Salt Lake City's spring "heat wave" broke a 54-year temperature record Wednesday at the Salt Lake International Airport, and toppled another 53-year-old record early Thursday.

Meteorologist William J. Alder said the previous record high for April 13 79 degrees, set in 1934 was surpassed, as forecast, by 1 degree Wednesday.At 6 a.m. Thursday the thermometer recorded the day's low at 55 at the airport, surpassing the previous April 14 high low record, 54, set in 1935.

While northern Utahns basked in sunshine Wednesday, some parts of southern Utah enjoyed a respite from high temperatures with light showers and some wind.

Alder said shower activity is forecast for southern Utah Thursday and Friday, but the weather is expected to improve Saturday. Clouds and light showers are expected in northern Utah Thursday and Friday, but sunshine will return by the weekend.