S
M
T
W
T
F
S
30
71°
42°
31
82°
37°
1
88°
45°
2
66°
46°
3
66°
45°
4
68°
49°
5
75°
49°
6
69°
54°
7
60°
47°
8
65°
40°
9
76°
45°
10
82°
51°
11
67°
43°
12
65°
46°
13
54°
40°
14
65°
39°
15
70°
40°
16
69°
42°
17
70°
44°
18
73°
45°
19
76°
44°
20
76°
45°
21
71°
40°
22
68°
45°
23
66°
41°
24
71°
44°
25
74°
45°
26
74°
44°
27
64°
44°
28
60°
34°
29
58°
31°
30
58°
32°
1
59°
32°
2
62°
35°
3
67°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Lolo
Lolo's September 2026 forecast shows daily high temperatures ranging from 54° to 82°, with overnight lows between 31° and 51°. The average high for September is 68° with an average low of 41°. 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 Lolo. See also: October | November | December.