S
M
T
W
T
F
S
30
67°
55°
31
66°
54°
1
67°
54°
2
67°
51°
3
65°
54°
4
65°
55°
5
68°
53°
6
67°
54°
7
66°
50°
8
65°
52°
9
65°
50°
10
63°
53°
11
64°
54°
12
62°
52°
13
Hist. Avg.
60°
48°
14
Hist. Avg.
60°
48°
15
Hist. Avg.
60°
48°
16
Hist. Avg.
60°
48°
17
Hist. Avg.
59°
48°
18
Hist. Avg.
59°
48°
19
Hist. Avg.
59°
47°
20
Hist. Avg.
59°
47°
21
Hist. Avg.
59°
47°
22
Hist. Avg.
59°
47°
23
Hist. Avg.
58°
47°
24
Hist. Avg.
58°
47°
25
Hist. Avg.
58°
47°
26
Hist. Avg.
58°
47°
27
Hist. Avg.
58°
46°
28
Hist. Avg.
57°
46°
29
Hist. Avg.
57°
46°
30
Hist. Avg.
57°
46°
1
Hist. Avg.
57°
46°
2
Hist. Avg.
57°
46°
3
Hist. Avg.
56°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Berwick-upon-Tweed
Berwick-upon-Tweed's September 2026 forecast shows daily high temperatures ranging from 62° to 68°, with overnight lows between 50° and 55°. The average high for September is 66° with an average low of 53°. 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 Berwick-upon-Tweed. See also: October | November | December.