S
M
T
W
T
F
S
30
88°
48°
31
92°
51°
1
75°
54°
2
60°
52°
3
66°
51°
4
68°
48°
5
75°
48°
6
68°
53°
7
80°
46°
8
90°
50°
9
96°
53°
10
94°
56°
11
87°
53°
12
73°
47°
13
71°
51°
14
80°
42°
15
82°
47°
16
82°
45°
17
83°
51°
18
92°
49°
19
96°
54°
20
95°
53°
21
91°
52°
22
84°
48°
23
86°
48°
24
88°
50°
25
79°
46°
26
81°
51°
27
81°
50°
28
80°
49°
29
80°
47°
30
79°
43°
1
73°
43°
2
75°
42°
3
72°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Grants Pass
Grants Pass's September 2026 forecast shows daily high temperatures ranging from 72° to 96°, with overnight lows between 42° and 54°. The average high for September is 83° with an average low of 48°. 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 Grants Pass. See also: October | November | December.
