S
M
T
W
T
F
S
30
91°
71°
31
92°
69°
1
90°
69°
2
87°
68°
3
88°
69°
4
87°
68°
5
85°
68°
6
85°
69°
7
84°
66°
8
85°
68°
9
87°
67°
10
85°
68°
11
84°
63°
12
86°
67°
13
90°
67°
14
86°
61°
15
84°
60°
16
83°
61°
17
82°
60°
18
84°
61°
19
88°
61°
20
87°
65°
21
87°
64°
22
82°
65°
23
86°
64°
24
84°
59°
25
82°
59°
26
85°
58°
27
85°
60°
28
84°
60°
29
85°
62°
30
85°
62°
1
84°
61°
2
85°
61°
3
85°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Davisville
Davisville's September 2026 forecast shows daily high temperatures ranging from 82° to 92°, with overnight lows between 58° and 71°. The average high for September is 86° 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 Davisville. See also: October | November | December.