Multiple rounds of thunderstorms and showers will be making their way through Maine on Saturday.In southern Maine, fog is expected to increase along the coastline later Friday evening.Temperatures will fall into the 50s Friday night and they will remain there on Saturday."As soon as temperatures drop, that's going to become much more widespread and dense in spots Friday night and into Saturday," said Maine's Total Weather meteorologist Colleen Hurley.There could be some isolated showers during the overnight hours, but there is a flooding threat on Saturday due to the rounds of rain and the potential for downpours."There will be some dry time in between, but any bouts of heavy rain could cause some localized flooding in poor-drainage areas," Hurley said. "We're keeping a close eye on those showers and storms for Saturday."INTERACTIVE RADAR | MAP ROOMMaine's Total Weather expects Sunday to be warmer and drier, but there are still some chances for thunderstorms.An isolated shower is not out of the question on Monday with generally cloudy and cool conditions expected for both Monday and Tuesday. The cooling trend will continue throughout the week, with high temperatures in the low-to-mid 50s, possibly even dipping into the upper 40s by Thursday. There is also a chance of rain by the end of the week."It's going to be feeling more like late March or early April," Hurley said.Maine's Total Weather is keeping an eye on Memorial Day weekend. It’s still a bit too far out to forecast precisely, but we are looking at a chance for rain with temperatures slowly returning to normal.