S
M
T
W
T
F
S
30
71°
57°
31
75°
57°
1
77°
58°
2
77°
58°
3
74°
54°
4
70°
52°
5
70°
56°
6
76°
52°
7
68°
51°
8
73°
55°
9
75°
57°
10
76°
55°
11
76°
46°
12
71°
54°
13
68°
51°
14
69°
55°
15
71°
55°
16
73°
54°
17
75°
55°
18
73°
54°
19
72°
54°
20
73°
46°
21
72°
42°
22
63°
51°
23
63°
50°
24
65°
52°
25
68°
52°
26
72°
44°
27
71°
41°
28
61°
40°
29
62°
45°
30
61°
42°
1
58°
40°
2
59°
44°
3
60°
48°
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 58° to 77°, with overnight lows between 40° and 58°. The average high for September is 70° with an average low of 51°. 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.
