S
M
T
W
T
F
S
30
80°
52°
31
80°
53°
1
81°
55°
2
80°
51°
3
82°
49°
4
78°
48°
5
77°
47°
6
77°
48°
7
79°
51°
8
78°
47°
9
76°
50°
10
76°
49°
11
77°
47°
12
77°
50°
13
79°
49°
14
78°
43°
15
74°
44°
16
73°
47°
17
73°
48°
18
74°
43°
19
71°
40°
20
70°
41°
21
71°
40°
22
71°
43°
23
75°
47°
24
75°
45°
25
76°
44°
26
76°
44°
27
75°
39°
28
74°
36°
29
65°
37°
30
65°
43°
1
68°
44°
2
73°
47°
3
74°
35°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Vernal
Vernal's September 2026 forecast shows daily high temperatures ranging from 65° to 82°, with overnight lows between 35° and 55°. The average high for September is 75° with an average low of 46°. 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 Vernal. See also: October | November | December.
