S
M
T
W
T
F
S
30
88°
63°
31
87°
61°
1
81°
64°
2
83°
64°
3
81°
58°
4
80°
58°
5
80°
62°
6
83°
63°
7
86°
62°
8
83°
61°
9
80°
62°
10
85°
58°
11
79°
55°
12
78°
55°
13
77°
59°
14
82°
60°
15
83°
61°
16
83°
60°
17
82°
60°
18
82°
58°
19
79°
51°
20
74°
52°
21
74°
52°
22
75°
56°
23
78°
57°
24
79°
58°
25
80°
54°
26
79°
49°
27
74°
50°
28
72°
49°
29
71°
49°
30
72°
53°
1
71°
56°
2
Hist. Avg.
78°
52°
3
Hist. Avg.
77°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Upton
Upton's September 2026 forecast shows daily high temperatures ranging from 71° to 88°, with overnight lows between 49° and 64°. The average high for September is 79° with an average low of 57°. 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 Upton. See also: October | November | December.
