S
M
T
W
T
F
S
30
82°
61°
31
83°
65°
1
86°
60°
2
87°
59°
3
80°
60°
4
81°
61°
5
82°
65°
6
86°
65°
7
87°
64°
8
84°
65°
9
82°
65°
10
85°
64°
11
85°
63°
12
84°
64°
13
83°
60°
14
84°
58°
15
79°
58°
16
77°
57°
17
78°
56°
18
78°
57°
19
80°
60°
20
81°
62°
21
82°
60°
22
79°
55°
23
77°
60°
24
78°
61°
25
81°
54°
26
81°
53°
27
Hist. Avg.
77°
54°
28
Hist. Avg.
77°
54°
29
Hist. Avg.
76°
53°
30
Hist. Avg.
76°
53°
1
Hist. Avg.
76°
52°
2
Hist. Avg.
75°
52°
3
Hist. Avg.
75°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Kilmarnock
Kilmarnock's September 2026 forecast shows daily high temperatures ranging from 77° to 87°, with overnight lows between 53° and 65°. The average high for September is 82° 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 Kilmarnock. See also: October | November | December.
