S
M
T
W
T
F
S
30
100°
79°
31
82°
66°
1
93°
70°
2
94°
73°
3
95°
76°
4
97°
76°
5
98°
74°
6
99°
75°
7
98°
79°
8
100°
76°
9
100°
80°
10
102°
76°
11
100°
79°
12
92°
75°
13
100°
71°
14
97°
74°
15
92°
72°
16
88°
69°
17
90°
70°
18
99°
68°
19
96°
67°
20
96°
66°
21
72°
51°
22
72°
49°
23
69°
50°
24
67°
48°
25
66°
47°
26
67°
48°
27
69°
51°
28
69°
51°
29
67°
47°
30
67°
47°
1
69°
48°
2
66°
38°
3
67°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Picacho Peak State Park
Picacho Peak State Park's September 2026 forecast shows daily high temperatures ranging from 66° to 72°, with overnight lows between 38° and 51°. The average high for September is 68° 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 Picacho Peak State Park. See also: October | November | December.