S
M
T
W
T
F
S
30
68°
37°
31
62°
37°
1
61°
39°
2
63°
38°
3
59°
38°
4
60°
37°
5
59°
37°
6
64°
40°
7
69°
46°
8
65°
45°
9
60°
45°
10
59°
44°
11
58°
45°
12
60°
45°
13
65°
41°
14
66°
44°
15
63°
36°
16
64°
36°
17
58°
43°
18
66°
43°
19
54°
35°
20
54°
34°
21
Hist. Avg.
58°
38°
22
Hist. Avg.
58°
38°
23
Hist. Avg.
58°
38°
24
Hist. Avg.
57°
38°
25
Hist. Avg.
57°
37°
26
Hist. Avg.
57°
37°
27
Hist. Avg.
56°
37°
28
Hist. Avg.
56°
37°
29
Hist. Avg.
56°
36°
30
Hist. Avg.
55°
36°
1
Hist. Avg.
55°
36°
2
Hist. Avg.
54°
36°
3
Hist. Avg.
54°
35°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Monteith
Monteith's September 2026 forecast shows daily high temperatures ranging from 54° to 69°, with overnight lows between 34° and 46°. The average high for September is 62° with an average low of 40°. 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 Monteith. See also: October | November | December.