S
M
T
W
T
F
S
30
74°
52°
31
86°
57°
1
72°
60°
2
64°
53°
3
63°
51°
4
69°
50°
5
71°
51°
6
75°
54°
7
73°
50°
8
74°
49°
9
76°
48°
10
82°
50°
11
76°
49°
12
73°
50°
13
76°
48°
14
77°
50°
15
75°
46°
16
68°
46°
17
68°
45°
18
68°
43°
19
68°
41°
20
70°
47°
21
68°
42°
22
69°
45°
23
67°
40°
24
66°
40°
25
66°
39°
26
71°
40°
27
75°
44°
28
75°
44°
29
74°
45°
30
73°
46°
1
74°
47°
2
75°
47°
3
74°
46°
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 63° to 82°, with overnight lows between 39° and 54°. The average high for September is 72° 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.