S
M
T
W
T
F
S
30
73°
50°
31
76°
54°
1
74°
47°
2
75°
46°
3
69°
46°
4
68°
45°
5
68°
45°
6
69°
51°
7
75°
55°
8
78°
53°
9
74°
46°
10
70°
45°
11
70°
53°
12
71°
45°
13
72°
44°
14
68°
42°
15
67°
44°
16
68°
50°
17
71°
43°
18
70°
42°
19
67°
45°
20
70°
41°
21
66°
49°
22
65°
51°
23
74°
51°
24
74°
50°
25
73°
51°
26
72°
50°
27
74°
49°
28
73°
48°
29
71°
49°
30
71°
50°
1
73°
40°
2
73°
37°
3
66°
37°
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 65° to 78°, with overnight lows between 37° and 55°. The average high for September is 71° with an average low of 47°. 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.
