S
M
T
W
T
F
S
30
94°
67°
31
93°
68°
1
94°
66°
2
94°
67°
3
93°
70°
4
95°
70°
5
94°
69°
6
95°
68°
7
93°
68°
8
92°
69°
9
94°
68°
10
94°
68°
11
93°
67°
12
93°
67°
13
91°
65°
14
88°
65°
15
86°
64°
16
85°
66°
17
89°
65°
18
90°
56°
19
90°
57°
20
82°
59°
21
83°
64°
22
86°
64°
23
89°
63°
24
88°
64°
25
89°
65°
26
90°
64°
27
90°
64°
28
89°
59°
29
86°
62°
30
80°
62°
1
Hist. Avg.
83°
58°
2
Hist. Avg.
83°
57°
3
Hist. Avg.
83°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Big Lake
Big Lake's September 2026 forecast shows daily high temperatures ranging from 80° to 95°, with overnight lows between 56° and 70°. The average high for September is 90° with an average low of 65°. 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 Big Lake. See also: October | November | December.
