S
M
T
W
T
F
S
30
104°
75°
31
103°
72°
1
104°
76°
2
102°
75°
3
95°
73°
4
102°
73°
5
104°
75°
6
105°
76°
7
105°
74°
8
104°
78°
9
104°
76°
10
87°
72°
11
96°
77°
12
99°
76°
13
100°
72°
14
98°
70°
15
88°
64°
16
87°
65°
17
91°
62°
18
86°
61°
19
82°
60°
20
81°
60°
21
84°
59°
22
89°
65°
23
89°
65°
24
85°
64°
25
78°
64°
26
80°
63°
27
82°
63°
28
85°
64°
29
82°
63°
30
83°
55°
1
73°
50°
2
73°
50°
3
71°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Lima
Lima's September 2026 forecast shows daily high temperatures ranging from 71° to 104°, with overnight lows between 49° and 78°. The average high for September is 87° with an average low of 64°. 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 Lima. See also: October | November | December.