S
M
T
W
T
F
S
30
77°
64°
31
87°
71°
1
86°
74°
2
94°
74°
3
90°
69°
4
82°
66°
5
79°
58°
6
79°
58°
7
78°
60°
8
75°
57°
9
76°
56°
10
77°
58°
11
74°
54°
12
74°
54°
13
72°
56°
14
74°
53°
15
78°
58°
16
77°
58°
17
77°
57°
18
73°
56°
19
77°
58°
20
78°
59°
21
78°
58°
22
77°
58°
23
78°
57°
24
78°
57°
25
77°
56°
26
75°
55°
27
76°
56°
28
76°
55°
29
75°
54°
30
73°
53°
1
73°
53°
2
72°
52°
3
74°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in New Washington
New Washington's September 2026 forecast shows daily high temperatures ranging from 72° to 94°, with overnight lows between 52° and 74°. The average high for September is 77° with an average low of 58°. 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 New Washington. See also: October | November | December.
