While JFK and LaGuardia made it up to 70 degrees yesterday, the temperature only climbed to a lousy 68 degrees in Central Park. That one cool day crushed any chance of this becoming the warmest July ever recorded. The title still belongs to July 1999 with 81.4 degrees. Through yesterday this month's average is 81.0. Since the temperature is expected to run at, or slightly below, normal for the next few days, the record is safe.
For today we are stuck between a low pressure system south of Martha's Vineyard and a high pressure system centered over the upper Ohio Valley. That adds up to a cool northerly breeze for most of the day. The clouds should diminish as the day goes on but the afternoon sun will only warm the city to 80 degrees at best. As the Ohio Valley high moves eastward it will bring us relatively decent weather on Saturday. Look for highs in the mid 80s under mostly sunny skies. The only downside will be increasing humidity as the day progresses.
The weather on the ground is going to be more and more influenced by an upper level trough as the weekend progresses. Chances are good that trough will produce showers or thunderstorms late Saturday night through Sunday, and possibly into Monday. The best chance of rain looks to be Sunday afternoon. Sunday's high is expected to hit the low 80s, with more normal mid 80s expected early next week.