S
M
T
W
T
F
S
30
84°
48°
31
84°
43°
1
74°
41°
2
68°
39°
3
69°
40°
4
70°
41°
5
74°
47°
6
79°
53°
7
79°
42°
8
78°
41°
9
69°
42°
10
68°
40°
11
68°
42°
12
74°
38°
13
67°
37°
14
65°
47°
15
72°
49°
16
77°
41°
17
70°
43°
18
68°
47°
19
75°
37°
20
66°
35°
21
62°
39°
22
62°
46°
23
67°
35°
24
72°
35°
25
60°
37°
26
61°
43°
27
66°
43°
28
70°
44°
29
63°
40°
30
70°
35°
1
64°
32°
2
56°
38°
3
57°
31°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Gainsborough
Gainsborough's September 2026 forecast shows daily high temperatures ranging from 56° to 84°, with overnight lows between 31° and 53°. The average high for September is 69° with an average low of 41°. 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 Gainsborough. See also: October | November | December.
