S
M
T
W
T
F
S
26
87°
69°
27
92°
71°
28
90°
65°
29
64°
56°
30
63°
53°
1
64°
51°
2
76°
43°
3
81°
49°
4
85°
59°
5
87°
53°
6
66°
51°
7
75°
44°
8
81°
58°
9
89°
59°
10
81°
60°
11
77°
53°
12
85°
55°
13
94°
65°
14
95°
69°
15
95°
68°
16
93°
71°
17
93°
72°
18
91°
67°
19
84°
61°
20
85°
65°
21
88°
62°
22
83°
64°
23
82°
62°
24
86°
65°
25
86°
67°
26
87°
62°
27
90°
68°
28
89°
67°
29
86°
67°
30
88°
68°
31
86°
68°
1
83°
67°
2
84°
68°
3
90°
69°
4
90°
69°
5
88°
68°
6
84°
70°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Newcastle
Newcastle's May 2026 forecast shows daily high temperatures ranging from 82° to 95°, with overnight lows between 61° and 72°. The average high for May is 88° with an average low of 67°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Newcastle. See also: June | July | August.
