S
M
T
W
T
F
S
26
83°
65°
27
80°
61°
28
78°
60°
29
81°
66°
30
80°
60°
31
81°
64°
1
83°
66°
2
83°
59°
3
80°
60°
4
77°
58°
5
78°
59°
6
79°
61°
7
80°
59°
8
79°
59°
9
82°
63°
10
82°
64°
11
81°
65°
12
83°
65°
13
84°
64°
14
84°
65°
15
85°
59°
16
84°
58°
17
78°
58°
18
79°
63°
19
80°
57°
20
78°
56°
21
77°
57°
22
78°
58°
23
83°
62°
24
85°
63°
25
84°
62°
26
84°
56°
27
78°
55°
28
77°
56°
29
77°
62°
30
80°
62°
31
81°
63°
1
83°
62°
2
82°
58°
3
79°
61°
4
80°
61°
5
81°
60°
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 77° to 85°, with overnight lows between 55° and 66°. The average high for August is 81° with an average low of 61°. 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.