S
M
T
W
T
F
S
30
88°
62°
31
87°
68°
1
89°
69°
2
94°
63°
3
93°
61°
4
86°
62°
5
86°
61°
6
87°
60°
7
86°
59°
8
84°
62°
9
86°
63°
10
90°
67°
11
92°
68°
12
92°
68°
13
94°
63°
14
93°
59°
15
90°
59°
16
87°
60°
17
87°
61°
18
90°
62°
19
91°
63°
20
90°
60°
21
90°
60°
22
84°
61°
23
83°
56°
24
82°
54°
25
81°
55°
26
80°
57°
27
80°
58°
28
85°
60°
29
83°
55°
30
81°
55°
1
Hist. Avg.
84°
57°
2
Hist. Avg.
83°
56°
3
Hist. Avg.
83°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Orosi
Orosi's September 2026 forecast shows daily high temperatures ranging from 80° to 94°, with overnight lows between 54° and 69°. The average high for September is 87° with an average low of 61°. 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 Orosi. See also: October | November | December.