S
M
T
W
T
F
S
30
81°
50°
31
77°
45°
1
73°
49°
2
70°
58°
3
67°
60°
4
82°
56°
5
73°
53°
6
74°
47°
7
82°
43°
8
80°
49°
9
68°
49°
10
85°
59°
11
74°
42°
12
73°
36°
13
66°
48°
14
71°
39°
15
69°
46°
16
78°
54°
17
74°
60°
18
77°
41°
19
68°
52°
20
65°
46°
21
67°
45°
22
64°
44°
23
67°
48°
24
69°
46°
25
70°
45°
26
67°
47°
27
62°
48°
28
71°
48°
29
71°
47°
30
62°
44°
1
62°
46°
2
63°
46°
3
69°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Lyman
Lyman's September 2026 forecast shows daily high temperatures ranging from 62° to 78°, with overnight lows between 39° and 60°. The average high for September is 68° with an average low of 47°. 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 Lyman. See also: October | November | December.
