S
M
T
W
T
F
S
30
61°
35°
31
58°
34°
1
61°
35°
2
61°
35°
3
58°
33°
4
57°
31°
5
54°
30°
6
57°
31°
7
53°
26°
8
51°
26°
9
53°
26°
10
56°
25°
11
53°
24°
12
52°
29°
13
55°
35°
14
60°
34°
15
62°
29°
16
57°
32°
17
59°
37°
18
59°
35°
19
53°
34°
20
57°
35°
21
59°
31°
22
49°
30°
23
48°
26°
24
48°
27°
25
51°
28°
26
54°
28°
27
52°
23°
28
47°
29°
29
51°
29°
30
52°
28°
1
49°
27°
2
55°
31°
3
55°
28°
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 47° to 62°, with overnight lows between 23° and 37°. The average high for September is 55° with an average low of 30°. 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.
