S
M
T
W
T
F
S
31
80°
61°
1
75°
61°
2
80°
59°
3
81°
61°
4
82°
62°
5
82°
62°
6
81°
63°
7
83°
64°
8
83°
61°
9
76°
58°
10
76°
63°
11
83°
64°
12
84°
65°
13
84°
64°
14
76°
63°
15
77°
62°
16
78°
61°
17
78°
60°
18
79°
63°
19
80°
58°
20
79°
58°
21
80°
60°
22
82°
65°
23
81°
66°
24
82°
61°
25
82°
61°
26
83°
62°
27
85°
62°
28
82°
67°
29
89°
69°
30
90°
68°
1
90°
62°
2
86°
62°
3
84°
69°
4
86°
70°
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 75° to 90°, with overnight lows between 58° and 70°. The average high for June is 82° with an average low of 63°. 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.
