S
M
T
W
T
F
S
30
82°
56°
31
81°
56°
1
78°
55°
2
81°
55°
3
83°
54°
4
82°
55°
5
80°
55°
6
78°
52°
7
82°
54°
8
83°
55°
9
83°
55°
10
82°
54°
11
82°
54°
12
81°
53°
13
81°
53°
14
72°
47°
15
73°
48°
16
74°
53°
17
81°
54°
18
82°
52°
19
81°
51°
20
80°
52°
21
81°
52°
22
80°
49°
23
77°
48°
24
74°
50°
25
78°
51°
26
78°
51°
27
79°
50°
28
78°
50°
29
76°
47°
30
77°
48°
1
75°
46°
2
66°
39°
3
67°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Blue Lake Junction
Blue Lake Junction's September 2026 forecast shows daily high temperatures ranging from 66° to 83°, with overnight lows between 39° and 56°. The average high for September is 79° with an average low of 51°. 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 Blue Lake Junction. See also: October | November | December.
