S
M
T
W
T
F
S
30
86°
62°
31
89°
62°
1
91°
63°
2
89°
64°
3
90°
65°
4
89°
61°
5
89°
63°
6
88°
65°
7
89°
59°
8
85°
63°
9
89°
63°
10
88°
62°
11
86°
63°
12
88°
63°
13
88°
58°
14
82°
56°
15
82°
56°
16
83°
57°
17
82°
61°
18
86°
60°
19
86°
60°
20
84°
61°
21
80°
60°
22
84°
59°
23
84°
60°
24
84°
53°
25
79°
52°
26
81°
57°
27
83°
57°
28
84°
58°
29
Hist. Avg.
81°
55°
30
Hist. Avg.
80°
55°
1
Hist. Avg.
80°
54°
2
Hist. Avg.
80°
54°
3
Hist. Avg.
79°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Keys Mill
Keys Mill's September 2026 forecast shows daily high temperatures ranging from 79° to 91°, with overnight lows between 52° and 65°. The average high for September is 86° 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 Keys Mill. See also: October | November | December.