S
M
T
W
T
F
S
26
91°
60°
27
93°
60°
28
94°
59°
29
94°
61°
30
95°
61°
31
94°
60°
1
93°
60°
2
93°
59°
3
94°
60°
4
94°
61°
5
92°
61°
6
93°
60°
7
89°
56°
8
92°
58°
9
92°
57°
10
91°
59°
11
93°
60°
12
92°
59°
13
92°
59°
14
89°
58°
15
86°
58°
16
85°
55°
17
86°
58°
18
87°
58°
19
90°
57°
20
89°
58°
21
94°
55°
22
93°
56°
23
92°
55°
24
91°
56°
25
91°
53°
26
85°
52°
27
82°
50°
28
82°
54°
29
83°
54°
30
81°
50°
31
81°
52°
1
82°
54°
2
84°
52°
3
85°
48°
4
79°
46°
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 89° with an average low of 56°. 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.