S
M
T
W
T
F
S
26
92°
73°
27
92°
74°
28
95°
71°
29
91°
70°
30
88°
64°
31
91°
61°
1
90°
70°
2
82°
71°
3
80°
68°
4
89°
67°
5
83°
68°
6
85°
68°
7
88°
69°
8
86°
68°
9
89°
69°
10
88°
68°
11
85°
69°
12
86°
68°
13
87°
69°
14
84°
68°
15
87°
68°
16
86°
69°
17
85°
66°
18
89°
66°
19
93°
70°
20
93°
70°
21
92°
69°
22
90°
69°
23
90°
68°
24
89°
70°
25
89°
69°
26
88°
69°
27
90°
68°
28
90°
68°
29
89°
67°
30
90°
68°
31
90°
68°
1
89°
67°
2
91°
68°
3
90°
67°
4
88°
66°
5
88°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Cornwall Furnace
Cornwall Furnace's August 2026 forecast shows daily high temperatures ranging from 83° to 93°, with overnight lows between 66° and 70°. The average high for August is 88° 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 Cornwall Furnace. See also: September | October | November.
