S
M
T
W
T
F
S
30
87°
66°
31
82°
68°
1
80°
68°
2
81°
69°
3
86°
69°
4
86°
70°
5
85°
69°
6
85°
68°
7
86°
68°
8
83°
65°
9
81°
62°
10
79°
61°
11
78°
63°
12
83°
60°
13
82°
67°
14
84°
62°
15
78°
60°
16
76°
62°
17
77°
61°
18
80°
64°
19
82°
61°
20
82°
65°
21
81°
65°
22
83°
60°
23
80°
58°
24
77°
58°
25
76°
57°
26
76°
63°
27
80°
62°
28
80°
63°
29
81°
61°
30
79°
56°
1
74°
62°
2
79°
62°
3
79°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Jamestown District
Jamestown District's September 2026 forecast shows daily high temperatures ranging from 74° to 87°, with overnight lows between 56° and 70°. The average high for September is 81° with an average low of 63°. 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 Jamestown District. See also: October | November | December.