S
M
T
W
T
F
S
26
86°
58°
27
91°
61°
28
95°
62°
29
96°
53°
30
89°
57°
31
89°
54°
1
88°
53°
2
88°
54°
3
89°
53°
4
87°
51°
5
88°
52°
6
87°
53°
7
87°
57°
8
91°
55°
9
90°
59°
10
94°
61°
11
95°
54°
12
93°
49°
13
85°
48°
14
82°
49°
15
83°
50°
16
84°
53°
17
84°
53°
18
90°
59°
19
93°
58°
20
93°
60°
21
94°
59°
22
94°
57°
23
93°
56°
24
87°
55°
25
83°
56°
26
82°
56°
27
89°
55°
28
82°
48°
29
83°
47°
30
80°
46°
31
80°
50°
1
81°
49°
2
85°
46°
3
79°
50°
4
81°
53°
5
88°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in St. Xavier
St. Xavier's August 2026 forecast shows daily high temperatures ranging from 79° to 96°, with overnight lows between 46° and 62°. The average high for August is 88° 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 St. Xavier. See also: September | October | November.