It may be April but Monday will feel like summer outside as warm breezes out ahead of a cool front push temperatures into the upper 80's throughout the region.  Monday's record high is 90 degrees, last reached in 2002 when it also reached 95 degrees as part of the heat streak.  Monday's warmth will not last for very long as a cool front crosses the region early in the hours of Tuesday, bringing a slow slip in temperatures for Tuesday and midweek.

In the wake of the frontal passage, temperatures step down from the upper 80's on Monday to the 70's on Tuesday, to around 70 on Wednesday and through the balance of the week.  The front will initially cross the region dry but there's a chance for a shower or sprinkle on Wednesday, especially south of us, as a weak wave of low pressure pushes northeast along the front as it continues to slide off the coast.  I doubt this is a factor for much of the region.

However, towards the weekend the potential for a stronger area of low pressure to impact the region exists.  There is a good deal of uncertainty over detail, track, and timing but the majority of computer guidance out there shows this storm system lifting north and northeast out of the Deep South, bringing rain and thunder to the region on Saturday and perhaps Sunday as well.  It's possible this storm system brings us the most significant rainfall we've seen in some time, which would come in handy as our rainfall percentage of normal is flirting with 50% for the year so far.   

Going into late April, more typical weather will return after this weekend's storm system.  Other than our flirtation with 90 to start the work week, no real signs of big time heat are in the offing for a while.

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Tom Thunstrom is the editor and publisher of Phillyweather.net. You can follow the site on twitter@phillywx or on  Facebook .