S
M
T
W
T
F
S
30
79°
43°
31
73°
41°
1
71°
41°
2
75°
42°
3
76°
43°
4
76°
45°
5
75°
41°
6
66°
38°
7
63°
39°
8
64°
45°
9
63°
45°
10
64°
40°
11
62°
36°
12
62°
40°
13
63°
42°
14
61°
41°
15
61°
36°
16
60°
35°
17
61°
38°
18
65°
36°
19
69°
34°
20
60°
38°
21
60°
33°
22
57°
32°
23
57°
37°
24
58°
36°
25
57°
33°
26
56°
33°
27
56°
34°
28
57°
36°
29
57°
36°
30
58°
35°
1
62°
36°
2
63°
35°
3
62°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in 100 Mile House
100 Mile House's September 2026 forecast shows daily high temperatures ranging from 56° to 79°, with overnight lows between 32° and 45°. The average high for September is 64° with an average low of 38°. 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 100 Mile House. See also: October | November | December.
