S
M
T
W
T
F
S
26
92°
68°
27
89°
65°
28
84°
64°
29
83°
67°
30
85°
68°
31
82°
69°
1
88°
70°
2
91°
70°
3
90°
69°
4
85°
70°
5
83°
69°
6
91°
70°
7
90°
70°
8
91°
68°
9
82°
63°
10
81°
61°
11
82°
67°
12
83°
69°
13
85°
63°
14
81°
60°
15
81°
61°
16
79°
64°
17
83°
65°
18
81°
62°
19
81°
64°
20
85°
67°
21
81°
64°
22
82°
67°
23
83°
66°
24
91°
67°
25
92°
66°
26
91°
57°
27
87°
55°
28
80°
54°
29
78°
55°
30
79°
56°
31
80°
55°
1
84°
52°
2
79°
52°
3
76°
51°
4
76°
51°
5
77°
57°
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 76° to 92°, with overnight lows between 51° and 70°. The average high for August is 84° with an average low of 63°. 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.