S
M
T
W
T
F
S
28
91°
73°
29
92°
72°
30
93°
72°
1
92°
70°
2
94°
71°
3
95°
69°
4
92°
68°
5
88°
67°
6
88°
68°
7
87°
69°
8
82°
69°
9
88°
66°
10
87°
70°
11
85°
70°
12
86°
71°
13
87°
69°
14
90°
69°
15
88°
71°
16
88°
73°
17
84°
71°
18
87°
72°
19
91°
71°
20
89°
70°
21
86°
68°
22
85°
63°
23
82°
61°
24
86°
66°
25
87°
68°
26
88°
70°
27
89°
67°
28
91°
70°
29
86°
67°
30
85°
70°
31
86°
69°
1
86°
71°
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 82° to 91°, with overnight lows between 61° and 73°. The average high for July is 87° with an average low of 69°. 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.
