S
M
T
W
T
F
S
26
71°
56°
27
70°
55°
28
70°
57°
29
67°
56°
30
66°
55°
31
66°
53°
1
67°
52°
2
66°
51°
3
67°
53°
4
70°
57°
5
70°
57°
6
68°
56°
7
66°
55°
8
66°
53°
9
67°
56°
10
67°
54°
11
70°
56°
12
70°
56°
13
71°
55°
14
71°
56°
15
70°
57°
16
70°
55°
17
70°
55°
18
69°
53°
19
65°
50°
20
65°
50°
21
66°
49°
22
65°
50°
23
65°
53°
24
66°
50°
25
64°
50°
26
64°
54°
27
65°
54°
28
64°
50°
29
65°
49°
30
64°
50°
31
63°
49°
1
65°
50°
2
67°
52°
3
67°
53°
4
66°
48°
5
66°
47°
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 47° and 57°. The average high for August is 67° with an average low of 53°. 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.
