S
M
T
W
T
F
S
30
83°
54°
31
84°
57°
1
90°
63°
2
93°
65°
3
94°
57°
4
89°
52°
5
80°
53°
6
81°
56°
7
83°
55°
8
86°
56°
9
84°
57°
10
84°
50°
11
81°
52°
12
81°
52°
13
82°
53°
14
81°
48°
15
76°
46°
16
76°
45°
17
75°
46°
18
76°
47°
19
77°
53°
20
85°
50°
21
85°
49°
22
81°
48°
23
75°
46°
24
72°
45°
25
70°
45°
26
71°
44°
27
70°
44°
28
71°
48°
29
76°
49°
30
71°
41°
1
82°
56°
2
81°
51°
3
Hist. Avg.
71°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Clarkston
Clarkston's September 2026 forecast shows daily high temperatures ranging from 70° to 94°, with overnight lows between 41° and 65°. The average high for September is 80° with an average low of 51°. 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 Clarkston. See also: October | November | December.
