S
M
T
W
T
F
S
26
92°
64°
27
91°
61°
28
92°
61°
29
94°
66°
30
95°
69°
31
98°
68°
1
98°
68°
2
100°
71°
3
100°
72°
4
100°
71°
5
95°
66°
6
99°
69°
7
98°
70°
8
99°
71°
9
100°
71°
10
96°
67°
11
92°
64°
12
90°
65°
13
80°
58°
14
79°
54°
15
85°
55°
16
90°
61°
17
91°
66°
18
91°
64°
19
96°
69°
20
95°
69°
21
93°
66°
22
92°
67°
23
94°
67°
24
90°
67°
25
89°
66°
26
91°
67°
27
92°
68°
28
91°
66°
29
90°
65°
30
89°
64°
31
91°
65°
1
90°
63°
2
85°
62°
3
89°
64°
4
84°
59°
5
88°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Newcastle
Newcastle's August 2026 forecast shows daily high temperatures ranging from 84° to 96°, with overnight lows between 59° and 69°. The average high for August is 91° with an average low of 65°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Newcastle. See also: September | October | November.
