S
M
T
W
T
F
S
30
68°
57°
31
66°
52°
1
70°
50°
2
66°
57°
3
70°
63°
4
64°
55°
5
64°
54°
6
N/A
7
65°
52°
8
59°
47°
9
61°
47°
10
62°
54°
11
63°
49°
12
63°
51°
13
64°
56°
14
65°
55°
15
63°
51°
16
62°
53°
17
62°
53°
18
63°
54°
19
60°
53°
20
63°
55°
21
64°
55°
22
64°
54°
23
63°
55°
24
64°
52°
25
61°
48°
26
61°
47°
27
60°
47°
28
61°
50°
29
60°
52°
30
61°
48°
1
60°
50°
2
61°
51°
3
61°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Blackburn
Blackburn's September 2026 forecast shows daily high temperatures ranging from 59° to 65°, with overnight lows between 47° and 56°. The average high for September is 62° 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 Blackburn. See also: October | November | December.
