S
M
T
W
T
F
S
28
86°
67°
29
83°
64°
30
81°
62°
1
80°
62°
2
81°
63°
3
83°
68°
4
86°
68°
5
85°
66°
6
82°
63°
7
82°
64°
8
83°
68°
9
85°
69°
10
87°
69°
11
88°
68°
12
86°
67°
13
90°
68°
14
90°
63°
15
85°
64°
16
84°
63°
17
85°
62°
18
84°
65°
19
84°
68°
20
85°
66°
21
88°
69°
22
89°
64°
23
84°
63°
24
86°
63°
25
88°
64°
26
89°
66°
27
87°
65°
28
89°
63°
29
85°
63°
30
83°
69°
31
85°
64°
1
89°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in New Brunswick
New Brunswick's July 2026 forecast shows daily high temperatures ranging from 80° to 90°, with overnight lows between 62° and 69°. The average high for July is 85° with an average low of 65°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in New Brunswick. See also: August | September | October.