S
M
T
W
T
F
S
30
75°
46°
31
77°
48°
1
78°
48°
2
80°
43°
3
74°
40°
4
74°
40°
5
75°
44°
6
77°
46°
7
81°
46°
8
79°
44°
9
76°
45°
10
78°
41°
11
76°
40°
12
77°
43°
13
76°
44°
14
77°
36°
15
73°
40°
16
75°
40°
17
72°
39°
18
70°
40°
19
67°
38°
20
68°
36°
21
69°
33°
22
69°
37°
23
74°
35°
24
70°
38°
25
74°
39°
26
74°
39°
27
75°
38°
28
73°
27°
29
65°
30°
30
65°
37°
1
72°
38°
2
73°
39°
3
74°
36°
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 65° to 81°, with overnight lows between 27° and 48°. The average high for September is 74° with an average low of 40°. 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.
