S
M
T
W
T
F
S
30
79°
70°
31
N/A
1
89°
66°
2
87°
67°
3
84°
69°
4
84°
67°
5
82°
62°
6
82°
58°
7
76°
60°
8
75°
58°
9
77°
53°
10
73°
49°
11
69°
49°
12
68°
50°
13
68°
51°
14
72°
48°
15
76°
53°
16
76°
50°
17
74°
53°
18
76°
54°
19
74°
52°
20
74°
52°
21
76°
54°
22
76°
54°
23
75°
53°
24
76°
53°
25
75°
52°
26
74°
51°
27
75°
52°
28
75°
51°
29
74°
50°
30
74°
51°
1
73°
51°
2
74°
50°
3
73°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Spring Grove
Spring Grove's September 2026 forecast shows daily high temperatures ranging from 68° to 89°, with overnight lows between 48° and 69°. The average high for September is 76° 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 Spring Grove. See also: October | November | December.
