S
M
T
W
T
F
S
30
84°
66°
31
88°
70°
1
91°
69°
2
93°
71°
3
87°
71°
4
87°
70°
5
86°
66°
6
83°
61°
7
79°
60°
8
80°
61°
9
82°
60°
10
76°
56°
11
74°
51°
12
75°
52°
13
74°
54°
14
77°
58°
15
80°
57°
16
80°
58°
17
79°
57°
18
79°
57°
19
80°
58°
20
81°
58°
21
81°
57°
22
80°
57°
23
80°
56°
24
79°
57°
25
80°
57°
26
80°
56°
27
79°
55°
28
78°
55°
29
77°
54°
30
77°
54°
1
76°
53°
2
76°
53°
3
75°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Sugar Grove
Sugar Grove's September 2026 forecast shows daily high temperatures ranging from 74° to 93°, with overnight lows between 51° and 71°. The average high for September is 80° with an average low of 58°. 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 Sugar Grove. See also: October | November | December.