S
M
T
W
T
F
S
30
104°
74°
31
106°
75°
1
108°
78°
2
110°
78°
3
110°
80°
4
109°
78°
5
110°
79°
6
109°
78°
7
106°
75°
8
102°
75°
9
102°
72°
10
101°
73°
11
99°
72°
12
100°
77°
13
101°
77°
14
100°
75°
15
99°
72°
16
105°
71°
17
103°
69°
18
Hist. Avg.
102°
76°
19
Hist. Avg.
102°
76°
20
Hist. Avg.
101°
76°
21
Hist. Avg.
101°
75°
22
Hist. Avg.
100°
75°
23
Hist. Avg.
100°
74°
24
Hist. Avg.
99°
74°
25
Hist. Avg.
99°
74°
26
Hist. Avg.
98°
73°
27
Hist. Avg.
98°
73°
28
Hist. Avg.
98°
72°
29
Hist. Avg.
97°
72°
30
Hist. Avg.
97°
71°
1
Hist. Avg.
96°
71°
2
Hist. Avg.
96°
70°
3
Hist. Avg.
95°
70°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Willow Valley
Willow Valley's September 2026 forecast shows daily high temperatures ranging from 99° to 110°, with overnight lows between 69° and 80°. The average high for September is 104° with an average low of 75°. 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 Valley. See also: October | November | December.
