S
M
T
W
T
F
S
31
80°
57°
1
75°
45°
2
80°
49°
3
85°
51°
4
89°
55°
5
90°
62°
6
91°
64°
7
86°
61°
8
77°
46°
9
83°
66°
10
85°
67°
11
96°
70°
12
94°
70°
13
90°
61°
14
91°
65°
15
78°
52°
16
78°
56°
17
81°
67°
18
90°
70°
19
84°
62°
20
85°
57°
21
87°
61°
22
84°
70°
23
71°
58°
24
83°
58°
25
85°
57°
26
86°
69°
27
76°
65°
28
86°
64°
29
89°
66°
30
92°
69°
1
99°
75°
2
100°
75°
3
97°
71°
4
88°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in New Brunswick
New Brunswick's June 2026 forecast shows daily high temperatures ranging from 76° to 100°, with overnight lows between 64° and 75°. The average high for June is 90° with an average low of 69°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in New Brunswick. See also: July | August | September.
