S
M
T
W
T
F
S
31
77°
62°
1
79°
62°
2
81°
63°
3
82°
64°
4
81°
65°
5
80°
65°
6
83°
66°
7
81°
66°
8
81°
65°
9
84°
67°
10
84°
67°
11
85°
66°
12
84°
67°
13
82°
66°
14
82°
67°
15
83°
63°
16
82°
62°
17
83°
64°
18
84°
67°
19
85°
64°
20
85°
65°
21
86°
66°
22
85°
67°
23
86°
68°
24
87°
66°
25
85°
64°
26
85°
64°
27
87°
65°
28
91°
67°
29
91°
69°
30
91°
69°
1
90°
68°
2
87°
68°
3
89°
70°
4
91°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Walnut
Walnut's June 2026 forecast shows daily high temperatures ranging from 77° to 91°, with overnight lows between 62° and 70°. The average high for June is 85° with an average low of 66°. 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 Walnut. See also: July | August | September.
