S
M
T
W
T
F
S
26
97°
60°
27
86°
62°
28
95°
54°
29
91°
56°
30
90°
53°
31
96°
53°
1
100°
56°
2
93°
52°
3
84°
48°
4
84°
50°
5
87°
52°
6
93°
53°
7
92°
54°
8
92°
53°
9
88°
56°
10
91°
56°
11
90°
57°
12
89°
58°
13
90°
57°
14
85°
51°
15
87°
57°
16
79°
55°
17
82°
52°
18
85°
55°
19
87°
56°
20
83°
55°
21
78°
54°
22
79°
54°
23
83°
53°
24
86°
54°
25
80°
52°
26
83°
53°
27
85°
54°
28
86°
54°
29
86°
53°
30
83°
54°
31
81°
53°
1
80°
54°
2
74°
52°
3
73°
49°
4
75°
51°
5
80°
52°
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 73° to 100°, with overnight lows between 48° and 58°. The average high for August is 85° with an average low of 54°. 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.
