S
M
T
W
T
F
S
30
84°
68°
31
87°
69°
1
88°
73°
2
89°
72°
3
79°
69°
4
88°
68°
5
77°
64°
6
75°
59°
7
78°
59°
8
77°
59°
9
82°
67°
10
78°
59°
11
79°
58°
12
82°
63°
13
67°
48°
14
70°
45°
15
73°
62°
16
70°
58°
17
66°
60°
18
67°
60°
19
66°
61°
20
64°
54°
21
61°
49°
22
59°
46°
23
63°
49°
24
65°
50°
25
67°
47°
26
68°
49°
27
68°
49°
28
68°
51°
29
69°
49°
30
65°
49°
1
67°
50°
2
66°
44°
3
61°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Delafield
Delafield's September 2026 forecast shows daily high temperatures ranging from 59° to 69°, with overnight lows between 44° and 54°. The average high for September is 65° with an average low of 49°. 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 Delafield. See also: October | November | December.
