S
M
T
W
T
F
S
30
67°
57°
31
66°
56°
1
66°
56°
2
67°
55°
3
66°
56°
4
67°
56°
5
66°
55°
6
65°
56°
7
65°
56°
8
68°
55°
9
69°
55°
10
65°
54°
11
69°
55°
12
65°
55°
13
65°
54°
14
67°
54°
15
63°
53°
16
65°
53°
17
65°
54°
18
67°
54°
19
67°
52°
20
64°
52°
21
67°
49°
22
64°
44°
23
64°
43°
24
57°
48°
25
58°
50°
26
65°
49°
27
65°
50°
28
64°
48°
29
65°
43°
30
63°
43°
1
55°
46°
2
60°
47°
3
63°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Johnstons River
Johnstons River's September 2026 forecast shows daily high temperatures ranging from 55° to 69°, with overnight lows between 41° and 57°. The average high for September is 65° with an average low of 52°. 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 Johnstons River. See also: October | November | December.
