S
M
T
W
T
F
S
26
64°
59°
27
70°
57°
28
71°
62°
29
67°
54°
30
66°
52°
31
65°
52°
1
66°
55°
2
66°
55°
3
65°
55°
4
68°
55°
5
66°
55°
6
65°
54°
7
64°
52°
8
65°
55°
9
67°
56°
10
66°
57°
11
65°
57°
12
66°
56°
13
67°
57°
14
67°
57°
15
68°
56°
16
69°
57°
17
67°
57°
18
66°
56°
19
68°
57°
20
68°
57°
21
69°
56°
22
67°
56°
23
68°
57°
24
67°
57°
25
68°
56°
26
67°
57°
27
66°
56°
28
65°
56°
29
65°
55°
30
66°
55°
31
64°
54°
1
64°
55°
2
65°
55°
3
63°
54°
4
63°
55°
5
64°
54°
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 63° to 71°, with overnight lows between 52° and 62°. The average high for August is 66° with an average low of 56°. 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.
