S
M
T
W
T
F
S
30
60°
42°
31
58°
44°
1
57°
41°
2
58°
43°
3
60°
45°
4
60°
43°
5
57°
42°
6
57°
41°
7
56°
43°
8
56°
43°
9
57°
36°
10
56°
39°
11
56°
43°
12
59°
44°
13
55°
44°
14
60°
43°
15
59°
41°
16
59°
40°
17
58°
39°
18
53°
35°
19
58°
40°
20
57°
40°
21
52°
35°
22
55°
37°
23
52°
37°
24
Hist. Avg.
52°
37°
25
Hist. Avg.
51°
37°
26
Hist. Avg.
51°
37°
27
Hist. Avg.
50°
36°
28
Hist. Avg.
50°
36°
29
Hist. Avg.
50°
36°
30
Hist. Avg.
49°
35°
1
Hist. Avg.
49°
35°
2
Hist. Avg.
48°
35°
3
Hist. Avg.
48°
34°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Willow
Willow's September 2026 forecast shows daily high temperatures ranging from 52° to 60°, with overnight lows between 35° and 45°. The average high for September is 57° with an average low of 41°. 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. See also: October | November | December.
