S
M
T
W
T
F
S
30
89°
54°
31
92°
54°
1
92°
53°
2
93°
53°
3
93°
52°
4
92°
53°
5
92°
53°
6
88°
52°
7
91°
53°
8
90°
47°
9
86°
52°
10
85°
51°
11
88°
49°
12
84°
51°
13
84°
49°
14
83°
46°
15
81°
46°
16
81°
49°
17
Hist. Avg.
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18
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19
Hist. Avg.
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20
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21
Hist. Avg.
N/A
22
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N/A
23
Hist. Avg.
N/A
24
Hist. Avg.
N/A
25
Hist. Avg.
N/A
26
Hist. Avg.
N/A
27
Hist. Avg.
N/A
28
Hist. Avg.
N/A
29
Hist. Avg.
N/A
30
Hist. Avg.
N/A
1
Hist. Avg.
N/A
2
Hist. Avg.
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3
Hist. Avg.
N/A
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 81° to 93°, with overnight lows between 46° and 54°. The average high for September is 88° with an average low of 51°. 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.
