Cool down coming

Two more warm days on tap before temperatures settle back into the 70s with lower humidity.

Today:  Mostly sunny, warm, highs in the low to mid 80s south, upper 70s along the coast, near 80 north.

Tonight:  Clear, areas of fog toward dawn, lows in the upper 50s to near 60 south, near 50 north.

Tomorrow:  Partly sunny, chance of showers and thunderstorms in the afternoon, some could be severe, highs in the mid and upper 80s south, low 80s north.

Tomorrow night:  Showers and thunderstorms taper off in the evening, becoming partly cloudy, lows in the mid 50s south, upper 40s north.

Thursday:  Lots of sunshine, cooler, highs in the mid and upper 70s south, mid and upper 60s north.

Discussion:

We are still under the influence of high pressure here in New England today.  This will allow for plenty of sunshine today and another days of warm temperatures.  As we head into tonight and tomorrow there will be a cold front approaching the region.  Ahead of this front, dew points will get a bit higher making for a humid day tomorrow, starting with patchy fog tomorrow morning.  The front will approach the region during the afternoon hours, which is prime timing for showers and thunderstorms to develop.  The orientation and motion of the front will be conducive to most areas seeing the showers and thunderstorms.  The front will be moving from northwest to southeast.  Normally cold fronts move in directly from the west or from a southwesterly direction, this typically keeps most of Southern New England free of showers and storms.  A southerly wind brings stabilizing air in from the Atlantic.  Tomorrow the winds will be more westerly ahead of the front, so the stabilizing effect won't be as prominent.  Depending on how much sunshine we see before the front arrives will determine how unstable the atmosphere will be.  So just a heads up for tomorrow, I'll elaborate more with tomorrow's update.

Beyond tomorrow, we'll have another stretch of dry weather but this time temperatures will be cooler and there will be little to no humidity.  An upper level low will settle in over the Northeast keeping conditions cooler, but we should stay mainly sunny.  This looks like it will last right into the first half of the weekend.  There could be a few showers around on Sunday, but we'll have to wait and see if that feature is still in the forecast models in the coming days.

Thanks for reading!  And remember, tomorrow is the start of hurricane season.

-Jon K.