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(11:00AM - 9/6/20) A storm system moving through the region today will bring a low end threat for severe t'storms to Northern and portions of Central Illinois.
Summary... A complex of scattered showers and t'storms has been moving across Northern and portions of Central Illinois this morning. A few isolated strong to severe t'storms occurred with this complex earlier this morning, with damaging winds and large hail having been the main threats. This complex is will be quickly diminishing and moving out of the state by early afternoon. In the wake of this activity, some clearing and destabilization will occur. At this time it appears that additional isolated to scattered showers and t'storms will develop this afternoon along an advancing cold front, across portions of Wisconsin, Iowa and Northwest Illinois. This activity will then push east-southeast across portions of Northern Illinois, posing an isolated severe t'storm threat later this afternoon into tonight. An environment in place will feature low to moderate instability, moderate moisture, good shear and good forcing. Upwards of a minimal severe t'storm threat is expected across portions of Northern Illinois. Damaging winds, large hail and an isolated tornado will be the main threats. Below is the severe t'storm forecast for this morning - tonight. 
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(10:00PM - 9/6/20) A storm system is expected to move through the region on Sunday, bringing a low end threat for severe t'storms to Northern and portions of Central Illinois.
Summary... A complex of scattered showers and t'storms is expected to spread across Northern and portions of Central Illinois, Sunday morning into early Sunday afternoon. A marginal environment will be in place, which will support an isolated severe t'storm threat, with damaging winds and large hail being the main threats. In the wake of this activity, the amount of clearing and destabilization that occurs is in question, and thus casts doubt on the secondary potential for Sunday afternoon into Sunday night. At this time it appears possible that additional isolated to scattered showers and t'storms will develop Sunday afternoon along an advancing cold front, across portions of Wisconsin, Iowa and Northwest Illinois. This activity will then push east-southeast across portions of Northern Illinois, posing an isolated severe t'storm threat late Sunday afternoon into Sunday night. An environment in place will feature low to moderate instability, moderate moisture, good shear and good forcing. Upwards of a minimal severe t'storm threat is expected across portions of Northern Illinois, during both rounds of activity on Sunday. Damaging winds, large hail and an isolated tornado will be the main threats. Below is the severe t'storm forecast for Sunday morning - Sunday night. 
(10:45AM - 9/5/20) A storm system is expected to move through the region on Sunday, bringing a low end threat for severe t'storms to Northern and portions of Central Illinois.
Summary... A complex of scattered showers and t'storms is expected to spread across Northern and portions of Central Illinois Sunday morning. A marginal environment will be in place, which could support an isolated severe t'storm, with damaging winds and large hail being the main threats. In the wake of this activity, the amount of clearing and destabilization that occurs is in question, and thus casts doubt on the potential for Sunday afternoon into Sunday night. At this time it appears possible that additional isolated to scattered showers and t'storms are expected to develop Sunday afternoon along an advancing cold front, across portions of Wisconsin, Minnesota, Iowa and Northwest Illinois. This activity will then push southeast across Northern and portions of Central Illinois, late Sunday afternoon into Sunday night. An environment in place will feature low to moderate instability, moderate moisture, good shear and good forcing. Upwards of a minimal severe t'storm threat is expected across portions of Northern Illinois. Damaging winds, large hail and an isolated tornado will be the main threats. Below is the severe t'storm forecast for Sunday morning - Sunday night. 
(9:45PM - 9/4/20) A storm system is expected to move through the region on Sunday, bringing a low end threat for severe t'storms to Northern Illinois.
Summary... A complex of scattered showers and t'storms is expected to spread across Northern and portions of Central Illinois Sunday morning. In the wake of this activity, some clearing and destabilization will occur. Additional scattered showers and t'storms are expected to develop Sunday afternoon along an advancing cold front, across portions of Wisconsin, Minnesota, Iowa and Northwest Illinois. This activity will then push southeast across Northern and portions of Central Illinois, late Sunday afternoon into Sunday night. An environment in place will feature low to moderate instability, moderate moisture, good shear and good forcing. Upwards of a minimal severe t'storm threat is expected across portions of Northern Illinois. Damaging winds, large hail and an isolated tornado will be the main threats. Below is the severe t'storm forecast for Sunday morning - Sunday night. 
(3:30PM - 9/1/2020) Summer 2020 ended up as the hottest summer on record for Chicago, with an average temperature of 76.7 degrees. Summer is considered June 1st - August 31st. The average temperature takes into account high and low temperatures from each summer month (June/July/August), which is averaged out to get the overall summer average temperature.
In addition to the summer record...June 2020 finished tied for the 6th warmest June on record, July 2020 finished as the 4th warmest July on record, and August 2020 finished tied for the 6th warmest August on record. There were 30 days which featured a high temperature of 90 degrees of higher (31 total this year), with the highest temperature of the summer being 97 degrees on August 24th. While there were many hot days, including a few heat waves, extreme heat was fairly limited overall...with the record for this summer being mostly attributed to consistently warm temperatures, both day and night. Looking into a comparison of this summer compared to the other summers on the top 5 list...Most of the other summers featured more extreme heat, including days with temperatures into the 100's. What occurred this summer shows that a summer with consistent warmth and some heat can be just as significant statistically as a summer that has more significant bouts of extreme heat.
(Side note: Some will notice that 1988 did not feature a top 5 hottest summer. Summer 1988 featured several bouts of extreme heat, including numerous days with high temperatures into the 100's. However, there were also several bouts of cooler (Even below average) temperatures throughout the summer. Additionally, a significant drought was in place, with moisture and high humidity lacking. This aided in cool overnight low temperatures, well below average at times, which skewed the overall average summer temperature much lower than it could have been. 
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