Chilly August night coming, then humidity rises and possible pattern change coming

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CHILLY NIGHT 

Reinforcing cool air filters into central Indiana late Thursday afternoon.  A weak front settles south this evening carrying the widely scattered showers and t-showers with it.

Chilly for mid August later tonight as temps well away from the city lower into the 40s! Tonight will mark the 22nd night below 60° in the city – most in a summer in 10 years – with a forecast low of 51° Friday morning we will be shy of the record 45° set in 1979.

Friday AM temperatures

Friday AM temperatures

LOST SUMMER?

In what has been a historic summer, the cool weather rolls on with 48 days since June 1st below normal.

No time on record has these past 6 weeks ever been this cool – with and average temperature since July 1st of 70.6°.

Now ranks among the coolest 12% on record

Now ranks among the coolest 12% on record

SIGNS OF HEAT

We still monitor changes in our long-range pattern with possible heat here starting next week. No doubt there will be a jump this weekend in humidity that may also bring with it scattered showers and t-showers, timing is still being refined and current thinking is Sunday has best chance for the rain.

Overnight runs long-range are still trying to sort out the potentially large pattern change. Still looks like heat will try to take hold in the east next week.

latest euro model forecast next Friday 8-22

latest euro model forecast next Friday 8-22

Possible pattern change in the works.

Possible pattern change in the works.