S
M
T
W
T
F
S
26
87°
66°
27
87°
67°
28
88°
70°
29
88°
72°
30
89°
72°
31
92°
71°
1
92°
71°
2
88°
73°
3
94°
74°
4
94°
70°
5
95°
66°
6
89°
66°
7
86°
65°
8
85°
65°
9
86°
66°
10
87°
66°
11
89°
69°
12
92°
68°
13
93°
70°
14
92°
69°
15
93°
68°
16
93°
65°
17
89°
64°
18
86°
64°
19
88°
68°
20
92°
69°
21
92°
65°
22
85°
70°
23
91°
71°
24
92°
71°
25
92°
69°
26
91°
70°
27
91°
71°
28
90°
70°
29
90°
70°
30
91°
68°
31
88°
67°
1
87°
66°
2
88°
64°
3
86°
65°
4
85°
68°
5
88°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Deerfield
Deerfield's August 2026 forecast shows daily high temperatures ranging from 85° to 95°, with overnight lows between 64° and 74°. The average high for August is 90° with an average low of 68°. 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 Deerfield. See also: September | October | November.