A broad area of high pressure is sitting over the country east of the Rockies today, spelling a few days of warm and increasingly humid weather here in New York. Before the humidity arrives we should have a sunny and dry day with a high in the upper 80s on Monday afternoon. That heat will ensure that July winds up slightly warmer than average.
Tomorrow will start off dry but it looks like the humidity will increase noticeably as the day progresses. Tuesday's high will be close to 90 degrees.
Wednesday is shaping up to be pretty humid as the high moves offshore and we get treated to a southerly breeze. While the humidity isn't pleasant, the high pressure system allowing the Gulf air to reach us is doing double duty and keeping tropical storm Emily way to our south and east. There is a slight chance, especially north and west of the city, for afternoon showers or thunderstorms on Wednesday as first an upper level shortwave and then a weak cold front move through the area.
The humidity and a slight chance of showery-type precipitation are expected to hang around through Saturday. The temperature should drop a bit though, reaching the mid 80s on Thursday and Friday and probably only the lower 80s on Saturday.