S
M
T
W
T
F
S
30
83°
65°
31
83°
65°
1
82°
64°
2
82°
65°
3
83°
65°
4
83°
64°
5
82°
64°
6
82°
63°
7
83°
62°
8
79°
59°
9
78°
61°
10
79°
61°
11
81°
60°
12
77°
57°
13
68°
51°
14
66°
50°
15
66°
56°
16
68°
55°
17
67°
51°
18
70°
52°
19
75°
56°
20
75°
56°
21
74°
55°
22
71°
47°
23
75°
45°
24
70°
54°
25
68°
54°
26
69°
46°
27
72°
40°
28
64°
41°
29
66°
51°
30
66°
49°
1
62°
49°
2
60°
53°
3
69°
53°
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 60° to 83°, with overnight lows between 40° and 65°. The average high for September is 74° with an average low of 55°. 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.
