S
M
T
W
T
F
S
30
73°
52°
31
82°
45°
1
68°
53°
2
65°
51°
3
63°
50°
4
72°
49°
5
73°
45°
6
77°
45°
7
74°
52°
8
78°
44°
9
83°
43°
10
72°
53°
11
69°
51°
12
66°
50°
13
64°
52°
14
68°
52°
15
68°
47°
16
80°
40°
17
82°
41°
18
69°
51°
19
71°
47°
20
73°
44°
21
73°
50°
22
71°
53°
23
69°
43°
24
N/A
25
61°
45°
26
N/A
27
69°
40°
28
66°
53°
29
63°
46°
30
63°
44°
1
65°
48°
2
66°
47°
3
63°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Potlatch
Potlatch's September 2026 forecast shows daily high temperatures ranging from 63° to 69°, with overnight lows between 40° and 53°. The average high for September is 65° with an average low of 47°. 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 Potlatch. See also: October | November | December.