S
M
T
W
T
F
S
30
93°
72°
31
93°
71°
1
97°
70°
2
99°
76°
3
98°
79°
4
96°
71°
5
97°
71°
6
95°
71°
7
97°
74°
8
97°
67°
9
89°
61°
10
87°
64°
11
86°
63°
12
91°
65°
13
93°
68°
14
83°
58°
15
87°
61°
16
89°
58°
17
77°
53°
18
79°
56°
19
81°
58°
20
78°
58°
21
70°
57°
22
80°
57°
23
80°
56°
24
79°
57°
25
80°
52°
26
67°
44°
27
67°
47°
28
66°
44°
29
68°
51°
30
68°
46°
1
70°
52°
2
65°
46°
3
63°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Seward
Seward's September 2026 forecast shows daily high temperatures ranging from 63° to 97°, with overnight lows between 42° and 74°. The average high for September is 81° with an average low of 58°. 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 Seward. See also: October | November | December.
