Most car batteries will last three to five years. However, the temperature outside is one of the things that can potentially shorten the life of a battery. You need to check your battery frequently during the winter and summer. Hot weather can cause the fluid inside of your battery to evaporate. It can also overcharge your battery. When the battery overcharges, it will die slowly. Additionally, the extreme heat can cause your battery to corrode.
Cold weather can reduce the capacity of your battery. If the capacity is reduced, then it will be a lot harder for you to start your vehicle. The cold weather can also thicken the engine oil. This can also make it harder for your engine to start. It is also important to remember that your battery works harder when you use your windshield wipers and heater. This can cause your battery to die quicker.