S
M
T
W
T
F
S
30
61°
45°
31
64°
39°
1
72°
38°
2
73°
47°
3
67°
44°
4
64°
40°
5
65°
50°
6
68°
51°
7
64°
45°
8
62°
35°
9
64°
46°
10
62°
43°
11
69°
42°
12
69°
36°
13
78°
39°
14
79°
52°
15
73°
45°
16
60°
40°
17
59°
46°
18
72°
34°
19
77°
54°
20
81°
45°
21
83°
47°
22
62°
35°
23
67°
38°
24
N/A
25
69°
52°
26
57°
41°
27
59°
35°
28
68°
43°
29
74°
51°
30
73°
53°
1
76°
50°
2
68°
41°
3
65°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Churchill
Churchill's September 2026 forecast shows daily high temperatures ranging from 57° to 76°, with overnight lows between 35° and 53°. The average high for September is 68° with an average low of 45°. 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 Churchill. See also: October | November | December.