S
M
T
W
T
F
S
30
66°
53°
31
65°
51°
1
65°
52°
2
66°
54°
3
64°
50°
4
65°
49°
5
64°
51°
6
65°
50°
7
67°
51°
8
68°
55°
9
68°
53°
10
63°
54°
11
66°
55°
12
64°
53°
13
67°
54°
14
67°
54°
15
66°
52°
16
66°
50°
17
62°
53°
18
61°
51°
19
65°
47°
20
62°
47°
21
61°
46°
22
61°
48°
23
60°
49°
24
61°
51°
25
60°
53°
26
60°
52°
27
64°
51°
28
62°
49°
29
59°
48°
30
59°
46°
1
60°
46°
2
58°
45°
3
58°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Butterwick
Butterwick's September 2026 forecast shows daily high temperatures ranging from 58° to 68°, with overnight lows between 45° and 55°. The average high for September is 63° with an average low of 51°. 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 Butterwick. See also: October | November | December.