S
M
T
W
T
F
S
30
81°
44°
31
78°
48°
1
82°
50°
2
83°
52°
3
85°
51°
4
84°
45°
5
72°
41°
6
72°
44°
7
75°
44°
8
73°
45°
9
78°
47°
10
78°
41°
11
72°
43°
12
75°
42°
13
73°
47°
14
78°
40°
15
71°
38°
16
69°
36°
17
67°
36°
18
67°
38°
19
68°
40°
20
70°
41°
21
75°
41°
22
73°
38°
23
67°
37°
24
66°
38°
25
65°
37°
26
66°
38°
27
65°
35°
28
64°
36°
29
64°
36°
30
71°
37°
1
74°
46°
2
73°
45°
3
Hist. Avg.
65°
34°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Willow Creek
Willow Creek's September 2026 forecast shows daily high temperatures ranging from 64° to 85°, with overnight lows between 35° and 52°. The average high for September is 73° with an average low of 42°. 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 Creek. See also: October | November | December.
