S
M
T
W
T
F
S
31
80°
69°
1
75°
54°
2
58°
49°
3
51°
45°
4
55°
46°
5
56°
48°
6
54°
50°
7
62°
52°
8
65°
57°
9
64°
54°
10
68°
56°
11
66°
62°
12
69°
60°
13
71°
60°
14
71°
59°
15
73°
64°
16
65°
58°
17
60°
53°
18
62°
50°
19
68°
55°
20
64°
58°
21
64°
57°
22
68°
59°
23
67°
59°
24
68°
59°
25
63°
56°
26
64°
56°
27
64°
55°
28
69°
55°
29
66°
54°
30
70°
55°
1
68°
63°
2
66°
55°
3
59°
51°
4
60°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Poplar River
Poplar River'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 Poplar River. See also: October | November | December.