S
M
T
W
T
F
S
26
89°
74°
27
92°
73°
28
92°
73°
29
90°
72°
30
91°
74°
31
90°
73°
1
89°
73°
2
92°
74°
3
91°
75°
4
92°
74°
5
90°
75°
6
90°
74°
7
91°
73°
8
89°
73°
9
91°
74°
10
90°
74°
11
91°
75°
12
89°
74°
13
89°
74°
14
90°
75°
15
90°
73°
16
91°
74°
17
91°
74°
18
90°
75°
19
90°
72°
20
91°
74°
21
91°
74°
22
90°
73°
23
89°
74°
24
88°
73°
25
89°
74°
26
88°
72°
27
87°
72°
28
90°
74°
29
90°
74°
30
87°
73°
31
87°
73°
1
86°
72°
2
87°
72°
3
87°
73°
4
88°
72°
5
88°
74°
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 86° to 92°, with overnight lows between 72° and 75°. The average high for August is 90° with an average low of 74°. 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.
