The fall equinox is at 4:02 this afternoon but the atmosphere doesn't have time for astronomical niceties, as we are headed into the warmest weather in more than a month. Earlier in the month the jet stream formed a big ridge out west and a deep trough here in the east, producing record warmth in California and chilly weather here. That pattern, in the jet and in the temperature, has now reversed and we are in for several days of abnormally warm weather. Below that is a surface high pressure system moving slowly eastward, keeping what is now post-tropical cyclone Jose well offshore and bringing unseasonably mild air to the East Coast.

The outer reaches of Jose are responsible for today's occasionally brisk northerly breeze. Despite that wind, the temperature will rise to nearly 80 degrees this afternoon under mostly sunny skies. The winds will diminish overnight, allowing tomorrow to warm into the mid 80s. Sunday and Monday are likely to be even warmer, with highs in the upper 80s and summer-like humidity.

The extended forecast remains pretty fuzzy and depends on how Hurricane Maria and the remnants of Jose interact with the larger environment. In a remarkable show of longevity, Jose's remnants will still be just a few hundred miles offshore, stuck between high pressure systems. Meanwhile, Maria is expected to travel straight northward after passing through the Turks and Caicos today and be offshore east of Cape Hatteras by next Wednesday. Taking that path could then force the Jose remnants onshore well south of the city, but that's largely conjecture at this point.