S
M
T
W
T
F
S
30
77°
63°
31
80°
65°
1
82°
65°
2
82°
64°
3
81°
58°
4
81°
57°
5
74°
58°
6
75°
63°
7
75°
63°
8
80°
62°
9
79°
61°
10
77°
62°
11
79°
61°
12
79°
61°
13
78°
62°
14
78°
62°
15
79°
61°
16
79°
58°
17
77°
61°
18
75°
57°
19
76°
54°
20
71°
52°
21
69°
51°
22
69°
57°
23
70°
55°
24
74°
51°
25
68°
50°
26
67°
50°
27
69°
53°
28
73°
56°
29
72°
53°
30
72°
51°
1
67°
54°
2
67°
48°
3
65°
53°
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 65° to 82°, with overnight lows between 48° and 65°. The average high for September is 75° 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.
