S
M
T
W
T
F
S
26
65°
32°
27
68°
34°
28
60°
35°
29
53°
44°
30
48°
45°
1
64°
37°
2
50°
35°
3
53°
35°
4
68°
33°
5
69°
49°
6
62°
53°
7
65°
40°
8
60°
36°
9
59°
33°
10
61°
50°
11
63°
42°
12
61°
37°
13
54°
35°
14
66°
49°
15
62°
51°
16
73°
50°
17
86°
53°
18
67°
49°
19
91°
50°
20
91°
49°
21
67°
40°
22
69°
43°
23
65°
46°
24
62°
47°
25
62°
52°
26
70°
51°
27
73°
53°
28
71°
52°
29
71°
53°
30
75°
51°
31
76°
53°
1
72°
51°
2
64°
50°
3
64°
51°
4
65°
53°
5
65°
54°
6
72°
54°
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 62° to 91°, with overnight lows between 40° and 54°. The average high for May is 70° with an average low of 50°. 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.
