Boston is expected to see a range of warm and chilly spring days, with some potential for rain. The National Weather Service (NWS) predicts a temperature roller coaster, with temperatures expected to be above normal and above the average for the first half of the week. Monday's temperatures are expected to reach the upper 60s, while Tuesday will be mostly cloudy, with a slight chance of rain and wind gusts increasing throughout the night. Wednesday could be the warmest day in quite a while, with high temperatures predicted to reach mid, even upper 70s in some spots. However, a cold front expected to lower the warmth down Wednesday evening, which is the best chance for rain showers.