S
M
T
W
T
F
S
26
68°
40°
27
60°
49°
28
59°
48°
29
66°
48°
30
74°
47°
1
71°
50°
2
74°
52°
3
80°
52°
4
81°
53°
5
66°
55°
6
59°
53°
7
64°
50°
8
64°
50°
9
68°
49°
10
67°
50°
11
71°
54°
12
83°
53°
13
61°
50°
14
61°
47°
15
55°
44°
16
55°
44°
17
65°
45°
18
67°
47°
19
68°
49°
20
68°
50°
21
75°
51°
22
69°
51°
23
68°
50°
24
68°
50°
25
69°
49°
26
67°
48°
27
67°
51°
28
62°
50°
29
63°
46°
30
65°
46°
31
70°
51°
1
71°
54°
2
64°
52°
3
63°
48°
4
63°
47°
5
64°
50°
6
63°
50°
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 55° to 75°, with overnight lows between 44° and 54°. The average high for May is 65° with an average low of 49°. 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.
