S
M
T
W
T
F
S
26
88°
70°
27
86°
70°
28
84°
69°
29
85°
70°
30
89°
71°
31
88°
71°
1
87°
70°
2
88°
71°
3
90°
64°
4
85°
63°
5
85°
65°
6
84°
64°
7
86°
63°
8
85°
62°
9
85°
63°
10
86°
63°
11
86°
69°
12
89°
69°
13
91°
67°
14
86°
67°
15
84°
68°
16
84°
66°
17
88°
62°
18
85°
64°
19
84°
62°
20
84°
62°
21
85°
63°
22
88°
68°
23
89°
67°
24
88°
67°
25
89°
66°
26
90°
65°
27
89°
66°
28
88°
67°
29
87°
65°
30
86°
60°
31
83°
58°
1
81°
57°
2
81°
58°
3
82°
59°
4
83°
63°
5
87°
64°
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 81° to 91°, with overnight lows between 57° and 71°. The average high for August is 86° with an average low of 65°. 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.
