S
M
T
W
T
F
S
30
64°
59°
31
84°
52°
1
88°
63°
2
79°
57°
3
70°
57°
4
64°
54°
5
77°
52°
6
79°
46°
7
73°
50°
8
81°
55°
9
84°
58°
10
72°
51°
11
65°
51°
12
73°
45°
13
76°
51°
14
80°
55°
15
75°
53°
16
73°
52°
17
76°
54°
18
83°
56°
19
82°
56°
20
80°
54°
21
77°
49°
22
69°
47°
23
67°
49°
24
69°
54°
25
70°
51°
26
66°
49°
27
65°
44°
28
64°
43°
29
63°
44°
30
63°
45°
1
71°
43°
2
72°
45°
3
72°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Lillooet
Lillooet's September 2026 forecast shows daily high temperatures ranging from 63° to 84°, with overnight lows between 43° and 58°. The average high for September is 73° with an average low of 50°. 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 Lillooet. See also: October | November | December.
