S
M
T
W
T
F
S
30
89°
63°
31
90°
67°
1
92°
70°
2
95°
72°
3
95°
70°
4
91°
68°
5
84°
62°
6
81°
59°
7
80°
61°
8
82°
62°
9
87°
66°
10
86°
62°
11
78°
57°
12
76°
55°
13
78°
56°
14
77°
55°
15
81°
59°
16
80°
60°
17
80°
59°
18
77°
57°
19
80°
58°
20
81°
59°
21
81°
59°
22
80°
58°
23
81°
58°
24
81°
57°
25
80°
57°
26
80°
56°
27
79°
57°
28
79°
56°
29
78°
55°
30
77°
54°
1
77°
54°
2
76°
53°
3
77°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Washington Court House
Washington Court House's September 2026 forecast shows daily high temperatures ranging from 76° to 95°, with overnight lows between 53° and 72°. The average high for September is 81° with an average low of 59°. 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 Washington Court House. See also: October | November | December.
