S
M
T
W
T
F
S
30
66°
48°
31
70°
48°
1
70°
47°
2
69°
47°
3
69°
48°
4
70°
48°
5
70°
43°
6
64°
45°
7
67°
45°
8
60°
43°
9
62°
45°
10
64°
40°
11
58°
35°
12
56°
34°
13
55°
35°
14
56°
33°
15
56°
35°
16
57°
33°
17
57°
36°
18
56°
39°
19
Hist. Avg.
59°
33°
20
Hist. Avg.
58°
32°
21
Hist. Avg.
58°
32°
22
Hist. Avg.
58°
32°
23
Hist. Avg.
58°
32°
24
Hist. Avg.
57°
31°
25
Hist. Avg.
57°
31°
26
Hist. Avg.
57°
31°
27
Hist. Avg.
57°
31°
28
Hist. Avg.
56°
30°
29
Hist. Avg.
56°
30°
30
Hist. Avg.
56°
30°
1
Hist. Avg.
55°
30°
2
Hist. Avg.
55°
29°
3
Hist. Avg.
55°
29°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in McLennan
McLennan's September 2026 forecast shows daily high temperatures ranging from 55° to 70°, with overnight lows between 33° and 48°. The average high for September is 63° 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 McLennan. See also: October | November | December.
