S
M
T
W
T
F
S
26
80°
54°
27
80°
53°
28
84°
49°
29
82°
50°
30
85°
49°
31
87°
54°
1
89°
55°
2
65°
39°
3
61°
40°
4
70°
45°
5
80°
50°
6
83°
55°
7
84°
55°
8
79°
50°
9
75°
48°
10
77°
48°
11
78°
49°
12
78°
50°
13
77°
48°
14
86°
52°
15
77°
50°
16
79°
49°
17
79°
49°
18
79°
49°
19
80°
50°
20
79°
50°
21
78°
49°
22
77°
49°
23
77°
46°
24
75°
42°
25
66°
41°
26
75°
48°
27
77°
49°
28
76°
48°
29
77°
46°
30
74°
47°
31
74°
48°
1
73°
47°
2
65°
46°
3
68°
43°
4
71°
46°
5
74°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Saint Mary
Saint Mary's August 2026 forecast shows daily high temperatures ranging from 61° to 89°, with overnight lows between 39° and 55°. The average high for August is 76° with an average low of 48°. 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 Saint Mary. See also: September | October | November.
