S
M
T
W
T
F
S
30
85°
60°
31
86°
67°
1
85°
71°
2
91°
72°
3
91°
69°
4
81°
68°
5
76°
64°
6
77°
57°
7
79°
55°
8
82°
57°
9
85°
68°
10
79°
69°
11
80°
65°
12
83°
63°
13
83°
66°
14
70°
53°
15
81°
51°
16
85°
64°
17
83°
68°
18
76°
59°
19
75°
58°
20
73°
65°
21
N/A
22
62°
55°
23
60°
50°
24
66°
43°
25
68°
45°
26
69°
46°
27
72°
52°
28
65°
50°
29
68°
51°
30
68°
51°
1
67°
53°
2
66°
48°
3
65°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Jewett
Jewett's September 2026 forecast shows daily high temperatures ranging from 60° to 72°, with overnight lows between 43° and 56°. The average high for September is 66° 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 Jewett. See also: October | November | December.