Weather summary: The last time we had below normal temperatures for a month was June 2011. We have seen above average temperatures in the Boston area every month since. So far in June 2012 we have only had three days with above normal readings, as this month has been trending cooler than normal. That is about to change as we get ready for some intense heat Wednesday and Thursday, with Friday also remaining well above normal.
Tuesday was the day of transition as we go from the cooler temperatures of this past weekend and Monday to the sizzling heat coming mid week. Temperatures on Tuesday finally got back to normal levels, with highs climbing into the mid and upper 70s. Skies were generally partly sunny on Tuesday.
Weather synopsis: The pesky east wind of the past several days, responsible for the below normal temperatures, is gone and now being replaced with a southerly airflow. Heat in the Midwest and Plains States will spill into New England Wednesday. We could be in for some record setting heat during Wednesday and Thursday. Not only will it get very hot but the humidity will increase and add to the discomfort. Heat indices will rise over the century mark with the combination of high temperatures and high humidity.
The high pressure ridge over the East Coast will slowly give way to an approaching cold front later Thursday night and Friday. The front will likely set off a few showers and thunderstorms as it crosses the area during Friday.
High pressure will follow for Saturday, with sunny skies, cooler temperatures and noticeably drier air. The temperature range should be near normal.
Then on Sunday we run a risk of showers as a disturbance moves close to southern New England. Timing and confidence is still shaky on the Sunday outlook. It looks to be cooler as well.
The National Weather Service has issued a Heat Advisory for Wednesday: http://www.erh.noaa.gov/box/hazardsByCounty.php
5 DAY FORECAST:
Wednesday through Thursday: Partly to mostly sunny, hot and humid days. A few clouds, warm and humid at night. High temperatures in the mid 90s, except around 90 degrees Cape Ann. Overnight lows around 75 degrees. Winds west 5 to 12 mph.
Thursday night: Increasing cloudiness, warm and humid. Lows around 75. Winds west less than 10 mph.
Friday: Partly cloudy, chance of showers and thunderstorms. Highs in the mid to upper 80s.
Friday night: Chance of an evening shower or thunderstorm, followed by partly cloudy skies overnight. Not as warm, with lows in the low to mid 60s.
Saturday: Partly to mostly sunny and seasonably mild. High temperatures in the upper 70s to low 80s.
Saturday night: Partly cloudy, with lows around 60.
Sunday: Partly cloudy, with a chance of late day showers. Cooler, with highs around 75.
You can follow temperatures, winds and radar in real time at this link: http://www.wunderground.com/wundermap/