Good evening, we lived in Alaska for 10 years, three in a 31 ft Airstream. There’s a book in that adventure. Temps outside are not as important temps inside the trailer. It can be 40 below outside but if inside it’s 40 above you’re good, cold but good.
Here’s what I’d do if I was making that trip. I’d buy
propane and gas every time I could, try to keep the tanks as full as possible. I’d make every effort to plug in at night, Not having electricity is a big deal at 10 below. The colder outside the colder inside your
fridge, It gives frozen vegetables a new meaning. If it’s real cold there can be condensation in the trailer a lot of it. Four season trailer or not water will accumulate below the
windows, inside cabinets, Where the bed covers meet the walls, puddles of water can be everywhere and anywhere.
One more thing, just because the sun is out doesn’t mean it’s warm outside. The trailer can freeze up in the daylight just as easily as it can at night. You may have to run the
furnace during the day to keep the temps up.
In truth the temperature in the trailer has to be below freezing for several hours or even days depending on the ambient, before the water lines start to freeze up.
I wouldn’t drive after dark, and I’d avoid
boondocking. I would try to get through northern BC, the Yukon, and eastern Ak as quickly and safely as possible. Check on road conditions frequently and don’t believe everything you read in the Milepost.
You’re going early enough - you’ll be fine. Just be prepared.
I wish I was going with ya.