S
M
T
W
T
F
S
26
100°
77°
27
100°
76°
28
100°
75°
29
100°
78°
30
100°
79°
31
103°
80°
1
90°
70°
2
92°
67°
3
97°
67°
4
99°
76°
5
100°
76°
6
99°
77°
7
95°
74°
8
102°
71°
9
100°
72°
10
100°
77°
11
102°
78°
12
102°
79°
13
104°
82°
14
102°
82°
15
99°
76°
16
102°
81°
17
96°
76°
18
108°
75°
19
106°
81°
20
106°
80°
21
100°
79°
22
99°
76°
23
100°
72°
24
109°
81°
25
106°
75°
26
95°
72°
27
94°
69°
28
95°
72°
29
97°
75°
30
101°
77°
31
100°
76°
1
100°
76°
2
98°
73°
3
94°
71°
4
96°
73°
5
95°
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 94° to 106°, with overnight lows between 69° and 77°. The average high for August is 98° 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.
