S
M
T
W
T
F
S
26
70°
62°
27
71°
64°
28
71°
62°
29
72°
63°
30
70°
65°
1
71°
66°
2
72°
66°
3
73°
66°
4
73°
65°
5
68°
63°
6
69°
56°
7
67°
54°
8
70°
49°
9
67°
53°
10
67°
55°
11
69°
61°
12
69°
65°
13
70°
62°
14
67°
62°
15
66°
62°
16
68°
60°
17
69°
62°
18
66°
62°
19
67°
60°
20
68°
54°
21
67°
58°
22
68°
61°
23
70°
55°
24
68°
55°
25
68°
54°
26
65°
53°
27
67°
51°
28
69°
48°
29
69°
50°
30
68°
51°
31
68°
48°
1
66°
49°
2
64°
51°
3
65°
47°
4
65°
52°
5
64°
50°
6
65°
49°
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 64° to 70°, with overnight lows between 47° and 61°. The average high for May is 67° with an average low of 52°. 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.
