S
M
T
W
T
F
S
30
71°
47°
31
89°
46°
1
71°
52°
2
68°
51°
3
64°
50°
4
67°
46°
5
64°
46°
6
63°
45°
7
66°
49°
8
79°
43°
9
85°
48°
10
73°
53°
11
69°
48°
12
71°
46°
13
54°
51°
14
60°
52°
15
64°
47°
16
80°
47°
17
54°
39°
18
45°
39°
19
50°
41°
20
48°
41°
21
42°
32°
22
52°
30°
23
54°
31°
24
54°
32°
25
53°
31°
26
49°
31°
27
54°
33°
28
52°
31°
29
50°
30°
30
50°
28°
1
44°
23°
2
47°
31°
3
46°
24°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Johnston Ridge Observatory
Johnston Ridge Observatory's September 2026 forecast shows daily high temperatures ranging from 42° to 54°, with overnight lows between 23° and 41°. The average high for September is 50° with an average low of 32°. 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 Johnston Ridge Observatory. See also: October | November | December.
