S
M
T
W
T
F
S
26
105°
81°
27
104°
80°
28
106°
79°
29
105°
76°
30
100°
77°
31
102°
78°
1
103°
74°
2
101°
74°
3
100°
75°
4
100°
76°
5
102°
79°
6
107°
80°
7
107°
80°
8
106°
81°
9
106°
80°
10
107°
79°
11
106°
78°
12
104°
79°
13
103°
78°
14
100°
77°
15
100°
78°
16
104°
78°
17
106°
77°
18
106°
78°
19
105°
76°
20
106°
74°
21
105°
77°
22
104°
77°
23
100°
76°
24
101°
74°
25
99°
74°
26
99°
75°
27
98°
70°
28
98°
69°
29
100°
70°
30
99°
69°
31
99°
71°
1
100°
73°
2
100°
70°
3
99°
69°
4
98°
69°
5
102°
76°
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 98° to 107°, with overnight lows between 69° and 81°. The average high for August is 102° with an average low of 76°. 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.