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°
49°
12
71°
45°
13
67°
62°
14
71°
48°
15
68°
42°
16
79°
53°
17
76°
64°
18
78°
50°
19
65°
48°
20
63°
52°
21
67°
48°
22
60°
47°
23
62°
48°
24
62°
52°
25
64°
48°
26
65°
49°
27
66°
48°
28
69°
49°
29
70°
51°
30
68°
51°
1
70°
47°
2
72°
51°
3
64°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Lynnfield
Lynnfield's September 2026 forecast shows daily high temperatures ranging from 60° to 78°, with overnight lows between 47° and 52°. The average high for September is 67° with an average low of 49°. 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 Lynnfield. See also: October | November | December.
