S
M
T
W
T
F
S
26
90°
58°
27
92°
58°
28
90°
60°
29
92°
59°
30
93°
60°
31
93°
58°
1
94°
60°
2
94°
60°
3
93°
59°
4
94°
61°
5
93°
60°
6
93°
60°
7
92°
59°
8
93°
60°
9
93°
60°
10
92°
59°
11
93°
60°
12
93°
60°
13
92°
58°
14
94°
51°
15
91°
54°
16
88°
50°
17
85°
55°
18
90°
56°
19
91°
58°
20
88°
57°
21
88°
56°
22
91°
58°
23
93°
56°
24
91°
59°
25
91°
59°
26
92°
56°
27
91°
55°
28
87°
55°
29
84°
51°
30
82°
52°
31
84°
51°
1
86°
53°
2
91°
55°
3
90°
50°
4
88°
44°
5
80°
46°
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 80° to 94°, with overnight lows between 44° and 61°. The average high for August is 90° 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.