S
M
T
W
T
F
S
26
73°
61°
27
70°
57°
28
81°
63°
29
77°
61°
30
N/A
31
74°
48°
1
75°
49°
2
80°
59°
3
85°
60°
4
79°
60°
5
75°
57°
6
72°
56°
7
73°
54°
8
72°
53°
9
75°
56°
10
76°
57°
11
76°
56°
12
77°
55°
13
75°
56°
14
75°
58°
15
74°
58°
16
74°
57°
17
73°
57°
18
73°
56°
19
72°
57°
20
72°
56°
21
70°
56°
22
67°
54°
23
67°
56°
24
68°
55°
25
68°
56°
26
69°
56°
27
70°
55°
28
69°
54°
29
66°
55°
30
66°
54°
31
67°
51°
1
65°
51°
2
65°
54°
3
66°
51°
4
64°
49°
5
64°
49°
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 64° to 85°, with overnight lows between 48° and 60°. The average high for August is 72° with an average low of 55°. 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.
