S
M
T
W
T
F
S
30
69°
54°
31
66°
53°
1
67°
51°
2
66°
55°
3
66°
56°
4
65°
51°
5
64°
49°
6
63°
51°
7
65°
51°
8
64°
52°
9
64°
54°
10
66°
53°
11
62°
53°
12
62°
54°
13
63°
53°
14
62°
53°
15
65°
54°
16
64°
53°
17
64°
53°
18
63°
52°
19
60°
52°
20
62°
51°
21
63°
52°
22
62°
52°
23
62°
50°
24
63°
51°
25
61°
52°
26
62°
51°
27
62°
51°
28
61°
50°
29
62°
51°
30
61°
51°
1
62°
50°
2
62°
51°
3
61°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Blyth
Blyth's September 2026 forecast shows daily high temperatures ranging from 60° to 69°, with overnight lows between 49° and 56°. The average high for September is 63° with an average low of 52°. 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 Blyth. See also: October | November | December.