S
M
T
W
T
F
S
26
68°
55°
27
67°
54°
28
68°
55°
29
67°
54°
30
68°
56°
31
68°
57°
1
70°
56°
2
68°
54°
3
67°
54°
4
68°
55°
5
69°
55°
6
68°
56°
7
67°
53°
8
68°
56°
9
69°
56°
10
70°
54°
11
70°
54°
12
68°
54°
13
68°
55°
14
67°
54°
15
68°
55°
16
67°
54°
17
68°
55°
18
69°
55°
19
68°
54°
20
65°
56°
21
68°
56°
22
70°
55°
23
67°
52°
24
67°
53°
25
66°
55°
26
66°
55°
27
68°
54°
28
69°
55°
29
65°
53°
30
65°
55°
31
66°
53°
1
66°
54°
2
65°
55°
3
66°
56°
4
67°
55°
5
Hist. Avg.
63°
50°
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 65° to 70°, with overnight lows between 52° and 57°. The average high for August is 68° 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.
