Saturday is set to be the warmest day the Chicago area has seen since October.
But the good weather news ends there.
Temperatures were expected to rise into the mid-60s by Friday afternoon, following a chilly morning.
By Saturday, temperature highs could stretch into the 70s. The last time Chicago saw temps in the 70s was October 12, when the city recorded a high of 73 degrees.
On average, the city sees a 70-degree day for the spring season by March 31.
Rain is expected to move into the area late Saturday and into Sunday morning.
Things will stay wet for most of the day Sunday, with the potential for heavy rainfall and even thunderstorms in some areas.
Models predict rainfall totals ranging from 1-3 inches.
Temperatures look to stay in the 60s for areas north of Interstate 88 and in the 70s for areas south.
Heavy rain and storms continue into Monday morning as temps drop back into the 40s, bringing a chance for a wintry mix and the potential for some snow.
The threat for rain and possible snow showers returns Tuesday morning as highs remain in the low-40s.
Things look to warm up slightly Wednesday, reaching back into the 50s by Thursday.