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
93°
73°
6
86°
71°
7
83°
71°
8
85°
71°
9
88°
73°
10
93°
71°
11
88°
67°
12
84°
64°
13
86°
65°
14
88°
66°
15
87°
67°
16
88°
66°
17
91°
69°
18
91°
70°
19
90°
68°
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 93°, with overnight lows between 64° and 73°. The average high for July is 87° with an average low of 68°. 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.
