S
M
T
W
T
F
S
30
82°
63°
31
76°
59°
1
76°
58°
2
77°
62°
3
77°
63°
4
80°
63°
5
81°
62°
6
83°
62°
7
83°
61°
8
84°
62°
9
85°
55°
10
83°
51°
11
76°
58°
12
77°
60°
13
81°
51°
14
83°
46°
15
74°
46°
16
71°
47°
17
71°
50°
18
72°
56°
19
72°
56°
20
74°
55°
21
77°
54°
22
79°
55°
23
82°
54°
24
81°
55°
25
81°
57°
26
80°
51°
27
79°
43°
28
75°
42°
29
67°
44°
30
66°
43°
1
67°
47°
2
66°
43°
3
67°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Peru
Peru's September 2026 forecast shows daily high temperatures ranging from 66° to 85°, with overnight lows between 41° and 63°. The average high for September is 77° with an average low of 54°. 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 Peru. See also: October | November | December.
