S
M
T
W
T
F
S
28
80°
56°
29
83°
58°
30
87°
60°
1
85°
57°
2
85°
59°
3
88°
65°
4
92°
66°
5
87°
62°
6
87°
61°
7
88°
61°
8
90°
64°
9
89°
65°
10
93°
65°
11
92°
68°
12
93°
70°
13
99°
75°
14
98°
74°
15
98°
73°
16
93°
64°
17
95°
65°
18
94°
65°
19
94°
67°
20
93°
67°
21
91°
66°
22
90°
65°
23
89°
63°
24
89°
62°
25
90°
62°
26
89°
61°
27
90°
63°
28
91°
66°
29
95°
67°
30
96°
68°
31
97°
68°
1
96°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Newcastle
Newcastle's July 2026 forecast shows daily high temperatures ranging from 87° to 99°, with overnight lows between 61° and 75°. The average high for July is 92° 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 Newcastle. See also: August | September | October.