S
M
T
W
T
F
S
28
82°
52°
29
75°
52°
30
79°
50°
1
82°
48°
2
82°
54°
3
81°
55°
4
86°
55°
5
95°
59°
6
81°
55°
7
66°
55°
8
77°
54°
9
91°
61°
10
91°
55°
11
102°
59°
12
108°
63°
13
106°
67°
14
99°
67°
15
104°
69°
16
97°
65°
17
91°
62°
18
91°
59°
19
90°
59°
20
87°
55°
21
84°
57°
22
83°
56°
23
86°
59°
24
85°
62°
25
85°
60°
26
84°
56°
27
78°
59°
28
78°
57°
29
79°
58°
30
79°
60°
31
82°
61°
1
81°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Glen Ullin
Glen Ullin's July 2026 forecast shows daily high temperatures ranging from 78° to 106°, with overnight lows between 55° and 69°. The average high for July is 87° with an average low of 60°. 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 Glen Ullin. See also: August | September | October.