S
M
T
W
T
F
S
26
89°
76°
27
90°
69°
28
89°
69°
29
90°
70°
30
89°
71°
31
91°
74°
1
91°
76°
2
91°
72°
3
90°
71°
4
87°
69°
5
88°
70°
6
88°
70°
7
89°
69°
8
89°
69°
9
90°
73°
10
93°
73°
11
90°
74°
12
90°
74°
13
91°
73°
14
93°
74°
15
93°
71°
16
94°
69°
17
90°
70°
18
91°
72°
19
93°
67°
20
89°
66°
21
87°
66°
22
87°
68°
23
88°
67°
24
93°
68°
25
92°
69°
26
92°
71°
27
93°
69°
28
88°
66°
29
87°
71°
30
89°
70°
31
90°
70°
1
90°
68°
2
89°
70°
3
91°
69°
4
89°
69°
5
85°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Saint Paul
Saint Paul's August 2026 forecast shows daily high temperatures ranging from 85° to 94°, with overnight lows between 64° and 76°. The average high for August is 90° with an average low of 70°. 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 Paul. See also: September | October | November.