S
M
T
W
T
F
S
26
95°
61°
27
94°
61°
28
94°
60°
29
93°
61°
30
95°
61°
31
95°
60°
1
94°
61°
2
92°
60°
3
94°
60°
4
93°
61°
5
94°
61°
6
92°
60°
7
89°
60°
8
90°
59°
9
88°
59°
10
87°
58°
11
89°
59°
12
86°
52°
13
84°
51°
14
87°
53°
15
91°
59°
16
90°
58°
17
89°
57°
18
91°
53°
19
85°
49°
20
81°
52°
21
84°
49°
22
85°
54°
23
84°
56°
24
86°
54°
25
87°
55°
26
86°
52°
27
84°
54°
28
83°
52°
29
80°
52°
30
82°
50°
31
82°
52°
1
83°
51°
2
81°
49°
3
80°
50°
4
80°
45°
5
78°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Brigham City
Brigham City's August 2026 forecast shows daily high temperatures ranging from 78° to 95°, with overnight lows between 45° and 61°. The average high for August is 88° with an average low of 55°. 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 Brigham City. See also: September | October | November.