S
M
T
W
T
F
S
30
83°
60°
31
84°
63°
1
87°
64°
2
87°
64°
3
86°
63°
4
86°
64°
5
85°
63°
6
82°
63°
7
81°
61°
8
82°
63°
9
84°
58°
10
85°
57°
11
80°
62°
12
84°
61°
13
84°
62°
14
83°
60°
15
85°
61°
16
84°
62°
17
Hist. Avg.
81°
60°
18
Hist. Avg.
81°
59°
19
Hist. Avg.
80°
59°
20
Hist. Avg.
80°
59°
21
Hist. Avg.
80°
58°
22
Hist. Avg.
79°
58°
23
Hist. Avg.
79°
57°
24
Hist. Avg.
79°
57°
25
Hist. Avg.
78°
56°
26
Hist. Avg.
78°
56°
27
Hist. Avg.
78°
56°
28
Hist. Avg.
77°
55°
29
Hist. Avg.
77°
55°
30
Hist. Avg.
76°
54°
1
Hist. Avg.
76°
54°
2
Hist. Avg.
76°
53°
3
Hist. Avg.
75°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Spring Grove
Spring Grove's September 2026 forecast shows daily high temperatures ranging from 80° to 87°, with overnight lows between 57° and 64°. The average high for September is 84° with an average low of 62°. 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.