S
M
T
W
T
F
S
30
72°
44°
31
74°
50°
1
77°
52°
2
82°
51°
3
84°
51°
4
79°
44°
5
72°
44°
6
74°
48°
7
73°
44°
8
71°
43°
9
72°
48°
10
70°
49°
11
71°
48°
12
70°
44°
13
70°
47°
14
72°
49°
15
78°
49°
16
79°
42°
17
75°
42°
18
73°
41°
19
78°
43°
20
77°
50°
21
76°
45°
22
69°
42°
23
68°
43°
24
68°
40°
25
67°
40°
26
70°
39°
27
68°
48°
28
67°
47°
29
66°
43°
30
67°
45°
1
72°
47°
2
71°
46°
3
Hist. Avg.
70°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Battle Ground
Battle Ground's September 2026 forecast shows daily high temperatures ranging from 66° to 84°, with overnight lows between 39° and 52°. The average high for September is 73° with an average low of 46°. 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 Battle Ground. See also: October | November | December.