S
M
T
W
T
F
S
30
74°
48°
31
79°
43°
1
79°
45°
2
78°
46°
3
79°
47°
4
79°
43°
5
73°
47°
6
78°
47°
7
78°
46°
8
77°
46°
9
76°
44°
10
72°
45°
11
70°
45°
12
74°
44°
13
74°
44°
14
77°
45°
15
76°
46°
16
77°
44°
17
Hist. Avg.
78°
45°
18
Hist. Avg.
78°
44°
19
Hist. Avg.
77°
44°
20
Hist. Avg.
77°
43°
21
Hist. Avg.
77°
43°
22
Hist. Avg.
76°
42°
23
Hist. Avg.
76°
42°
24
Hist. Avg.
76°
42°
25
Hist. Avg.
75°
41°
26
Hist. Avg.
75°
41°
27
Hist. Avg.
74°
40°
28
Hist. Avg.
74°
40°
29
Hist. Avg.
74°
39°
30
Hist. Avg.
73°
39°
1
Hist. Avg.
73°
38°
2
Hist. Avg.
73°
38°
3
Hist. Avg.
72°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Peñasco
Peñasco's September 2026 forecast shows daily high temperatures ranging from 70° to 79°, with overnight lows between 43° and 48°. The average high for September is 76° with an average low of 45°. 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 Peñasco. See also: October | November | December.