I bring you Realistic Temperatures - Canada, the first of a series of scripts for FS25 that will allow for more realistic and varied temperatures depending on the region you are playing.
For example, is you want to start a game with Gnadenthal you install the Central Canada file and then start your game with the map. Keep in mind if you don't have a weather monitor (as in the screenshot) your forecasts will not be completely accurate.
This mod also allows for rain/snow/hail to happen in more seasons, region dependent.
Must have Realistic Weather installed. Installation instructions in the readme file.