Metro Detroit weather: Wet Saturday night, becoming chilly Lows near 50 degrees Published: Updated: Tags: DETROIT – Welcome to Saturday night, Motown. The Detroit area gets a healthy dose of moisture tonight and tomorrow. Our lawns and gardens will soak it up nicely, but be careful while traveling. It becomes chilly overnight and the rest of the weekend. It becomes a bit milder and more spring-like the rest of next week. This includes more spring showers for the first half of it. Saturday night will be rainy chillier. Heavy downpours and gusty winds are possible after midnight. As much as a half inch of rain or more of rain is possible by dawn. Temperatures fall to near 50 degrees by Sunday morning.