S
M
T
W
T
F
S
28
81°
67°
29
93°
75°
30
90°
72°
1
82°
68°
2
90°
68°
3
85°
67°
4
81°
65°
5
85°
68°
6
86°
69°
7
90°
68°
8
89°
69°
9
87°
67°
10
89°
66°
11
86°
67°
12
87°
67°
13
89°
65°
14
83°
62°
15
84°
65°
16
86°
67°
17
78°
61°
18
79°
66°
19
81°
67°
20
81°
67°
21
84°
68°
22
86°
68°
23
83°
67°
24
82°
68°
25
84°
68°
26
81°
67°
27
83°
67°
28
83°
68°
29
81°
67°
30
83°
66°
31
78°
63°
1
77°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Vermillion
Vermillion's July 2026 forecast shows daily high temperatures ranging from 77° to 90°, with overnight lows between 60° and 69°. The average high for July is 84° with an average low of 66°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Vermillion. See also: August | September | October.