S
M
T
W
T
F
S
30
69°
53°
31
70°
60°
1
73°
61°
2
69°
63°
3
74°
63°
4
78°
57°
5
79°
57°
6
70°
53°
7
66°
51°
8
70°
58°
9
73°
57°
10
75°
58°
11
72°
54°
12
70°
59°
13
71°
58°
14
75°
55°
15
69°
55°
16
65°
56°
17
63°
56°
18
66°
51°
19
71°
51°
20
64°
54°
21
68°
45°
22
63°
48°
23
63°
46°
24
66°
51°
25
70°
49°
26
67°
50°
27
64°
54°
28
64°
49°
29
68°
43°
30
60°
52°
1
64°
45°
2
68°
44°
3
58°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Courtice
Courtice's September 2026 forecast shows daily high temperatures ranging from 58° to 79°, with overnight lows between 43° and 63°. The average high for September is 68° with an average low of 53°. 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 Courtice. See also: October | November | December.