Twin Cities surpass 100 degrees on Monday, setting new record

It officially hit 100 degrees at the Minneapolis-St. Paul International Airport on Monday. 

The National Weather Service in the Twin Cities tweeted just after 3:30 p.m. the temperature hit 100 degrees, and by 4:07 p.m. the temperature at MSP Airport was 101 degrees.

The last time the Twin Cities hit 100 degrees was on May 28, 2018. This also marks a new record high for June 20 — the previous record for this date was 98 degrees, set in 1933.

While the Twin Cities often experience a heat index well over 100 degrees many times during the summer, it's quite rare for the temperature to hit 100 degrees. The Twin Cities has only managed this five times since the mid-1990s. 

RELATED: Minnesota weather: Extreme heat peaks Monday with highs near 100

St. Cloud also hit 101 degrees, which breaks the city's old daily record high of 98 degrees that was set in 1933, the National Weather Service said. Princeton and Morris are recorded 100-degree days. For Morris, it was the second day straight where the city hit 100 degrees.

Factoring in heat index – which estimates what temps "feel like" – many cities were well over 100, with Edina leading the way at 110 degrees for heat index.

An excessive heat warning is in effect for the Twin Cities until 1 a.m. on Tuesday.

6 people treated at Hennepin County Medical Center for heat-related illnesses

Doctors in Minneapolis have treated at least six people on Monday as temperatures in the Twin Cities pushed over 100 degrees.

Hennepin County Medical Center says it has treated at least six patients for heat-related illnesses during the day.