Unseasonably warm temperatures across the region resulted in new record highs Thursday.

A high-pressure system with warm air from the American South has led to summer-like temperatures across southwestern Ontario. In some cases, temperature records have fallen.

According to hourly readings collected by Environment Canada Thursday, a new high for April 13 was recorded in Chatham-Kent at 24.8 C. However, statistics on extreme highs and lows in Chatham-Kent only go back to 2019. The reading on this date in 2022 was 17.6 C.

In Sarnia-Lambton, temperatures reached 28.1 C at Chris Hadfield Airport at 5 p.m., breaking the mark of 22.6 C in 2006, when recordkeeping began in that area.

Across midwestern Ontario, temperature records went down as well. In Owen Sound, the high for the day was taken at 6 p.m., a 24.5 C reading at Wiarton Airport, breaking the record of 22.6 C set in 1968. At Wingham, the high was 26.2 C, shattering the mark set in 2015 at 20.5 C.

Records were not broken throughout the entire region, though. The high in Windsor-Essex was 27 degrees shortly after 4 p.m. at Windsor Airport. With a record for April 13 of 29.4 C set in 1941, that mark will be safe for another year.

In London-Middlesex, the high for the day was reached a little after 3 p.m., with 27.4 C reported at London International Airport. The record there, also from 1941, was 28.9 C.

Environment Canada meteorologist Geoff Coulson said warm temperatures will stick around Friday and Saturday then it’s back to reality.

“This is expected to continue right into Friday,” Coulson said on Wednesday. “Low-20s for Saturday, and then we finally start to see more seasonal temperatures for Sunday and into next week.”