S
M
T
W
T
F
S
30
86°
68°
31
86°
68°
1
86°
70°
2
86°
70°
3
88°
70°
4
86°
70°
5
86°
70°
6
86°
70°
7
86°
68°
8
N/A
9
87°
70°
10
75°
62°
11
77°
63°
12
77°
60°
13
80°
61°
14
80°
60°
15
81°
63°
16
80°
64°
17
79°
63°
18
79°
63°
19
78°
62°
20
79°
61°
21
74°
56°
22
76°
59°
23
74°
58°
24
75°
56°
25
75°
57°
26
74°
60°
27
75°
58°
28
70°
55°
29
70°
54°
30
71°
56°
1
72°
58°
2
72°
57°
3
71°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Serravalle
Serravalle's September 2026 forecast shows daily high temperatures ranging from 70° to 87°, with overnight lows between 54° and 70°. The average high for September is 76° with an average low of 60°. 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 Serravalle. See also: October | November | December.