S
M
T
W
T
F
S
30
67°
51°
31
66°
51°
1
66°
53°
2
67°
52°
3
66°
50°
4
65°
49°
5
65°
50°
6
67°
48°
7
66°
52°
8
68°
49°
9
68°
49°
10
67°
51°
11
65°
52°
12
64°
49°
13
67°
50°
14
67°
47°
15
64°
46°
16
62°
51°
17
65°
51°
18
67°
49°
19
65°
52°
20
66°
52°
21
66°
51°
22
64°
52°
23
64°
49°
24
65°
50°
25
63°
50°
26
62°
49°
27
63°
50°
28
64°
49°
29
64°
48°
30
59°
44°
1
60°
50°
2
62°
46°
3
Hist. Avg.
58°
48°
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 59° to 68°, with overnight lows between 44° and 53°. The average high for September is 65° with an average low of 50°. 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.
