S
M
T
W
T
F
S
30
95°
62°
31
93°
52°
1
83°
50°
2
81°
54°
3
89°
59°
4
91°
58°
5
91°
51°
6
83°
47°
7
76°
47°
8
76°
54°
9
74°
53°
10
75°
56°
11
77°
44°
12
75°
50°
13
76°
56°
14
84°
52°
15
75°
50°
16
73°
45°
17
72°
44°
18
74°
47°
19
79°
46°
20
80°
49°
21
80°
47°
22
75°
41°
23
69°
44°
24
71°
52°
25
77°
44°
26
70°
41°
27
69°
46°
28
70°
44°
29
69°
47°
30
71°
45°
1
67°
42°
2
70°
45°
3
74°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Tucannon
Tucannon's September 2026 forecast shows daily high temperatures ranging from 67° to 95°, with overnight lows between 41° and 62°. The average high for September is 77° with an average low of 49°. 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 Tucannon. See also: October | November | December.
