S
M
T
W
T
F
S
30
85°
54°
31
87°
55°
1
88°
54°
2
87°
50°
3
85°
48°
4
83°
54°
5
88°
52°
6
89°
53°
7
84°
54°
8
88°
57°
9
89°
54°
10
88°
52°
11
85°
50°
12
79°
44°
13
76°
44°
14
78°
46°
15
81°
50°
16
77°
46°
17
76°
50°
18
80°
47°
19
74°
45°
20
75°
44°
21
74°
46°
22
72°
45°
23
70°
44°
24
71°
44°
25
73°
45°
26
77°
46°
27
78°
41°
28
71°
45°
29
79°
37°
30
78°
34°
1
67°
35°
2
68°
34°
3
68°
34°
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 67° to 89°, with overnight lows between 34° and 57°. The average high for September is 79° with an average low of 47°. 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.
