The dew points have been so off the wall because of the either the southeast wind or the southwest wind that has been the dominating wind here for much of the time since mid July. If you think the summer has been more humid than average..guess what? It has been. In fact this has been the most humid summers we have seen in almost 50 years.
The chart above shows how many hours the dew points at Islip have been above 70 this summer. Notice the huge spike for this summer. We seem to be running double the average of a typical summer. Much of this has been since mid July which means the humidity has been virtually unrelenting. 800 hours of dew points over 70 divided by 24 hours in a day works out to over 33 days of oppressive humidity when we look at the raw numbers. Since we had days where it was oppressive for at least part of the day, it is likely that the actual number of days is much higher. This has been the ultimate bad hair summer.
Satellite loops show us in mostly cloud free conditions and the radars are very quiet here. You would think with all the tropical air that we could manage a pop up thunderstorm or two but the atmosphere is just too stable for that. Another steamy oppressive night tonight with lows in the mid 70s will be followed by another oppressive day on Wednesday with highs reaching 90 to 95 except maybe at the beaches it will be in the "cooler" 80s. Humidity levels will remain oppressively high into Thursday before a cold front puts an end to all this.Friday and Saturday look for lots of clouds, an onshore wind and temperatures just in the 70s along with some passing showers.
NATIONAL WEATHER SERVICE SNOW FORECASTS
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