S
M
T
W
T
F
S
28
84°
66°
29
86°
66°
30
90°
69°
1
98°
70°
2
99°
67°
3
99°
67°
4
100°
69°
5
95°
66°
6
93°
64°
7
91°
68°
8
89°
69°
9
91°
67°
10
88°
65°
11
86°
70°
12
81°
68°
13
78°
68°
14
87°
55°
15
96°
62°
16
97°
70°
17
95°
71°
18
87°
68°
19
87°
69°
20
88°
66°
21
87°
65°
22
85°
64°
23
84°
65°
24
83°
64°
25
83°
65°
26
84°
65°
27
85°
64°
28
88°
67°
29
90°
65°
30
85°
67°
31
84°
67°
1
87°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Martinsville Speedway
Martinsville Speedway's July 2026 forecast shows daily high temperatures ranging from 83° to 97°, with overnight lows between 55° and 71°. The average high for July is 87° 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 Martinsville Speedway. See also: August | September | October.