
79°
57°
24
79°
57°
25
78°
56°
26
79°
56°
27
78°
55°
28
78°
55°
29
77°
54°
30
77°
55°
1
76°
54°
2
76°
54°
3
75°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Shellsburg
Shellsburg's September 2026 forecast shows daily high temperatures ranging from 75° to 93°, with overnight lows between 53° and 71°. The average high for September is 81° with an average low of 59°. 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 Shellsburg. See also: October | November | December.
