S
M
T
W
T
F
S
26
81°
63°
27
91°
64°
28
93°
63°
29
93°
56°
30
86°
55°
31
88°
54°
1
83°
52°
2
81°
54°
3
83°
57°
4
84°
56°
5
86°
57°
6
88°
59°
7
89°
62°
8
91°
63°
9
92°
62°
10
92°
64°
11
91°
60°
12
92°
52°
13
81°
50°
14
78°
51°
15
79°
56°
16
80°
53°
17
80°
58°
18
85°
61°
19
90°
62°
20
91°
63°
21
91°
62°
22
89°
60°
23
90°
55°
24
83°
50°
25
76°
55°
26
77°
57°
27
76°
57°
28
77°
56°
29
82°
53°
30
77°
51°
31
80°
53°
1
79°
55°
2
84°
53°
3
81°
55°
4
83°
55°
5
84°
56°
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 93°, with overnight lows between 50° and 64°. The average high for August is 85° with an average low of 57°. 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.