Go with the flow.
SEVERE WEATHER WARNING
We have tested our hoses to minus 40 degrees. We performed the test in the controlled environment of an industrial strength deep-freezer. Extreme cold temperatures combined with wind-chill can still cause sections of the hose to freeze. If you plan to use the hose in extreme weather conditions, we recommend adding foam pipe insulation to those parts of the hose exposed to extreme conditions. Be sure not to insulate or cover the thermostat. If you have a frozen hose problem, you may find the solution to the issue on our FAQ page.
We are currently using this hose on our RV in New England. We have experienced temperatures down to 0 degrees without any problems. This hose has been worth its weight in gold and has left us with water when others have lost it... It is not only safe but easy to use. We like it so much we bought a 50 foot one also...Paul