It was a nice spring day, and Sunday -- while starting off on the cool side -- will turn warmer still, and it will stay warm into Wednesday afternoon. Actually, it will get even hot (and dusty) by Wednesday afternoon.
But, the hot weather will be followed by a strong storm that should bring a general rain to the entire country, with a strong possibility of flooding late Wednesday and Thursday.
It should stay on the cool side into Shabbat, and Israhog could see colder weather and rain again.
Hag Kosher Samaech Pesach,