Cold weather won't stop your EV charging, but it can slow rapid charging. A cold battery limits how fast it will accept DC power, so a winter rapid stop can take longer than the same stop in summer until the pack warms.
Many cars precondition the battery on the way to a planned rapid charger, warming it so it charges at full speed. Home AC charging is barely affected by the cold, it's slow enough that battery temperature isn't the limit.
Our journey twin lets you pick the month so cold-weather energy use is reflected in the estimate. It models the energy and range effects of cold; per-car cold charging curves are a planned refinement noted on the methodology page.