S
M
T
W
T
F
S
30
74°
53°
31
73°
52°
1
74°
57°
2
74°
60°
3
75°
61°
4
81°
61°
5
81°
60°
6
80°
53°
7
79°
52°
8
74°
53°
9
73°
51°
10
72°
52°
11
72°
54°
12
71°
52°
13
76°
55°
14
75°
57°
15
75°
57°
16
71°
56°
17
73°
55°
18
74°
56°
19
75°
48°
20
72°
52°
21
72°
48°
22
75°
47°
23
69°
46°
24
68°
47°
25
68°
50°
26
69°
46°
27
68°
48°
28
67°
48°
29
66°
44°
30
66°
44°
1
65°
50°
2
71°
46°
3
71°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Wood River Junction
Wood River Junction's September 2026 forecast shows daily high temperatures ranging from 65° to 81°, with overnight lows between 44° and 61°. The average high for September is 73° 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 Wood River Junction. See also: October | November | December.
