S
M
T
W
T
F
S
26
98°
75°
27
94°
71°
28
89°
62°
29
86°
62°
30
90°
63°
31
85°
65°
1
87°
63°
2
93°
65°
3
96°
68°
4
75°
52°
5
76°
52°
6
78°
61°
7
81°
60°
8
81°
61°
9
90°
53°
10
88°
53°
11
82°
50°
12
78°
48°
13
74°
47°
14
74°
45°
15
71°
46°
16
76°
47°
17
77°
41°
18
76°
43°
19
77°
42°
20
76°
42°
21
77°
41°
22
76°
40°
23
76°
41°
24
77°
44°
25
78°
42°
26
75°
41°
27
77°
43°
28
78°
44°
29
77°
43°
30
78°
44°
31
78°
43°
1
77°
42°
2
77°
43°
3
76°
42°
4
75°
42°
5
74°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Florissant
Florissant's August 2026 forecast shows daily high temperatures ranging from 71° to 90°, with overnight lows between 40° and 61°. The average high for August is 77° with an average low of 46°. 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 Florissant. See also: September | October | November.