The weather has warmed up a bit, and it will warm up some more tomorrow.
But then a cool front will once again bring a chill to the air, as well as another period of light rain on Sunday.
The cool weather will last into Tuesday, and then the weather should turn nice for Purim (nice and possibly quite warm).
While it is true that the warm weather will make us think that spring has sprung, more winter like weather should return the following week. It may actually turn downright chilly as a ridge of high pressure splits Europe between an intense low pressure area off the coast of England and a deep trough in the eastern Mediterranean.