S
M
T
W
T
F
S
30
89°
63°
31
90°
67°
1
92°
70°
2
92°
71°
3
95°
70°
4
93°
68°
5
81°
62°
6
81°
56°
7
81°
61°
8
84°
66°
9
87°
66°
10
83°
60°
11
82°
58°
12
80°
60°
13
78°
61°
14
74°
56°
15
77°
54°
16
80°
60°
17
80°
59°
18
76°
59°
19
81°
59°
20
78°
58°
21
77°
59°
22
79°
57°
23
75°
53°
24
71°
55°
25
78°
57°
26
76°
54°
27
69°
48°
28
67°
45°
29
66°
46°
30
67°
45°
1
65°
44°
2
67°
53°
3
72°
52°
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 65° to 95°, with overnight lows between 44° and 71°. The average high for September is 78° with an average low of 57°. 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.
