S
M
T
W
T
F
S
30
85°
60°
31
86°
58°
1
88°
58°
2
90°
59°
3
93°
60°
4
93°
61°
5
93°
62°
6
87°
62°
7
88°
62°
8
89°
60°
9
85°
56°
10
81°
56°
11
82°
54°
12
84°
55°
13
85°
54°
14
81°
48°
15
85°
53°
16
85°
53°
17
86°
52°
18
85°
53°
19
84°
52°
20
84°
51°
21
83°
51°
22
84°
50°
23
83°
51°
24
83°
51°
25
82°
50°
26
82°
50°
27
81°
49°
28
80°
49°
29
79°
48°
30
79°
48°
1
78°
47°
2
77°
46°
3
78°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Keenesburg
Keenesburg's September 2026 forecast shows daily high temperatures ranging from 77° to 93°, with overnight lows between 46° and 62°. The average high for September is 84° with an average low of 53°. 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 Keenesburg. See also: October | November | December.
