S
M
T
W
T
F
S
30
80°
63°
31
82°
63°
1
82°
55°
2
78°
55°
3
81°
60°
4
76°
60°
5
75°
59°
6
74°
58°
7
76°
55°
8
77°
51°
9
73°
51°
10
72°
60°
11
77°
57°
12
78°
59°
13
77°
58°
14
78°
57°
15
77°
59°
16
69°
49°
17
69°
49°
18
69°
48°
19
Hist. Avg.
74°
55°
20
Hist. Avg.
74°
55°
21
Hist. Avg.
74°
54°
22
Hist. Avg.
73°
54°
23
Hist. Avg.
73°
53°
24
Hist. Avg.
72°
53°
25
Hist. Avg.
72°
53°
26
Hist. Avg.
72°
52°
27
Hist. Avg.
71°
52°
28
Hist. Avg.
71°
51°
29
Hist. Avg.
70°
51°
30
Hist. Avg.
70°
50°
1
Hist. Avg.
69°
50°
2
Hist. Avg.
69°
50°
3
Hist. Avg.
68°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Kildeer
Kildeer's September 2026 forecast shows daily high temperatures ranging from 69° to 82°, with overnight lows between 48° and 63°. The average high for September is 76° with an average low of 56°. 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 Kildeer. See also: October | November | December.