S
M
T
W
T
F
S
30
87°
65°
31
86°
59°
1
82°
58°
2
79°
59°
3
80°
59°
4
81°
60°
5
80°
59°
6
78°
58°
7
79°
58°
8
79°
61°
9
80°
58°
10
77°
57°
11
79°
59°
12
80°
58°
13
79°
57°
14
77°
56°
15
78°
58°
16
78°
56°
17
77°
55°
18
76°
55°
19
79°
54°
20
Hist. Avg.
78°
59°
21
Hist. Avg.
78°
59°
22
Hist. Avg.
78°
58°
23
Hist. Avg.
77°
58°
24
Hist. Avg.
77°
58°
25
Hist. Avg.
76°
57°
26
Hist. Avg.
76°
57°
27
Hist. Avg.
76°
57°
28
Hist. Avg.
75°
56°
29
Hist. Avg.
75°
56°
30
Hist. Avg.
75°
55°
1
Hist. Avg.
74°
55°
2
Hist. Avg.
74°
55°
3
Hist. Avg.
74°
54°
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 76° to 87°, with overnight lows between 54° and 65°. The average high for September is 80° with an average low of 58°. 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.