S
M
T
W
T
F
S
26
95°
68°
27
95°
68°
28
94°
67°
29
94°
69°
30
95°
69°
31
95°
68°
1
96°
69°
2
94°
68°
3
88°
67°
4
93°
68°
5
95°
68°
6
92°
67°
7
87°
67°
8
93°
66°
9
93°
67°
10
93°
68°
11
94°
63°
12
95°
62°
13
87°
65°
14
94°
66°
15
95°
63°
16
96°
62°
17
90°
55°
18
85°
54°
19
83°
54°
20
84°
55°
21
84°
56°
22
85°
57°
23
87°
61°
24
91°
58°
25
91°
58°
26
86°
56°
27
83°
57°
28
84°
61°
29
90°
61°
30
92°
60°
31
92°
53°
1
88°
58°
2
80°
61°
3
89°
60°
4
88°
54°
5
89°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in St. Francis
St. Francis's August 2026 forecast shows daily high temperatures ranging from 80° to 96°, with overnight lows between 52° and 69°. The average high for August is 90° with an average low of 62°. 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. Francis. See also: September | October | November.