S
M
T
W
T
F
S
28
89°
74°
29
90°
74°
30
94°
75°
1
95°
76°
2
95°
72°
3
96°
71°
4
94°
70°
5
87°
71°
6
86°
71°
7
88°
72°
8
88°
71°
9
89°
71°
10
88°
70°
11
83°
71°
12
86°
68°
13
89°
68°
14
88°
70°
15
88°
71°
16
91°
70°
17
94°
71°
18
91°
70°
19
90°
68°
20
89°
69°
21
85°
67°
22
88°
69°
23
87°
70°
24
90°
69°
25
93°
72°
26
93°
73°
27
90°
73°
28
92°
72°
29
90°
70°
30
89°
72°
31
91°
71°
1
91°
72°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Guam
Guam's July 2026 forecast shows daily high temperatures ranging from 83° to 94°, with overnight lows between 67° and 73°. The average high for July is 89° 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 Guam. See also: August | September | October.
