S
M
T
W
T
F
S
31
79°
47°
1
81°
55°
2
75°
53°
3
82°
57°
4
89°
63°
5
95°
67°
6
95°
71°
7
90°
64°
8
76°
57°
9
77°
60°
10
81°
64°
11
86°
64°
12
85°
64°
13
84°
64°
14
85°
65°
15
87°
63°
16
78°
59°
17
77°
60°
18
79°
61°
19
80°
62°
20
82°
65°
21
82°
66°
22
80°
66°
23
81°
68°
24
82°
67°
25
83°
64°
26
82°
66°
27
87°
68°
28
88°
69°
29
83°
65°
30
82°
63°
1
82°
64°
2
83°
66°
3
85°
70°
4
89°
70°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Upper Marlboro
Upper Marlboro's June 2026 forecast shows daily high temperatures ranging from 75° to 95°, with overnight lows between 53° and 71°. The average high for June is 83° 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 Upper Marlboro. See also: July | August | September.