S
M
T
W
T
F
S
30
70°
59°
31
64°
57°
1
68°
55°
2
64°
59°
3
68°
60°
4
66°
58°
5
N/A
6
74°
58°
7
66°
54°
8
61°
52°
9
62°
50°
10
64°
57°
11
63°
52°
12
63°
52°
13
64°
53°
14
65°
54°
15
63°
54°
16
63°
55°
17
64°
52°
18
63°
51°
19
61°
53°
20
64°
54°
21
65°
55°
22
65°
54°
23
64°
54°
24
65°
52°
25
61°
49°
26
61°
48°
27
62°
47°
28
62°
48°
29
61°
52°
30
61°
49°
1
60°
52°
2
62°
51°
3
62°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Preston
Preston's September 2026 forecast shows daily high temperatures ranging from 60° to 74°, with overnight lows between 47° and 58°. The average high for September is 63° with an average low of 52°. 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 Preston. See also: October | November | December.