S
M
T
W
T
F
S
30
75°
58°
31
75°
58°
1
76°
52°
2
68°
50°
3
67°
50°
4
67°
50°
5
68°
49°
6
70°
56°
7
75°
56°
8
72°
55°
9
68°
56°
10
72°
56°
11
74°
55°
12
74°
56°
13
75°
57°
14
74°
46°
15
66°
46°
16
63°
47°
17
66°
46°
18
65°
44°
19
64°
45°
20
64°
47°
21
71°
48°
22
71°
51°
23
70°
43°
24
71°
42°
25
65°
42°
26
64°
43°
27
68°
49°
28
68°
49°
29
69°
41°
30
64°
40°
1
60°
42°
2
62°
44°
3
65°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in New Preston
New Preston's September 2026 forecast shows daily high temperatures ranging from 60° to 76°, with overnight lows between 40° and 58°. The average high for September is 69° with an average low of 49°. 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 New Preston. See also: October | November | December.
