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
79°
53°
7
81°
52°
8
84°
52°
9
85°
55°
10
87°
57°
11
88°
58°
12
85°
52°
13
80°
51°
14
79°
53°
15
80°
54°
16
80°
53°
17
79°
52°
18
80°
51°
19
76°
45°
20
68°
40°
21
72°
50°
22
68°
46°
23
68°
41°
24
69°
46°
25
67°
40°
26
68°
41°
27
70°
47°
28
66°
39°
29
65°
35°
30
61°
34°
1
62°
35°
2
63°
34°
3
64°
37°
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 61° to 88°, with overnight lows between 34° and 58°. The average high for September is 74° with an average low of 47°. 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.
