S
M
T
W
T
F
S
26
98°
78°
27
99°
79°
28
98°
79°
29
99°
78°
30
100°
79°
31
100°
78°
1
98°
77°
2
98°
78°
3
97°
79°
4
99°
79°
5
99°
78°
6
98°
79°
7
99°
79°
8
99°
78°
9
97°
77°
10
94°
77°
11
97°
76°
12
97°
77°
13
96°
77°
14
96°
74°
15
96°
74°
16
95°
74°
17
97°
75°
18
97°
73°
19
96°
68°
20
89°
67°
21
87°
66°
22
88°
67°
23
89°
67°
24
94°
70°
25
95°
72°
26
95°
72°
27
94°
71°
28
95°
73°
29
95°
72°
30
94°
71°
31
93°
69°
1
93°
65°
2
92°
63°
3
88°
65°
4
91°
71°
5
92°
71°
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 87° to 100°, with overnight lows between 63° and 79°. The average high for August is 95° 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.
