S
M
T
W
T
F
S
28
76°
69°
29
87°
68°
30
91°
66°
1
100°
74°
2
102°
76°
3
102°
76°
4
99°
76°
5
95°
72°
6
90°
70°
7
91°
66°
8
90°
67°
9
90°
67°
10
89°
68°
11
90°
70°
12
92°
69°
13
90°
71°
14
91°
68°
15
82°
65°
16
83°
64°
17
86°
67°
18
87°
70°
19
90°
71°
20
90°
70°
21
84°
70°
22
85°
69°
23
89°
71°
24
89°
70°
25
88°
70°
26
90°
71°
27
90°
71°
28
89°
70°
29
89°
70°
30
90°
71°
31
91°
71°
1
89°
70°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Upper Marlboro
Upper Marlboro's July 2026 forecast shows daily high temperatures ranging from 82° to 102°, with overnight lows between 64° and 76°. The average high for July is 90° with an average low of 70°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Upper Marlboro. See also: August | September | October.
