S
M
T
W
T
F
S
30
84°
59°
31
74°
56°
1
68°
60°
2
71°
61°
3
75°
63°
4
83°
64°
5
71°
59°
6
71°
54°
7
80°
53°
8
78°
55°
9
73°
52°
10
86°
69°
11
77°
54°
12
72°
63°
13
71°
65°
14
74°
55°
15
68°
58°
16
77°
61°
17
78°
58°
18
72°
53°
19
68°
52°
20
67°
50°
21
67°
50°
22
68°
49°
23
68°
52°
24
71°
50°
25
63°
46°
26
63°
49°
27
64°
52°
28
67°
51°
29
62°
50°
30
62°
50°
1
63°
53°
2
67°
52°
3
66°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Lynn
Lynn's September 2026 forecast shows daily high temperatures ranging from 62° to 78°, with overnight lows between 46° and 65°. The average high for September is 68° with an average low of 53°. 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 Lynn. See also: October | November | December.
