S
M
T
W
T
F
S
31
82°
56°
1
83°
58°
2
81°
55°
3
84°
52°
4
87°
59°
5
83°
68°
6
91°
68°
7
88°
69°
8
77°
69°
9
89°
72°
10
90°
68°
11
87°
67°
12
81°
65°
13
81°
61°
14
73°
56°
15
75°
55°
16
77°
56°
17
79°
61°
18
74°
54°
19
78°
59°
20
79°
62°
21
71°
62°
22
76°
55°
23
78°
57°
24
77°
59°
25
79°
62°
26
79°
64°
27
80°
63°
28
80°
63°
29
85°
64°
30
79°
60°
1
79°
61°
2
80°
67°
3
81°
64°
4
80°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Potomac
Potomac's June 2026 forecast shows daily high temperatures ranging from 71° to 85°, with overnight lows between 54° and 67°. The average high for June is 79° 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 Potomac. See also: July | August | September.