S
M
T
W
T
F
S
30
68°
50°
31
72°
50°
1
67°
49°
2
69°
55°
3
72°
55°
4
68°
53°
5
71°
55°
6
69°
54°
7
73°
52°
8
68°
50°
9
64°
48°
10
64°
50°
11
65°
47°
12
68°
45°
13
63°
49°
14
66°
48°
15
68°
52°
16
68°
45°
17
64°
44°
18
61°
43°
19
60°
45°
20
61°
46°
21
63°
49°
22
63°
45°
23
60°
42°
24
60°
48°
25
61°
46°
26
64°
49°
27
65°
47°
28
65°
41°
29
63°
39°
30
55°
44°
1
57°
46°
2
62°
46°
3
63°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Tyne Valley
Tyne Valley's September 2026 forecast shows daily high temperatures ranging from 55° to 73°, with overnight lows between 39° and 55°. The average high for September is 65° with an average low of 48°. 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 Tyne Valley. See also: October | November | December.