S
M
T
W
T
F
S
28
79°
72°
29
85°
69°
30
89°
65°
1
96°
74°
2
99°
77°
3
100°
79°
4
100°
72°
5
91°
71°
6
87°
73°
7
84°
71°
8
83°
71°
9
89°
73°
10
89°
72°
11
N/A
12
81°
67°
13
84°
64°
14
88°
68°
15
98°
74°
16
94°
68°
17
91°
68°
18
89°
70°
19
92°
67°
20
88°
66°
21
85°
67°
22
84°
66°
23
84°
67°
24
83°
67°
25
84°
66°
26
82°
66°
27
82°
68°
28
85°
69°
29
87°
66°
30
81°
67°
31
81°
68°
1
82°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
July Weather in Newmarket
Newmarket's July 2026 forecast shows daily high temperatures ranging from 81° to 98°, with overnight lows between 64° and 74°. The average high for July is 86° with an average low of 67°. 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 Newmarket. See also: August | September | October.