Average September Temperatures for Minnesota

Average temperatures for September at cities, towns, parks and lakes throughout Minnesota are listed below in degrees Fahrenheit and Celsius.

You can jump to a separate table for each region of the state: Southern, Northeastern and Northwestern Minnesota.

The tables give the normals for maximum and minimum temperatures based on weather data collected from 1991 to 2020 by the US National Centers for Environmental Information.

Southern Minnesota

Average September temperatures
High °F	Low °F	Place	High °C	Low °C
73	51	Albert Lea	23	11
73	50	Faribault	23	10
74	50	Mankato	23	10
73	54	Minneapolis	23	12
73	50	Pipestone	23	10
74	50	Redwood Falls	24	10
72	50	Rochester	22	10
71	52	St. Paul	22	11
73	54	Winona	23	12
73	49	Worthington	23	10

Northeastern Minnesota

Average daily temperatures in September
High °F	Low °F	Place	High °C	Low °C
69	48	Big Sandy Lake Dam	20	9
67	47	Duluth	20	9
62	47	Grand Marais	17	9
65	44	Grand Portage	18	7
68	45	Grand Rapids	20	7
64	45	Gunflint Lake	18	7
66	40	Hibbing	19	5
66	42	International Falls	19	6
67	49	Two Harbors	19	9
72	47	Wild River State Park	22	8

Northwestern Minnesota

September temperatures: daily averages
High °F	Low °F	Place	High °C	Low °C
70	48	Agassiz Wildlife Refuge	21	9
70	50	Alexandria	21	10
70	46	Brainerd	21	8
70	46	Detroit Lakes	21	8
71	49	Fergus Falls	22	9
69	49	Mille Lacs Lake	20	9
72	49	Moorhead	22	9
71	48	St. Cloud	22	9
66	43	Warroad	19	6
69	43	Waskish	20	6

Average Temperatures for Minnesota in September

Southern Minnesota

Northeastern Minnesota

Northwestern Minnesota

Reference

More Minnesota Weather Information