S
M
T
W
T
F
S
26
88°
63°
27
83°
62°
28
82°
63°
29
82°
65°
30
84°
66°
31
83°
63°
1
84°
64°
2
82°
66°
3
83°
63°
4
81°
64°
5
82°
68°
6
Hist. Avg.
86°
66°
7
Hist. Avg.
86°
66°
8
Hist. Avg.
86°
66°
9
Hist. Avg.
86°
66°
10
Hist. Avg.
86°
66°
11
Hist. Avg.
86°
66°
12
Hist. Avg.
86°
66°
13
Hist. Avg.
86°
66°
14
Hist. Avg.
86°
66°
15
Hist. Avg.
86°
65°
16
Hist. Avg.
85°
65°
17
Hist. Avg.
85°
65°
18
Hist. Avg.
85°
65°
19
Hist. Avg.
85°
65°
20
Hist. Avg.
85°
65°
21
Hist. Avg.
85°
64°
22
Hist. Avg.
85°
64°
23
Hist. Avg.
85°
64°
24
Hist. Avg.
84°
64°
25
Hist. Avg.
84°
64°
26
Hist. Avg.
84°
63°
27
Hist. Avg.
84°
63°
28
Hist. Avg.
84°
63°
29
Hist. Avg.
84°
63°
30
Hist. Avg.
83°
62°
31
Hist. Avg.
83°
62°
1
Hist. Avg.
83°
62°
2
Hist. Avg.
83°
61°
3
Hist. Avg.
82°
61°
4
Hist. Avg.
82°
61°
5
Hist. Avg.
82°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Monticello
Monticello's August 2026 forecast shows daily high temperatures ranging from 81° to 88°, with overnight lows between 62° and 68°. The average high for August is 83° with an average low of 64°. 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 Monticello. See also: September | October | November.
