S
M
T
W
T
F
S
30
94°
46°
31
91°
47°
1
95°
45°
2
93°
46°
3
94°
46°
4
88°
45°
5
91°
46°
6
91°
50°
7
94°
50°
8
93°
49°
9
93°
50°
10
90°
51°
11
94°
51°
12
95°
50°
13
94°
50°
14
94°
51°
15
93°
50°
16
93°
49°
17
92°
48°
18
92°
47°
19
91°
48°
20
92°
49°
21
93°
49°
22
92°
48°
23
91°
48°
24
91°
47°
25
88°
47°
26
86°
46°
27
89°
47°
28
89°
47°
29
88°
46°
30
91°
49°
1
90°
48°
2
82°
46°
3
80°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Pinnacles National Monument
Pinnacles National Monument's September 2026 forecast shows daily high temperatures ranging from 80° to 95°, with overnight lows between 42° and 51°. The average high for September is 91° 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 Pinnacles National Monument. See also: October | November | December.
