S
M
T
W
T
F
S
31
77°
45°
1
79°
53°
2
75°
52°
3
82°
54°
4
87°
61°
5
92°
65°
6
91°
67°
7
87°
63°
8
75°
58°
9
76°
61°
10
84°
66°
11
86°
69°
12
87°
65°
13
84°
62°
14
83°
63°
15
83°
61°
16
76°
60°
17
76°
60°
18
78°
62°
19
79°
62°
20
80°
66°
21
80°
67°
22
79°
67°
23
80°
69°
24
80°
68°
25
81°
65°
26
80°
67°
27
87°
69°
28
86°
70°
29
82°
66°
30
81°
64°
1
81°
64°
2
82°
67°
3
83°
71°
4
87°
71°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Gaithersburg
Gaithersburg's June 2026 forecast shows daily high temperatures ranging from 75° to 92°, with overnight lows between 52° and 71°. The average high for June is 82° with an average low of 64°. 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 Gaithersburg. See also: July | August | September.
