S
M
T
W
T
F
S
26
99°
73°
27
100°
75°
28
89°
69°
29
94°
69°
30
91°
71°
31
76°
65°
1
86°
62°
2
83°
63°
3
85°
66°
4
80°
61°
5
80°
62°
6
82°
64°
7
84°
66°
8
85°
65°
9
82°
64°
10
81°
62°
11
82°
63°
12
81°
65°
13
80°
66°
14
81°
62°
15
76°
66°
16
84°
66°
17
84°
68°
18
86°
67°
19
84°
65°
20
84°
66°
21
83°
68°
22
86°
67°
23
84°
66°
24
84°
66°
25
80°
65°
26
74°
63°
27
73°
61°
28
80°
64°
29
82°
64°
30
83°
66°
31
84°
65°
1
83°
64°
2
83°
65°
3
84°
66°
4
84°
65°
5
82°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in St. Paul
St. Paul's August 2026 forecast shows daily high temperatures ranging from 73° to 86°, with overnight lows between 61° and 68°. The average high for August is 82° with an average low of 65°. 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. Paul. See also: September | October | November.