A rainstorm that moved in yesterday evening and continued through today, dumped more rain (5.16") than what fell all summer (the second driest on record). The amount that fell today, 4.30", was a record for the date (that still stands). At the time this was Central Park's third greatest daily rainfall (now ranked 17th).
Remnants of the Great Okeechobee Hurricane (which killed 2,500+ in central Florida on 9/17) dampened the City with 1.70" of rain, and lashed it with gusty winds of 25-35 mph; 1.29" fell throughout the day today (with 0.58" of it falling between 10 AM-noon), and 0.41" fell in the wee hours of the 20th (with 0.29" falling between midnight-1 AM).
Today's high was a sizzling 94°, twenty degrees above average, and a record for the date.
1.90" of rain fell during the afternoon and evening, with much of it falling between 5-7:30 PM.
Humidity of 15% or lower occurs very infrequently in New York, and when it has happened it's been in March and April (in the years since 2000) - until today, when it dropped to 15% for a few hours during the afternoon. The last time the humidity was this low in September was on Sept. 11, 2001, when it reached 16%.