S
M
T
W
T
F
S
30
90°
67°
31
85°
61°
1
78°
59°
2
82°
65°
3
92°
67°
4
95°
69°
5
93°
68°
6
88°
63°
7
76°
61°
8
79°
58°
9
76°
57°
10
77°
54°
11
73°
51°
12
75°
54°
13
74°
53°
14
72°
50°
15
77°
56°
16
75°
56°
17
77°
58°
18
75°
56°
19
74°
55°
20
75°
56°
21
76°
55°
22
75°
55°
23
75°
56°
24
77°
57°
25
76°
56°
26
75°
55°
27
76°
54°
28
75°
54°
29
74°
55°
30
75°
55°
1
75°
54°
2
74°
52°
3
72°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Willow Lake
Willow Lake's September 2026 forecast shows daily high temperatures ranging from 72° to 95°, with overnight lows between 50° and 69°. The average high for September is 78° with an average low of 57°. 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 Willow Lake. See also: October | November | December.
