S
M
T
W
T
F
S
30
77°
54°
31
76°
53°
1
76°
54°
2
77°
53°
3
76°
53°
4
77°
54°
5
77°
58°
6
78°
59°
7
76°
55°
8
77°
53°
9
75°
52°
10
79°
50°
11
75°
49°
12
75°
50°
13
76°
50°
14
75°
55°
15
81°
56°
16
81°
57°
17
80°
56°
18
80°
48°
19
79°
47°
20
73°
48°
21
72°
53°
22
72°
54°
23
78°
54°
24
77°
55°
25
78°
46°
26
77°
43°
27
70°
44°
28
67°
45°
29
68°
45°
30
69°
50°
1
68°
52°
2
Hist. Avg.
71°
46°
3
Hist. Avg.
71°
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 67° to 81°, with overnight lows between 43° and 59°. The average high for September is 76° with an average low of 52°. 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.