S
M
T
W
T
F
S
26
78°
61°
27
83°
65°
28
84°
62°
29
86°
62°
30
79°
57°
31
83°
61°
1
81°
59°
2
77°
58°
3
78°
59°
4
79°
57°
5
80°
58°
6
79°
60°
7
80°
62°
8
83°
66°
9
81°
63°
10
77°
62°
11
85°
67°
12
85°
66°
13
83°
59°
14
79°
57°
15
76°
56°
16
77°
63°
17
77°
62°
18
76°
57°
19
76°
57°
20
77°
66°
21
76°
66°
22
84°
64°
23
85°
65°
24
83°
57°
25
82°
56°
26
78°
59°
27
74°
63°
28
75°
64°
29
78°
64°
30
80°
63°
31
81°
62°
1
82°
57°
2
78°
57°
3
81°
55°
4
78°
57°
5
80°
60°
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 74° to 86°, with overnight lows between 55° and 67°. The average high for August is 80° with an average low of 61°. 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.