S
M
T
W
T
F
S
31
100°
64°
1
94°
65°
2
103°
59°
3
101°
71°
4
101°
67°
5
95°
62°
6
90°
59°
7
86°
67°
8
89°
65°
9
84°
64°
10
90°
52°
11
88°
63°
12
87°
62°
13
87°
61°
14
74°
62°
15
81°
59°
16
83°
51°
17
90°
52°
18
89°
61°
19
90°
58°
20
89°
55°
21
76°
53°
22
73°
47°
23
80°
45°
24
81°
45°
25
80°
53°
26
77°
51°
27
69°
48°
28
78°
43°
29
74°
53°
30
72°
49°
1
69°
46°
2
68°
44°
3
73°
45°
4
71°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Monitor
Monitor's September 2025 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. 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 Monitor. See also: October | November | December.
