The first thing to keep in mind is that EV’s aren’t bad in cold weather. In some ways they are much better than ICE cars (said with irony, given that Internal Combustion Engine acronym). Cold weather certainly affects all cars, it’s just with an EV you can measure it more accurately and you don’t have that extra benefit of all the wasted heat energy from a gas engine.

There is no avoiding some range loss associated with cold weather, due to simple lithium-ion battery chemistry. That, plus the need to heat the cabin without burning fossil fuels and using that heat byproduct, will give you some range loss in colder climates. A good rule of thumb is expect 10% range loss for temperatures around 50F and 20% range loss for temperatures around freezing.  Maryland doesn’t typically see temperatures past that, but the colder it gets, the more range you’ll lose. Extreme heat would have a similar impact, although exact numbers are not available.

Yes. There are several other items to keep in mind for winter weather (e.g. snow and ice and freezing temperatures):

1. Especially in slippery conditions, turn on Chill mode so you don’t accelerate your way into a ditch.
2. Along those same lines, set your Regen mode to low if you can (later cars with later software may not have this option), so Regen braking doesn’t cause unwanted tire sliding.
3. Others have had problems with folding mirrors getting frozen, so turn off the auto-fold option in the car’s Settings.
4. If you can, preheat the cabin using your smartphone app to melt off any snow and ice on the windows and doors.
5. In freezing conditions, run an old debit card along the bottom of the window to break the seal so the glass can slip into the door when opened.
6. If the door handles or charge port won’t open because they’re frozen, the official recommendation, past pre-heating the cabin, is to give it a fist bump to break the ice (without, it should be said, breaking anything else). Pouring hot water or using cellophane have been mentioned, but that just risks more freezing and/or more plastic pollution, and should not be necessary.

Tesla’s official support page on this topic can be found here.

Additionally, you will probably get some alerts about low tire pressure in the colder months. This happens to any vehicle’s tires due to physics. It’s always a good idea, in any weather, to make sure your tires are the proper pressure (defined on the label on the driver’s door frame, 42 psi for Model 3 18”). As you drive, tires will warm up a bit. If you go to higher elevations, the surrounding air is less dense so the air inside the tire may expand a bit more, appearing as higher pressure. Having a compressor in your car (sub-trunk maybe?) that will work from the 12V outlet and not overload the battery is always a good idea. With no particular recommendation, this Kensun one is known to work OK.

Only put air in these tires, and please don’t treat the psi as a percentage. That could be life-catastrophic, trying to get to 100.