The National Weather Service says measurable snowfall accumulations will be possible Friday night into Saturday across Middle Tennessee.

There is a 90 percent chance of rain Friday before noon, which may turn to snow throughout the day as temperatures drop down to about 25 degrees.

Snow is likely Friday night, mainly before midnight, with a 30 percent chance of snow Saturday morning. The high for Saturday is 30 degrees.

Forecasters do not yet know how much snow accumulation is likely.

This weather will be a drastic change from earlier in the week, when temperatures are expected to climb into the low 60s on Wednesday and Thursday.