S
M
T
W
T
F
S
26
52°
40°
27
60°
39°
28
62°
28°
29
64°
31°
30
65°
35°
1
64°
32°
2
74°
33°
3
77°
42°
4
67°
40°
5
65°
37°
6
66°
41°
7
78°
35°
8
83°
46°
9
79°
46°
10
81°
41°
11
88°
46°
12
90°
50°
13
85°
58°
14
80°
47°
15
84°
47°
16
80°
45°
17
74°
32°
18
50°
31°
19
61°
31°
20
68°
33°
21
78°
38°
22
74°
46°
23
81°
50°
24
78°
51°
25
79°
53°
26
81°
53°
27
74°
45°
28
69°
43°
29
72°
42°
30
78°
46°
31
82°
48°
1
87°
52°
2
86°
54°
3
90°
52°
4
88°
53°
5
87°
52°
6
83°
43°
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 69° to 90°, with overnight lows between 42° and 54°. The average high for May is 81° 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.
