Heat prologue

Labor Day weekend was very hot for the middle of the country, but it took a little bit of ramping up. It wasn’t very warm yet when we forecast for Danville. The temperatures were on the rise, though, finishing at 86 on the 2nd, better than the 55 we observed to start the forecast on the 31st. Victoria-Weather took the W for Danville.
Actuals: September 1st, High 82, Low 54
September 2d, High 86, Low 54

Grade: C

Danville, Illinois

Danville is south of Chicago and snuggled up next to Indiana. The whole region is consumed by corn fields.

At 959PM, CT, Danville was reporting a temperature of 55 degrees with fair skies. Dew points were in the low 50s as well, and thanks to the looming harvest, the air around Danville was a bit moister, and will be prone to fog on clear nights such as today. High pressure is currently in place, while Idalia in the Carolinas had started to pull some cooler moisture from Canada towards the low, bringing some cooler air to Danville.
Temperatures will remain a bit suppressed while a wave moves just north of the Canadian border. Even though the system is bringing severe weather to the northern High Plains tonight, it will leave northern Illinois dry. After this feature shifts on, temperatures in Danville will really start to climb, just in time for the holiday weekend.
Tomorrow – Mostly sunny, High 79, Low 50
Friday – Sunny and warmer, High 85, Low 50

TWC: Tomorrow – Mainly sunny High 77, Low 49
Friday – Sunny skies High 83, Low 52

AW: Tomorrow – Plenty of sunshine; a nice end to August High 78, Low 49
Friday – Nice with plenty of sunshine High 85, Low 51

NWS: Tomorrow – Sunny High 78, Low 49
Friday – Sunny High 83, Low 51

WB: Tomorrow – Sunny High 76, Low 50
Friday – Sunny High 83, Low 53

WN: Tomorrow – Sunny High 78, Low 49
Friday – Sunny High 83, Low 52

CLI: Tomorrow – Clear, High 77, Low 50
Friday – Sunny, High 82, Low 52

The GFS was much warmer than all other models for Danville, and nearly every outlett abandoned that guidance. The warmth is coming, just a matter of when. Here is the satellite, with Idalia in the southeast corner.