S
M
T
W
T
F
S
28
76°
69°
29
87°
68°
30
91°
66°
1
99°
75°
2
102°
80°
3
103°
79°
4
103°
75°
5
95°
74°
6
84°
72°
7
84°
70°
8
85°
71°
9
88°
70°
10
93°
71°
11
87°
70°
12
88°
67°
13
89°
67°
14
88°
66°
15
86°
67°
16
87°
66°
17
89°
67°
18
87°
70°
19
90°
71°
20
85°
65°
21
83°
64°
22
83°
65°
23
84°
65°
24
84°
67°
25
85°
65°
26
85°
70°
27
87°
70°
28
90°
71°
29
88°
70°
30
89°
70°
31
88°
69°
1
89°
69°
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 83° to 95°, with overnight lows between 64° and 74°. The average high for July is 87° with an average low of 69°. 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.
