September 2020 was cooler and drier than average across the Northland. Average temperatures for the month were 1 to nearly 3 degrees below normal, while precipitation totals for the month were 1 to 3 inches below normal.
| September 2020 Climate Summary for Duluth, Minnesota Average temperature: 54.6 degrees Normal: 55.6 degrees Departure: -1.0 degree below normal Highest temperature: 81 F on the 23rd and 22nd Lowest temperature: 28 F on the 18th 9 days had a high temperature of at least 70 degrees, normal is 9 days 2 days had a high temperature of at least 80 degrees, normal is 2 days 1 day had a low temperature of 32 degrees or colder, normal is 1 day Total precipitation: 0.85″ Normal: 4.11″ Departure: -3.26″ below normal Greatest calendar day precipitation total: 0.27″ on the 1st 10 days had at least 0.01″ of precipitation 3 days had at least 0.10″ of precipitation Total snowfall: 0.0″ Normal: 0.1″ Departure: -0.1″ below normal 5 days with thunder Note: September 2020 was the 7th driest September in station history. |
Accumulated Precipitation graph for Duluth, Minnesota for September 2020.
Blue line=Wettest September on record
Red line=Driest September on record
Brown line=Normal
Green line=2020 accumulation
Source: https://w2.weather.gov/
Only 1 quarter inch or greater precipitation event in Duluth in all of September 2020, and that came on the 1st, over 4 weeks ago!
Source: https://mesonet.agron.iastate.edu/
15/30 or 50% of days in September had a below average temperature (blue)
13/30 or 43% of days in September had an above average temperature (red)
2/30 or 7% of days in September had a normal temperature
September 2020 Daily Average Temperature Departure for Duluth, Minnesota.
| September 2020 Climate Summary for International Falls, Minnesota Average temperature: 52.6 degrees Departure: -1.0 degree below normal Total precipitation: 1.81″ Departure: -1.18″ below normal 4 days with thunder |
| September 2020 Climate Summary for Brainerd, Minnesota Average temperature: 56.2 degrees Departure: -1.9 degrees below normal Total precipitation: 0.91″ Departure: -2.27″ below normal 1 day with thunder |
| September 2020 Climate Summary for Hibbing, Minnesota Average temperature: 50.3 degrees Departure: -2.8 degrees below normal Total precipitation: 1.26″ Departure: -1.81″ below normal 4 days with thunder Note: September 2020 tied with September 2010 for the 6th coldest September in station history. |
| September 2020 Climate Summary for Ashland, Wisconsin Average temperature: 55.1 degrees Departure: -1.6 degrees below normal Total precipitation: 1.51″ Departure: -2.34″ below normal 2 days with thunder |
Source: https://mrcc.illinois.edu/
Tim
