S
M
T
W
T
F
S
30
84°
66°
31
89°
69°
1
81°
63°
2
77°
62°
3
76°
61°
4
80°
60°
5
79°
58°
6
74°
56°
7
77°
63°
8
77°
62°
9
78°
63°
10
79°
62°
11
74°
57°
12
77°
61°
13
78°
60°
14
74°
55°
15
74°
56°
16
76°
60°
17
73°
59°
18
80°
57°
19
75°
53°
20
70°
51°
21
74°
59°
22
78°
58°
23
78°
57°
24
75°
53°
25
69°
55°
26
69°
51°
27
68°
49°
28
69°
50°
29
69°
51°
30
68°
51°
1
68°
52°
2
66°
48°
3
64°
47°
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 64° to 89°, with overnight lows between 47° and 69°. The average high for September is 75° with an average low of 57°. 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.
