S
M
T
W
T
F
S
30
78°
61°
31
81°
64°
1
83°
64°
2
84°
61°
3
83°
58°
4
83°
63°
5
82°
61°
6
80°
57°
7
75°
60°
8
73°
61°
9
77°
54°
10
76°
52°
11
74°
62°
12
78°
55°
13
80°
58°
14
78°
59°
15
73°
60°
16
78°
59°
17
Hist. Avg.
73°
50°
18
Hist. Avg.
73°
49°
19
Hist. Avg.
72°
49°
20
Hist. Avg.
72°
48°
21
Hist. Avg.
72°
48°
22
Hist. Avg.
71°
47°
23
Hist. Avg.
71°
47°
24
Hist. Avg.
70°
46°
25
Hist. Avg.
70°
46°
26
Hist. Avg.
70°
46°
27
Hist. Avg.
69°
45°
28
Hist. Avg.
69°
45°
29
Hist. Avg.
68°
44°
30
Hist. Avg.
68°
44°
1
Hist. Avg.
68°
43°
2
Hist. Avg.
67°
43°
3
Hist. Avg.
67°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Newburgh
Newburgh's September 2026 forecast shows daily high temperatures ranging from 73° to 84°, with overnight lows between 52° and 64°. The average high for September is 79° with an average low of 59°. 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 Newburgh. See also: October | November | December.