S
M
T
W
T
F
S
26
58°
41°
27
57°
43°
28
54°
36°
29
61°
32°
30
56°
34°
1
56°
31°
2
69°
25°
3
73°
45°
4
70°
42°
5
55°
33°
6
60°
24°
7
68°
29°
8
78°
41°
9
70°
37°
10
74°
31°
11
85°
36°
12
78°
45°
13
81°
35°
14
83°
51°
15
92°
47°
16
83°
43°
17
83°
56°
18
54°
47°
19
59°
36°
20
60°
32°
21
67°
47°
22
72°
49°
23
75°
44°
24
84°
58°
25
85°
61°
26
88°
60°
27
85°
60°
28
83°
63°
29
76°
58°
30
79°
57°
31
82°
56°
1
81°
54°
2
80°
56°
3
81°
59°
4
81°
58°
5
83°
59°
6
81°
57°
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 76° to 88°, with overnight lows between 54° and 63°. The average high for May is 82° with an average low of 58°. 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.
