S
M
T
W
T
F
S
30
77°
59°
31
80°
63°
1
80°
55°
2
81°
56°
3
74°
55°
4
75°
57°
5
76°
62°
6
79°
59°
7
80°
55°
8
73°
58°
9
73°
61°
10
75°
60°
11
77°
60°
12
76°
59°
13
71°
59°
14
71°
53°
15
73°
52°
16
70°
52°
17
70°
55°
18
71°
55°
19
75°
56°
20
70°
58°
21
73°
56°
22
72°
49°
23
71°
54°
24
68°
57°
25
73°
53°
26
66°
52°
27
72°
55°
28
71°
53°
29
66°
54°
30
Hist. Avg.
66°
50°
1
Hist. Avg.
66°
49°
2
Hist. Avg.
65°
49°
3
Hist. Avg.
65°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Cataumet
Cataumet's September 2026 forecast shows daily high temperatures ranging from 66° to 81°, with overnight lows between 49° and 63°. The average high for September is 74° with an average low of 56°. 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 Cataumet. See also: October | November | December.