S
M
T
W
T
F
S
30
81°
61°
31
85°
62°
1
86°
63°
2
86°
63°
3
85°
62°
4
84°
56°
5
80°
61°
6
85°
62°
7
84°
62°
8
84°
60°
9
80°
61°
10
81°
62°
11
84°
61°
12
85°
61°
13
83°
60°
14
84°
61°
15
84°
61°
16
83°
60°
17
83°
54°
18
80°
52°
19
76°
51°
20
76°
50°
21
74°
50°
22
74°
51°
23
76°
53°
24
79°
51°
25
78°
56°
26
79°
56°
27
80°
54°
28
78°
54°
29
77°
53°
30
78°
53°
1
75°
51°
2
77°
54°
3
72°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Yosemite
Yosemite's September 2026 forecast shows daily high temperatures ranging from 72° to 86°, with overnight lows between 49° and 63°. The average high for September is 80° with an average low of 57°. 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 Yosemite. See also: October | November | December.
