S
M
T
W
T
F
S
30
88°
68°
31
94°
68°
1
92°
63°
2
89°
66°
3
89°
72°
4
87°
68°
5
87°
67°
6
83°
69°
7
86°
68°
8
84°
66°
9
82°
61°
10
82°
56°
11
88°
62°
12
76°
57°
13
72°
53°
14
61°
50°
15
73°
54°
16
76°
50°
17
73°
58°
18
63°
59°
19
62°
58°
20
66°
55°
21
62°
50°
22
66°
49°
23
69°
49°
24
68°
58°
25
70°
58°
26
63°
56°
27
67°
55°
28
70°
59°
29
67°
54°
30
70°
51°
1
71°
49°
2
68°
50°
3
66°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Mendota Heights
Mendota Heights's September 2026 forecast shows daily high temperatures ranging from 63° to 71°, with overnight lows between 46° and 59°. The average high for September is 68° with an average low of 54°. 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 Mendota Heights. See also: October | November | December.
