S
M
T
W
T
F
S
30
90°
65°
31
94°
64°
1
96°
68°
2
97°
69°
3
96°
70°
4
96°
70°
5
95°
69°
6
85°
58°
7
85°
60°
8
91°
71°
9
90°
66°
10
83°
57°
11
81°
62°
12
86°
65°
13
86°
64°
14
82°
62°
15
78°
57°
16
81°
61°
17
80°
56°
18
79°
57°
19
78°
53°
20
80°
58°
21
81°
58°
22
74°
57°
23
76°
57°
24
80°
56°
25
81°
58°
26
81°
58°
27
80°
57°
28
81°
58°
29
81°
59°
30
80°
57°
1
77°
52°
2
67°
46°
3
66°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Mount Pulaski
Mount Pulaski's September 2026 forecast shows daily high temperatures ranging from 66° to 91°, with overnight lows between 44° and 71°. The average high for September is 80° with an average low of 58°. 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 Mount Pulaski. See also: October | November | December.