S
M
T
W
T
F
S
30
68°
56°
31
71°
54°
1
70°
54°
2
70°
55°
3
69°
50°
4
70°
50°
5
71°
48°
6
75°
50°
7
73°
50°
8
69°
49°
9
74°
51°
10
71°
51°
11
66°
50°
12
67°
50°
13
69°
49°
14
71°
49°
15
70°
52°
16
69°
49°
17
63°
50°
18
63°
46°
19
63°
45°
20
64°
51°
21
63°
50°
22
62°
48°
23
62°
44°
24
61°
42°
25
61°
41°
26
63°
44°
27
69°
48°
28
69°
48°
29
68°
49°
30
67°
48°
1
68°
49°
2
69°
49°
3
68°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Monroe
Monroe's September 2026 forecast shows daily high temperatures ranging from 61° to 75°, with overnight lows between 41° and 52°. The average high for September is 67° with an average low of 48°. 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 Monroe. See also: October | November | December.
