S
M
T
W
T
F
S
30
80°
47°
31
80°
46°
1
79°
47°
2
78°
49°
3
79°
46°
4
79°
45°
5
76°
41°
6
74°
37°
7
68°
40°
8
68°
41°
9
72°
45°
10
75°
44°
11
77°
41°
12
74°
44°
13
74°
44°
14
75°
41°
15
71°
37°
16
66°
41°
17
72°
44°
18
75°
43°
19
76°
44°
20
75°
44°
21
74°
43°
22
65°
39°
23
62°
39°
24
68°
35°
25
68°
34°
26
67°
37°
27
63°
36°
28
61°
35°
29
61°
30°
30
60°
35°
1
60°
40°
2
62°
40°
3
68°
37°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Olympic Valley
Olympic Valley's September 2026 forecast shows daily high temperatures ranging from 60° to 80°, with overnight lows between 30° and 49°. The average high for September is 71° with an average low of 41°. 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 Olympic Valley. See also: October | November | December.
