S
M
T
W
T
F
S
30
87°
66°
31
86°
65°
1
86°
68°
2
87°
65°
3
89°
69°
4
90°
66°
5
90°
69°
6
89°
66°
7
87°
68°
8
89°
68°
9
88°
67°
10
83°
67°
11
87°
66°
12
88°
67°
13
88°
66°
14
87°
66°
15
87°
67°
16
86°
66°
17
87°
65°
18
86°
64°
19
85°
64°
20
85°
59°
21
81°
63°
22
80°
64°
23
84°
62°
24
84°
62°
25
83°
60°
26
84°
60°
27
83°
61°
28
83°
61°
29
82°
60°
30
83°
60°
1
81°
58°
2
83°
60°
3
77°
58°
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 77° to 90°, with overnight lows between 58° and 69°. The average high for September is 85° with an average low of 64°. 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.
