S
M
T
W
T
F
S
26
61°
38°
27
70°
38°
28
66°
43°
29
64°
48°
30
64°
43°
1
61°
43°
2
57°
41°
3
60°
42°
4
66°
48°
5
68°
50°
6
66°
51°
7
65°
51°
8
63°
45°
9
62°
48°
10
65°
46°
11
63°
48°
12
66°
51°
13
67°
49°
14
66°
47°
15
65°
46°
16
64°
47°
17
64°
46°
18
66°
47°
19
71°
54°
20
71°
50°
21
68°
48°
22
67°
47°
23
68°
48°
24
69°
52°
25
76°
57°
26
75°
50°
27
69°
50°
28
69°
51°
29
71°
55°
30
78°
58°
31
79°
58°
1
77°
57°
2
80°
60°
3
81°
61°
4
81°
60°
5
80°
55°
6
73°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in New Brunswick
New Brunswick's May 2026 forecast shows daily high temperatures ranging from 57° to 81°, with overnight lows between 41° and 61°. The average high for May is 69° with an average low of 50°. 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 New Brunswick. See also: June | July | August.
