S
M
T
W
T
F
S
31
77°
45°
1
79°
52°
2
76°
52°
3
82°
50°
4
86°
50°
5
89°
55°
6
89°
60°
7
91°
66°
8
79°
66°
9
84°
64°
10
88°
69°
11
94°
71°
12
94°
69°
13
87°
64°
14
91°
66°
15
78°
63°
16
79°
57°
17
86°
72°
18
91°
70°
19
84°
62°
20
83°
60°
21
85°
66°
22
84°
61°
23
84°
60°
24
85°
61°
25
86°
65°
26
84°
63°
27
86°
66°
28
87°
67°
29
88°
65°
30
79°
63°
1
80°
62°
2
81°
63°
3
82°
68°
4
85°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Herndon
Herndon's June 2026 forecast shows daily high temperatures ranging from 79° to 91°, with overnight lows between 60° and 72°. The average high for June is 84° 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 June weather will actually feel in Herndon. See also: July | August | September.
