S
M
T
W
T
F
S
31
77°
61°
1
75°
55°
2
72°
54°
3
72°
54°
4
73°
55°
5
73°
55°
6
74°
56°
7
74°
56°
8
75°
57°
9
75°
56°
10
76°
56°
11
76°
57°
12
78°
57°
13
78°
56°
14
80°
58°
15
79°
60°
16
83°
61°
17
87°
65°
18
87°
62°
19
85°
63°
20
87°
66°
21
87°
66°
22
86°
65°
23
87°
67°
24
87°
65°
25
88°
68°
26
89°
67°
27
88°
67°
28
89°
68°
29
89°
68°
30
87°
67°
1
90°
63°
2
89°
65°
3
84°
69°
4
89°
69°
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 72° to 90°, with overnight lows between 54° and 69°. The average high for June is 82° with an average low of 62°. 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.
