S
M
T
W
T
F
S
30
74°
56°
31
66°
49°
1
73°
54°
2
74°
50°
3
69°
54°
4
77°
53°
5
83°
58°
6
N/A
7
72°
53°
8
63°
49°
9
70°
48°
10
77°
49°
11
65°
45°
12
57°
38°
13
59°
41°
14
63°
42°
15
68°
46°
16
66°
42°
17
61°
39°
18
61°
40°
19
57°
42°
20
64°
38°
21
67°
46°
22
68°
45°
23
59°
44°
24
59°
43°
25
68°
44°
26
68°
44°
27
67°
43°
28
67°
42°
29
60°
41°
30
56°
38°
1
55°
39°
2
52°
36°
3
52°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Birtle
Birtle's September 2026 forecast shows daily high temperatures ranging from 52° to 77°, with overnight lows between 36° and 53°. The average high for September is 63° with an average low of 43°. 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 Birtle. See also: October | November | December.