S
M
T
W
T
F
S
30
84°
63°
31
83°
63°
1
84°
58°
2
76°
55°
3
75°
55°
4
75°
56°
5
76°
54°
6
80°
59°
7
82°
61°
8
81°
61°
9
78°
60°
10
81°
61°
11
82°
60°
12
82°
61°
13
83°
61°
14
81°
51°
15
74°
51°
16
71°
50°
17
73°
51°
18
71°
49°
19
72°
50°
20
71°
50°
21
77°
51°
22
77°
55°
23
76°
47°
24
77°
46°
25
71°
46°
26
69°
48°
27
73°
53°
28
73°
53°
29
75°
44°
30
70°
45°
1
66°
50°
2
68°
50°
3
71°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Morristown
Morristown's September 2026 forecast shows daily high temperatures ranging from 66° to 84°, with overnight lows between 44° and 63°. The average high for September is 76° with an average low of 54°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Morristown. See also: October | November | December.
