S
M
T
W
T
F
S
26
84°
54°
27
86°
64°
28
81°
63°
29
81°
66°
30
79°
66°
31
86°
61°
1
88°
63°
2
85°
73°
3
82°
61°
4
87°
66°
5
80°
71°
6
86°
72°
7
89°
68°
8
86°
69°
9
87°
68°
10
89°
64°
11
84°
63°
12
81°
61°
13
82°
62°
14
81°
61°
15
80°
62°
16
78°
58°
17
85°
61°
18
83°
59°
19
82°
65°
20
84°
62°
21
82°
58°
22
81°
62°
23
85°
65°
24
87°
65°
25
86°
64°
26
84°
64°
27
78°
63°
28
78°
64°
29
83°
62°
30
84°
63°
31
83°
63°
1
84°
58°
2
76°
55°
3
75°
55°
4
75°
56°
5
76°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Morristown
Morristown's August 2026 forecast shows daily high temperatures ranging from 75° to 89°, with overnight lows between 54° and 73°. The average high for August is 83° with an average low of 63°. 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 Morristown. See also: September | October | November.