S
M
T
W
T
F
S
26
99°
75°
27
102°
69°
28
98°
64°
29
96°
66°
30
77°
64°
31
92°
59°
1
105°
62°
2
93°
69°
3
73°
47°
4
78°
43°
5
88°
53°
6
96°
52°
7
88°
55°
8
92°
58°
9
93°
54°
10
85°
58°
11
88°
59°
12
87°
58°
13
80°
57°
14
80°
58°
15
85°
57°
16
86°
58°
17
87°
60°
18
91°
62°
19
88°
63°
20
89°
63°
21
88°
62°
22
87°
62°
23
88°
61°
24
88°
60°
25
76°
58°
26
76°
57°
27
81°
59°
28
88°
61°
29
89°
61°
30
88°
60°
31
85°
59°
1
84°
60°
2
87°
58°
3
81°
58°
4
78°
57°
5
83°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Glendive
Glendive's August 2026 forecast shows daily high temperatures ranging from 76° to 96°, with overnight lows between 52° and 63°. The average high for August is 86° with an average low of 59°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Glendive. See also: September | October | November.