S
M
T
W
T
F
S
30
82°
57°
31
82°
57°
1
83°
58°
2
84°
59°
3
82°
62°
4
86°
56°
5
82°
61°
6
84°
59°
7
80°
60°
8
84°
60°
9
81°
59°
10
80°
60°
11
83°
59°
12
85°
59°
13
83°
58°
14
84°
60°
15
85°
59°
16
83°
59°
17
83°
56°
18
82°
52°
19
78°
51°
20
78°
49°
21
76°
50°
22
75°
52°
23
78°
53°
24
81°
49°
25
80°
53°
26
81°
54°
27
79°
53°
28
79°
52°
29
78°
51°
30
79°
51°
1
77°
49°
2
78°
52°
3
74°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Blaine
Blaine's September 2026 forecast shows daily high temperatures ranging from 74° to 86°, with overnight lows between 49° and 62°. The average high for September is 81° with an average low of 55°. 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 Blaine. See also: October | November | December.
