S
M
T
W
T
F
S
30
70°
44°
31
68°
44°
1
68°
48°
2
69°
46°
3
69°
48°
4
70°
46°
5
69°
43°
6
68°
44°
7
69°
43°
8
68°
42°
9
69°
49°
10
68°
43°
11
66°
42°
12
70°
42°
13
71°
49°
14
72°
45°
15
72°
48°
16
71°
48°
17
72°
49°
18
73°
48°
19
73°
45°
20
72°
45°
21
64°
46°
22
65°
42°
23
64°
44°
24
65°
45°
25
63°
40°
26
68°
36°
27
66°
38°
28
57°
37°
29
56°
38°
30
58°
37°
1
58°
42°
2
Hist. Avg.
57°
41°
3
Hist. Avg.
56°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Markdale
Markdale's September 2026 forecast shows daily high temperatures ranging from 56° to 73°, with overnight lows between 36° and 49°. The average high for September is 67° with an average low of 44°. 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 Markdale. See also: October | November | December.