S
M
T
W
T
F
S
30
75°
54°
31
77°
59°
1
75°
61°
2
81°
53°
3
75°
50°
4
72°
51°
5
71°
50°
6
72°
54°
7
79°
56°
8
80°
59°
9
81°
57°
10
78°
51°
11
73°
57°
12
74°
53°
13
76°
49°
14
71°
49°
15
69°
47°
16
70°
48°
17
73°
55°
18
76°
45°
19
70°
50°
20
71°
46°
21
72°
50°
22
69°
53°
23
76°
55°
24
77°
54°
25
75°
54°
26
75°
53°
27
74°
54°
28
77°
51°
29
74°
52°
30
73°
53°
1
75°
49°
2
75°
43°
3
73°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Poplar Grove
Poplar Grove's September 2026 forecast shows daily high temperatures ranging from 69° to 81°, with overnight lows between 40° and 61°. The average high for September is 74° with an average low of 52°. 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 Grove. See also: October | November | December.
