S
M
T
W
T
F
S
31
N/A
1
98°
70°
2
94°
70°
3
83°
69°
4
85°
69°
5
84°
70°
6
88°
69°
7
91°
71°
8
93°
70°
9
91°
70°
10
91°
69°
11
90°
69°
12
92°
68°
13
92°
69°
14
91°
68°
15
95°
72°
16
93°
71°
17
90°
66°
18
84°
66°
19
84°
68°
20
87°
72°
21
89°
72°
22
90°
71°
23
89°
69°
24
90°
72°
25
91°
73°
26
90°
73°
27
90°
72°
28
91°
73°
29
91°
74°
30
93°
73°
1
95°
74°
2
96°
74°
3
97°
75°
4
98°
75°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Newcastle
Newcastle's June 2026 forecast shows daily high temperatures ranging from 83° to 98°, with overnight lows between 66° and 75°. The average high for June is 91° with an average low of 71°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in Newcastle. See also: July | August | September.
