S
M
T
W
T
F
S
28
73°
68°
29
86°
64°
30
88°
63°
1
97°
66°
2
104°
76°
3
102°
77°
4
99°
75°
5
91°
72°
6
85°
71°
7
86°
66°
8
86°
66°
9
91°
67°
10
90°
66°
11
90°
69°
12
86°
67°
13
89°
66°
14
90°
67°
15
89°
66°
16
84°
63°
17
87°
65°
18
88°
68°
19
90°
69°
20
91°
69°
21
85°
68°
22
86°
69°
23
90°
69°
24
90°
68°
25
89°
69°
26
91°
69°
27
91°
68°
28
90°
69°
29
90°
69°
30
91°
70°
31
92°
70°
1
90°
69°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Glenn Dale
Glenn Dale's July 2026 forecast shows daily high temperatures ranging from 84° to 104°, with overnight lows between 63° and 77°. The average high for July is 90° 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 Glenn Dale. See also: August | September | October.