What is the weather today? Heat forecast in Philadelphia

Heads up, Philly. Those fresh spring temps are turning up the heat this week, with highs near the 90 degrees marker.

Here's what you need to know about the potentially record-setting heat this week.

What is the weather today. Heat forecast in Philadelphia

Today will be hot in Philadelphia with chances of thunderstorms.

The National Weather Service is predicting a high near 87 in the city today, with a chance of thunderstorms before 10 p.m. before forecasts shift to rain showers.

The low today will sit around 65 degrees.

Heat this week in Philadelphia

Wednesday's high is forecasted around 91 degrees, according to the NWS, with a low at 68 and more slight chances of showers Wednesday evening.

On Thursday, Philly can anticipate a high around 91 degrees and another low of 68 with slight shower chances in the evening.

Showers are forecasted during the day on Friday, with a dip in temperature to 83 degrees.

Heat records in Philadelphia this week

Hot temps could come close to breaking season records in Philadelphia, the NWS says.

In Philadelphia, the record warmest low temperature for April 14 was 62 degrees in 2014; and later in the week, forecasted highs in the 90–91-degree range could chip away at records set as early as 1941.

The NWS said Wednesday's highs and Thursday's lows are the most likely records to fall.

What is a heat wave?

The NWS defines a heat wave as a period, usually lasting longer than two days, of abnormally hot weather.

Regionally, forecasters and meteorologists consider a heatwave to be three consecutive days at at least 90 degress.

Spring weather 2026. What is the forecast for spring in Philadelphia?

The 2026 Old Farmer's Almanac predicted a warm and dry spring for the Philadelphia area, which seems to be right on cue.

In the Atlantic corridor, the Almanac predicted warmer than usual temperatures with rainfall that will sink below normal in April and be back to average by May.

Kaitlyn McCormick is a Philadelphia-based reporter writing all things trending, breaking and city-related for USA TODAY's Philadelphia Metro Connect Team.