Minus fourteen Celsius, looking up our driveway.
You can have cold weeks in Boston in particular during January and February. Last week while I was in Seattle it has been particularly cold and quite consistently throughout the week. Ana reported me a -23 C read off from the thermometer in our car in the early morning (was it Wednesday) and I immediately felt toasty warm in Seattle at 5 C in the morning hours. Unfortunately we do not have a photographic record of minus twenty three Celsius. On the other hand we have a photo showing a whopping -14 C in our car while I am steering the car down our driveway without properly wearing my seatbelt. Arlington can be cold in the Winter, of course Minnesota is much worse 😉