S
M
T
W
T
F
S
30
75°
58°
31
80°
60°
1
82°
54°
2
80°
53°
3
74°
52°
4
75°
54°
5
75°
60°
6
79°
59°
7
81°
56°
8
74°
58°
9
73°
59°
10
76°
58°
11
76°
56°
12
77°
57°
13
74°
56°
14
71°
50°
15
71°
50°
16
72°
49°
17
70°
50°
18
70°
55°
19
73°
55°
20
74°
56°
21
76°
52°
22
71°
47°
23
69°
53°
24
68°
55°
25
74°
48°
26
65°
51°
27
72°
52°
28
73°
52°
29
Hist. Avg.
68°
44°
30
Hist. Avg.
68°
44°
1
Hist. Avg.
68°
43°
2
Hist. Avg.
67°
43°
3
Hist. Avg.
67°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Monroe
Monroe's September 2026 forecast shows daily high temperatures ranging from 65° to 82°, with overnight lows between 47° and 60°. The average high for September is 74° with an average low of 54°. 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.
