S
M
T
W
T
F
S
26
85°
69°
27
85°
64°
28
85°
63°
29
86°
67°
30
88°
65°
31
88°
69°
1
90°
67°
2
89°
66°
3
86°
65°
4
84°
63°
5
85°
64°
6
84°
63°
7
85°
63°
8
85°
64°
9
86°
68°
10
88°
66°
11
86°
68°
12
88°
69°
13
89°
69°
14
91°
68°
15
91°
62°
16
87°
63°
17
85°
64°
18
88°
66°
19
90°
61°
20
84°
61°
21
83°
62°
22
83°
61°
23
85°
63°
24
89°
66°
25
90°
65°
26
90°
64°
27
87°
61°
28
82°
60°
29
83°
65°
30
87°
65°
31
88°
64°
1
88°
64°
2
87°
63°
3
86°
64°
4
86°
63°
5
84°
62°
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 82° to 91°, with overnight lows between 60° and 69°. The average high for August is 87° 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.
