September 2020 Climate Summary

Regional Outbreaks of Severe Weather Through Early Next Week; Early Season Heat Wave across the South

Active spring pattern across the center of our nation with several episodes of severe weather and heavy rainfall expected into next week. The potential for very large hail, long track tornadoes, severe wind gusts, frequent cloud to ground lightning strikes and flash flooding are in the outlook. Furthermore, dangerous early season heat wave continues for the Gulf Coast states into early next week. Read More >

Public Information Statement National Weather Service Chicago IL 1118 AM CDT Thu Oct 1 2020 /1218 PM EDT Thu Oct 1 2020/ ...A Look Back at the Climate for the Month of September 2020 for Chicago and Rockford... At Chicago, the average high temperature was 74.6 degrees, which is 0.2 degrees below normal. The average low temperature was 57.9 degrees, which is 3.6 degrees above normal. The average temperature for the month was 66.3 degrees, which is 1.7 degrees above normal. During the month of September, 3.18 inches of precipitation were recorded, which is 0.03 of an inch below normal. There were no daily or monthly records set for Chicago during the month of September 2020. At Rockford, the average high temperature was 73.7 degrees, which is 1.7 degrees below normal. The average low temperature was 52.8 degrees, which is 0.4 degrees above normal. The average temperature for the month was 63.3 degrees, which is 0.6 degrees below normal. During the month of September, 6.61 inches of precipitation were recorded, which is 3.26 inches above normal. There were 3 daily records for Rockford during the month of September 2020: * Record daily precipitation of 2.06 inches on the 8th. * Tied record daily lowest maximum temperature of 58 degrees on the 8th. * Record daily lowest maximum temperature of 58 degrees on the 9th. There were no monthly records set for Rockford during the month of September 2020. $$