S
M
T
W
T
F
S
30
84°
66°
31
89°
69°
1
91°
70°
2
89°
68°
3
87°
67°
4
87°
67°
5
79°
58°
6
74°
56°
7
77°
63°
8
77°
62°
9
78°
63°
10
79°
62°
11
74°
56°
12
75°
57°
13
74°
57°
14
77°
58°
15
80°
60°
16
80°
61°
17
79°
61°
18
81°
62°
19
81°
62°
20
80°
61°
21
80°
60°
22
79°
61°
23
79°
60°
24
80°
58°
25
75°
56°
26
73°
55°
27
73°
54°
28
75°
55°
29
76°
56°
30
76°
56°
1
75°
55°
2
76°
56°
3
77°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Sinking Spring
Sinking Spring's September 2026 forecast shows daily high temperatures ranging from 73° to 91°, with overnight lows between 54° and 70°. The average high for September is 79° with an average low of 60°. 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 Sinking Spring. See also: October | November | December.
