At 10:30 this morning, the temperature in Philadelphia was 66, breaking the previous high for this date set in 1884.

By just before noon, it was 67 at Philadelphia International Airport - and 70 at Northeast Airport.

Thermometers could nudge a little higher still, before thunderstorms rear their ugly, gusty heads - possibly pelting some places with hail - this afternoon and evening.

According to a National Weather Service statement, "if thunderstorms do develop, some could turn severe fairly quickly with damaging winds the main threat. The thunderstorms may organize into a line well to our west this afternoon and then quickly move eastward through the evening. Some hail and locally heavy rainfall is also possible."

Other places have already broken records, too.

Atlantic City was up to 70, exceeding the 63 set in 1965.

Trenton's 71 clobbers 1938's 64.

Wilmington's 68 tops '38's 63.

Things are cooler to the west and north, however.

Reading was "only" 54 around noon, still well short of the 65 of 1938.

The Shore warmed up early today, with Wildwood reporting a 61 before 7 a.m.

Tomorrow's weather in Philadelphia should be more normal: partly cloudy with a high near 50.

Then temperature ranges decline, even bringing a chance of morning snow on Sunday.

Yes, snow.

Don't put those shovels away just yet.

The oldest records? A couple go back to 1872. That's when the low of 5 was set for March 5 and 2.11 inches of rain fell on Oct. 26.

Think it wasn't so hot back then? The oldest high goes back to 1874, when 75 was reached on Feb. 23.

To see the list of Philadelphia weather records, go to http://www.erh.noaa.gov/phi/climate/recsAndNormals/xml/KPHL_recsAndNorms.xml.

For more on the forecast, go to http://go.philly.com/weather.