Going to freeze in the next few days. Will draining my radiator get rid of most of the water in the engine as well?

My water pump is spraying coolant all over the engine belts (making them slip and car looses power. Was minimal the for a week and it finally failed today.)

I've been replacing lost coolant over the past couple days with only water so i don't know if the ratio is fine for 20f weather.

I'm wondering how I can protect my engine from damage if the water freezes overnight before I can replace the water pump?

*2013 dodge Challenger RT