S
M
T
W
T
F
S
30
88°
68°
31
89°
67°
1
90°
69°
2
88°
68°
3
87°
68°
4
88°
66°
5
89°
67°
6
90°
70°
7
88°
69°
8
88°
69°
9
87°
68°
10
88°
68°
11
86°
67°
12
87°
68°
13
86°
68°
14
84°
67°
15
83°
67°
16
83°
66°
17
87°
68°
18
88°
68°
19
88°
67°
20
87°
66°
21
84°
66°
22
85°
65°
23
85°
60°
24
81°
61°
25
80°
63°
26
81°
64°
27
82°
61°
28
80°
59°
29
79°
61°
30
79°
64°
1
80°
62°
2
81°
56°
3
78°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Santee State Park
Santee State Park's September 2026 forecast shows daily high temperatures ranging from 78° to 90°, with overnight lows between 55° and 70°. The average high for September is 85° with an average low of 65°. 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 Santee State Park. See also: October | November | December.
