Weather with Bill Evans

National Weather Service New York NY Friday July 18, 2025 On the heels of a cold frontal passage, high pressure will build from the Great Lakes through tonight, then pass offshore Saturday with a warm front approaching from the south. The front will move through Sunday morning, followed by a cold frontal passage late Sunday. High pressure will follow for Sunday night through Tuesday. A frontal boundary will be nearby for Wednesday and Thursday. Cold front has cleared the area. NW winds gusting to 20-25 mph in its wake into early afternoon will usher in a more refreshing mid summer air mass, with partly to mostly sunny skies under high clouds streaming across from the west, high temps close to the mid summer average, and afternoon dewpoints 55-60. Diminishing winds later this afternoon may allow a light sea breeze to develop along the immediate south shore of Long Island late. Mostly clear skies and light winds tonight will promote radiational cooling, with low temps ranging from the upper 50s/lower 60s inland, to the lower 70s in NYC and immediate eastern/western suburbs. Flow aloft will be zonal, with the sfc high moving offshore and winds becoming S. A weak shortwave trough may allow a few showers and possibly a tstm to develop in the afternoon from the NYC metro area west, with S CT and Long Island remaining mostly dry via more stable marine influence. High temps will again be close to the seasonal avg, with dewpoints rising through the 60s. As an upper trough moves across E Canada, heights aloft will start to fall, with a weak frontal system approaching Sat night into Sunday and bringing chances for showers and tstms. With PW near 2 inches any tstms could produce brief/locally heavy rain rainfall. WAA will lead to a warmer and more humid night Sat night, with lows 70-75 and dewpoints in the upper 60s/lower 70s by daybreak. Temps daytime Sunday will also be warmer, with highs near 90 in NE NJ and in the mid/upper 80s most elsewhere. Timing of the cold front passage remains consistent and looks to be Sunday late afternoon/evening. Much drier air returns behind the cold front with temperatures returning to more seasonal normals Monday through Wednesday. The cold front that moved through Sunday/Sunday night will remain south of the region, and possibly return north as a warm front later Wednesday into Thursday, bringing warmer and humid conditions back to the area. Seas are still at 5 ft on the ocean E of Moriches Inlet, so the SCA will remain in effect there til daybreak. High pressure will build in today, with conditions remaining below SCA thresholds thereafter into Tue night. For late Sat night into Sunday, with PW near 2 inches, any tstms could produce brief/locally heavy rain rainfall. Widespread impacts not expected attm. A moderate rip current risk has been forecast for the Nassau and Suffolk beaches for today, with 4-ft wind waves at 6-sec period still out of the SW. The rip current risk for Sat has been changed to low, with 2-ft southerly wind waves at 6-sec period and S winds mostly 10 kt or less.