S
M
T
W
T
F
S
26
98°
79°
27
99°
78°
28
99°
79°
29
98°
79°
30
99°
78°
31
100°
79°
1
99°
79°
2
99°
78°
3
98°
78°
4
100°
79°
5
99°
78°
6
99°
78°
7
93°
72°
8
95°
75°
9
97°
71°
10
92°
72°
11
91°
72°
12
97°
69°
13
94°
69°
14
91°
75°
15
91°
75°
16
96°
73°
17
96°
73°
18
95°
68°
19
89°
66°
20
89°
65°
21
90°
67°
22
91°
71°
23
96°
71°
24
96°
73°
25
94°
74°
26
95°
72°
27
94°
70°
28
89°
66°
29
87°
65°
30
86°
66°
31
85°
65°
1
86°
64°
2
86°
63°
3
84°
62°
4
83°
63°
5
84°
65°
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 83° to 100°, with overnight lows between 62° and 79°. The average high for August is 93° with an average low of 72°. 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.
