S
M
T
W
T
F
S
26
101°
76°
27
101°
77°
28
100°
76°
29
102°
77°
30
102°
78°
31
101°
78°
1
102°
77°
2
102°
78°
3
103°
78°
4
103°
77°
5
102°
78°
6
103°
78°
7
102°
77°
8
103°
78°
9
103°
77°
10
100°
74°
11
100°
74°
12
99°
72°
13
98°
73°
14
100°
75°
15
99°
74°
16
100°
75°
17
100°
70°
18
99°
66°
19
94°
66°
20
91°
65°
21
91°
65°
22
92°
66°
23
91°
66°
24
92°
67°
25
94°
68°
26
95°
68°
27
96°
72°
28
97°
71°
29
93°
71°
30
97°
70°
31
96°
68°
1
95°
71°
2
96°
69°
3
94°
69°
4
90°
68°
5
93°
69°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Seymour
Seymour's August 2026 forecast shows daily high temperatures ranging from 90° to 103°, with overnight lows between 65° and 78°. The average high for August is 98° with an average low of 72°. 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 Seymour. See also: September | October | November.