S
M
T
W
T
F
S
30
65°
54°
31
67°
52°
1
73°
50°
2
83°
52°
3
81°
48°
4
84°
53°
5
84°
56°
6
78°
54°
7
78°
50°
8
84°
53°
9
87°
53°
10
88°
51°
11
85°
57°
12
85°
60°
13
89°
54°
14
83°
59°
15
85°
52°
16
75°
58°
17
74°
58°
18
72°
54°
19
73°
50°
20
72°
46°
21
75°
47°
22
69°
51°
23
75°
46°
24
77°
53°
25
77°
50°
26
77°
55°
27
77°
52°
28
67°
51°
29
67°
50°
30
77°
51°
1
77°
49°
2
75°
48°
3
79°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Duchesne
Duchesne's September 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. 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 Duchesne. See also: October | November | December.