S
M
T
W
T
F
S
30
67°
48°
31
66°
49°
1
65°
52°
2
65°
51°
3
63°
52°
4
62°
52°
5
64°
49°
6
62°
52°
7
63°
48°
8
62°
47°
9
64°
48°
10
65°
50°
11
64°
51°
12
63°
51°
13
61°
50°
14
59°
47°
15
59°
46°
16
60°
46°
17
59°
44°
18
58°
45°
19
58°
47°
20
59°
46°
21
59°
45°
22
60°
46°
23
59°
47°
24
58°
46°
25
58°
47°
26
60°
49°
27
60°
49°
28
61°
49°
29
Hist. Avg.
57°
46°
30
Hist. Avg.
57°
46°
1
Hist. Avg.
56°
46°
2
Hist. Avg.
56°
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 Blackburn
Blackburn's September 2026 forecast shows daily high temperatures ranging from 58° to 67°, with overnight lows between 44° and 52°. The average high for September is 61° 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 Blackburn. See also: October | November | December.
