S
M
T
W
T
F
S
30
87°
65°
31
86°
68°
1
94°
72°
2
89°
70°
3
91°
70°
4
87°
69°
5
82°
62°
6
83°
59°
7
82°
56°
8
87°
55°
9
90°
63°
10
86°
72°
11
80°
64°
12
80°
63°
13
88°
71°
14
78°
58°
15
79°
49°
16
86°
58°
17
86°
66°
18
84°
64°
19
79°
68°
20
84°
63°
21
71°
61°
22
66°
55°
23
61°
55°
24
61°
54°
25
66°
54°
26
69°
55°
27
70°
54°
28
67°
53°
29
68°
54°
30
70°
55°
1
71°
52°
2
69°
53°
3
68°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Washington Grove
Washington Grove's September 2026 forecast shows daily high temperatures ranging from 61° to 84°, with overnight lows between 52° and 68°. The average high for September is 69° with an average low of 56°. 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 Grove. See also: October | November | December.
