S
M
T
W
T
F
S
31
76°
38°
1
75°
45°
2
77°
45°
3
82°
43°
4
84°
46°
5
87°
50°
6
86°
58°
7
83°
62°
8
74°
55°
9
79°
58°
10
81°
67°
11
91°
68°
12
90°
64°
13
85°
57°
14
82°
57°
15
74°
50°
16
75°
44°
17
82°
49°
18
87°
65°
19
80°
54°
20
82°
51°
21
82°
52°
22
70°
60°
23
75°
54°
24
81°
56°
25
85°
64°
26
78°
66°
27
79°
61°
28
84°
58°
29
86°
59°
30
88°
60°
1
88°
64°
2
89°
63°
3
83°
62°
4
84°
60°
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 89°, with overnight lows between 54° and 66°. The average high for June is 83° with an average low of 61°. 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.
