S
M
T
W
T
F
S
30
81°
62°
31
83°
51°
1
81°
59°
2
82°
63°
3
83°
51°
4
87°
65°
5
88°
59°
6
85°
61°
7
76°
55°
8
82°
48°
9
84°
48°
10
86°
46°
11
87°
63°
12
89°
51°
13
90°
66°
14
71°
55°
15
76°
47°
16
84°
56°
17
83°
62°
18
73°
55°
19
70°
49°
20
72°
43°
21
79°
44°
22
75°
55°
23
77°
47°
24
81°
45°
25
83°
47°
26
80°
54°
27
83°
51°
28
71°
49°
29
77°
45°
30
77°
46°
1
78°
44°
2
80°
49°
3
83°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Collinston
Collinston's September 2026 forecast shows daily high temperatures ranging from 71° to 83°, with overnight lows between 44° and 53°. The average high for September is 78° with an average low of 48°. 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 Collinston. See also: October | November | December.
