S
M
T
W
T
F
S
30
85°
56°
31
83°
53°
1
77°
50°
2
74°
45°
3
75°
45°
4
74°
54°
5
78°
47°
6
79°
47°
7
83°
47°
8
91°
48°
9
95°
57°
10
93°
61°
11
92°
63°
12
87°
55°
13
79°
51°
14
80°
47°
15
79°
47°
16
75°
47°
17
72°
46°
18
76°
43°
19
80°
45°
20
81°
51°
21
74°
50°
22
73°
51°
23
82°
54°
24
85°
57°
25
77°
54°
26
77°
54°
27
73°
49°
28
74°
51°
29
78°
50°
30
77°
51°
1
72°
50°
2
72°
45°
3
75°
49°
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 72° to 85°, with overnight lows between 45° and 57°. The average high for September is 76° 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.
