S
M
T
W
T
F
S
26
81°
63°
27
88°
63°
28
66°
55°
29
68°
49°
30
65°
49°
1
68°
47°
2
74°
51°
3
82°
60°
4
86°
70°
5
83°
50°
6
60°
41°
7
73°
56°
8
80°
61°
9
82°
63°
10
79°
56°
11
83°
58°
12
80°
60°
13
80°
59°
14
68°
54°
15
82°
64°
16
81°
63°
17
83°
65°
18
83°
65°
19
84°
66°
20
85°
66°
21
83°
65°
22
76°
60°
23
76°
64°
24
84°
67°
25
82°
61°
26
76°
58°
27
76°
59°
28
80°
64°
29
81°
68°
30
85°
67°
31
86°
69°
1
86°
69°
2
87°
70°
3
88°
70°
4
88°
69°
5
83°
66°
6
81°
63°
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 60° to 88°, with overnight lows between 41° and 70°. The average high for May is 81° with an average low of 62°. 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.
