Disconnect exterior hose and make sure all faucets are off 

Protect your exterior hose with insulated covers that will help with cold weathers 

Drain your hose to ensure no mess for later and to prevent freezing water, store away for warmer seasons 

Turn off valves that lead to outside, this will reduce frozen/burst pipes 

Check for any dripping faucets, no matter how small this may cause a higher water bill in the long run