S
M
T
W
T
F
S
26
87°
58°
27
90°
56°
28
90°
54°
29
89°
56°
30
88°
53°
31
90°
55°
1
89°
57°
2
91°
57°
3
91°
56°
4
90°
54°
5
91°
56°
6
88°
49°
7
83°
53°
8
86°
51°
9
86°
48°
10
87°
56°
11
87°
55°
12
89°
49°
13
83°
53°
14
87°
55°
15
83°
53°
16
80°
50°
17
79°
47°
18
81°
54°
19
87°
55°
20
88°
51°
21
78°
53°
22
77°
46°
23
79°
47°
24
78°
50°
25
78°
45°
26
77°
50°
27
77°
44°
28
76°
45°
29
77°
49°
30
77°
48°
31
76°
46°
1
77°
43°
2
75°
48°
3
75°
50°
4
76°
42°
5
72°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Rexburg
Rexburg's August 2026 forecast shows daily high temperatures ranging from 72° to 91°, with overnight lows between 42° and 58°. The average high for August is 83° with an average low of 51°. 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 Rexburg. See also: September | October | November.
