Thur-Sun, June 17-20th Heat Wave Update #1

(11:30PM - 6/18/20) A period of hot and humid conditions has settled into portions of the region, and will affect portions of the state through Sunday.

Summary....
A strong ridge has been in place across the Southwestern US for the past several days, leading to very hot and record temperatures out that way. An extension of this ridge is briefly extending into the Plains for this period of time, which is allowing hot and humid conditions to affect portions of Central and Southern Illinois through Sunday.

Forecast For Next Two Days...
Saturday, June 19th Forecast...
High temperatures will range from the low to upper 90's across Southwest and Southern Illinois, with low temperatures ranging from the mid 60's to upper 70's. Peak heat index values will be in the mid 90's to low 100's.

Elsewhere the heat will be tempered, with high temps expected to be in the mid 80's to low 90's across the rest of the state.

Sunday, June 20th Forecast...
High temperatures will range from the low to upper 90's across Southwest Illinois, with low temperatures ranging from the mid 60's to mid 70's. Peak heat index values will be in the mid 90's to low 100's.

Elsewhere the heat will be tempered, with high temps expected to be in the mid 80's to low 90's across the rest of the state.

Recap Summary...
Thursday, June 17th Recap...
High temperatures topped out in the low to mid 90's across Western and Southwestern Illinois, and low temps in the low to upper 60's. Peak heat index values were in the low to upper 90's.

​Elsewhere across the state, high temps were in the mid 80's to low 90's.

Friday, June 18th Recap...
High temperatures topped out in the mid to upper 90's across Central and Southern Illinois, and low temps in the low 70's to low 80's. Peak heat index values were in the upper 90's to mid 100's.

​Elsewhere across the state, high temps were in the upper 80's to low 90's.

JP