September 2021 was warmer than average, while precipitation totals for the month were generally above normal in most of northeast Minnesota and northwest Wisconsin.
September 2021 was a top 10 warmest September on record at Duluth, International Falls and Brainerd.
>50% of days in September 2021 were warmer than average in Duluth, Minnesota.
| Duluth, Minnesota Climate Summary for September 2021 Average temperature: 60.2 F Normal: 57.2 F Departure: +3.0 degrees above normal Warmest temperature: 85 on the 19th Lowest temperature: 39 on the 22nd 2 days had a high temperature of at least 80; normal is 2 days 17 days had a high temperature of at least 70; normal is 9 days Total precipitation: 3.60″ Normal: 3.48″ Departure: +0.12″ above normal Greatest calendar day precipitation total: 1.11″ on the 14th 11 days had at least 0.01″ of precipitation 8 days had at least 0.10″ of precipitation 4 days had at least 0.50″ of precipitation 1 day had at least 1.00″ of precipitation Total snowfall: 0.0″ Normal: 0.1″ Departure: -0.1″ below normal 5 days with thunder Note: September 2021 tied with September 1948 for 8th warmest September in station history. The warmest September on record was in 1897 with an average temperature of 62.6 degrees. |
| International Falls, Minnesota Climate Summary for September 2021 Average temperature: 59.0 F Departure: +4.8 degrees above normal Total precipitation: 3.23″ Departure: +0.23″ above normal Total snowfall: 0.0″ Normal: 0.1″ Departure: -0.1″ below normal 4 days with thunder Note: September 2021 tied with September 2015 for 6th warmest September on record in station history. The warmest September on record was in 1920 with an average temperature of 62.7 degrees. |
| Brainerd, Minnesota Climate Summary for September 2021 Average temperature: 62.3 F Departure: +3.5 degrees above normal Total precipitation: 3.29″ Departure: +0.69″ above normal Note: September 2021 tied with September 2013, 2004 and 1998 for 3rd warmest September on record in station history. The warmest September on record was set in 1931 and 2009 with an average temperature of 63.6 degrees. |
| Hibbing, Minnesota Climate Summary for September 2021 Average temperature: 56.0 F Departure: +3.0 degrees above normal Total precipitation: 3.46″ Departure: +0.40″ above normal 4 days with thunder |
| Ashland, Wisconsin Climate Summary for September 2021 Average temperature: 59.7 F Departure: +2.3 degrees above normal Total precipitation: 2.85″ Departure: -0.18″ below normal 4 days with thunder |
Climate maps for September 2021
Total precipitation for the Northland in September 2021
Duluth, MN: 3.60″
Hibbing, MN: 3.46″
Brainerd, MN: 3.29″
International Falls, MN: 3.23″
Ashland, WI: 2.85″
Percent of normal precipitation values for the Northland in September 2021
Brainerd, MN: 127% of normal
Hibbing, MN: 113% of normal
International Falls, MN: 108%
Duluth, MN: 103% of normal
Ashland, WI: 94% of normal
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