S
M
T
W
T
F
S
30
99°
73°
31
101°
76°
1
100°
78°
2
100°
80°
3
100°
79°
4
101°
79°
5
101°
79°
6
99°
75°
7
97°
72°
8
101°
73°
9
97°
71°
10
78°
68°
11
87°
66°
12
92°
68°
13
90°
69°
14
98°
66°
15
100°
80°
16
98°
74°
17
98°
77°
18
98°
77°
19
97°
76°
20
93°
70°
21
82°
69°
22
N/A
23
73°
55°
24
N/A
25
81°
54°
26
82°
63°
27
71°
62°
28
82°
63°
29
87°
61°
30
90°
74°
1
86°
67°
2
72°
55°
3
77°
49°
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 ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. 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.