S
M
T
W
T
F
S
30
75°
47°
31
75°
46°
1
74°
47°
2
74°
48°
3
75°
54°
4
76°
54°
5
82°
51°
6
77°
49°
7
82°
53°
8
81°
54°
9
82°
50°
10
82°
43°
11
72°
42°
12
69°
41°
13
69°
42°
14
67°
41°
15
67°
40°
16
69°
41°
17
68°
43°
18
72°
43°
19
79°
40°
20
69°
39°
21
67°
38°
22
65°
39°
23
65°
40°
24
Hist. Avg.
73°
46°
25
Hist. Avg.
72°
46°
26
Hist. Avg.
72°
46°
27
Hist. Avg.
71°
45°
28
Hist. Avg.
71°
45°
29
Hist. Avg.
70°
44°
30
Hist. Avg.
70°
44°
1
Hist. Avg.
69°
44°
2
Hist. Avg.
68°
43°
3
Hist. Avg.
68°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in McLaughlin
McLaughlin's September 2026 forecast shows daily high temperatures ranging from 65° to 82°, with overnight lows between 38° and 54°. The average high for September is 73° with an average low of 45°. 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 McLaughlin. See also: October | November | December.