Thursday looks to be the hottest day of the year, so far, with a projected heat index around 97* in Waterloo. The blast of pre-summer warmth has prompted a HEAT ADVISORY for the Northwest corner of the state. (below)

In the first nine days of June in Waterloo, the high temperature has been over 90* five times. In June of 2020, it surpassed 90* A TOTAL of five times.

Wednesday, June 9, it reached 94* for the hottest day of the year so far, with a heat index of 95* in the Cedar Valley.

Will records be broken in Waterloo today? Not even close. The record for June 10th in Waterloo is a whopping 101* set in 1933.

The average temperature this month (through June 9) has been 75.6*, which would place it as the fourth warmest June ever in Waterloo -- but there's still a lot of June remaining. Summer hasn't even officially started yet! (June 20)

The average high temperature in June for Waterloo is 81* and the average high SO FAR this month is 89*! Yeah, it's been hot.

11 counties in Northwest Iowa are in a HEAT ADVISORY on Thursday where the heat index is expected to surpass triple digits this afternoon.

Thursday's predicted head index readings from the National Weather Service:

It has been nearly 300 days since the National Weather Service in Des Moines has issued a heat advisory for its coverage area (as of June 10):

Iowa Environmental Mesonet
Iowa Environmental Mesonet

In 2020, a total of 25 Heat Advisories were issued across Iowa. 16 of those occurred in  July.

FYI: In 2020, Waterloo had 29 days reach at least 90*.

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