how rare is it to have snonow mamay. >> yes, it's quite unususual.or example central park in new york had the f first may snow since 1977, it's over 40 years. some flurries f fell in places like pennsylvania, the statate new york, as welll as the city f toronto. take a look at this footage. some powerful cold air moved through bringing some unusual winterer weather, on saturday, torontnto had s snowfalll flyin through green trees, toronto hasn't had snow on the day for the past 28 years. frost advisories and freeze warnings have been widely posted in the areaea, unusually low temperatures will continue to grip the area as we go into tuesday morning at least, for example, the morning low in washington, d.c., could be only 6 degrees, nearly lly 5 degree colder than average. it should be 6 degrees, but minus 1 in toronto on tuesday so do bundle up. we're looking at very low high temperatures across midportions of japan including tokyo, tokyo's high 28 degrees on monday, that's 5 degrees warmer than average, second highest temperature of the season so fa