S
M
T
W
T
F
S
30
88°
70°
31
92°
67°
1
94°
69°
2
96°
72°
3
97°
72°
4
96°
73°
5
97°
72°
6
92°
69°
7
82°
69°
8
85°
65°
9
90°
63°
10
93°
67°
11
94°
69°
12
81°
69°
13
89°
68°
14
91°
67°
15
80°
70°
16
86°
66°
17
90°
65°
18
93°
70°
19
88°
68°
20
89°
67°
21
90°
67°
22
84°
69°
23
73°
60°
24
65°
57°
25
76°
52°
26
81°
46°
27
81°
47°
28
79°
49°
29
82°
54°
30
84°
56°
1
85°
57°
2
86°
66°
3
81°
61°
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 81° to 86°, with overnight lows between 61° and 66°. The average high for September is 84° with an average low of 64°. 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.
