S
M
T
W
T
F
S
26
55°
46°
27
64°
44°
28
68°
45°
29
73°
48°
30
77°
54°
1
78°
57°
2
72°
54°
3
60°
50°
4
54°
48°
5
59°
48°
6
68°
53°
7
77°
55°
8
77°
55°
9
80°
58°
10
82°
61°
11
88°
63°
12
91°
61°
13
84°
59°
14
80°
57°
15
77°
54°
16
78°
55°
17
78°
54°
18
77°
53°
19
75°
52°
20
78°
52°
21
72°
50°
22
73°
51°
23
76°
53°
24
78°
53°
25
79°
52°
26
78°
51°
27
81°
53°
28
78°
52°
29
83°
58°
30
84°
59°
31
85°
59°
1
85°
58°
2
84°
59°
3
81°
56°
4
77°
57°
5
77°
56°
6
78°
55°
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 72° to 91°, with overnight lows between 50° and 63°. The average high for May is 80° with an average low of 56°. 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.
