Brr! I know it’s been chilly! And I completely understand your concern.
Fortunately, you don’t always need to have someone there with you to do so. To jump start a car by yourself, you’ll need a jump box (aka battery pack).
A jump box/battery pack carries enough energy to jump start your vehicle. All you have to do is attach the cables from the box to your vehicle, just like you would if you were connecting it to another car. In a few minutes, your car battery will have recharged enough to turn your vehicle on—and you’ll be good to go!