Now that its a chilly 82 degrees in the first week of Oct. here in NE WI.
What are the coldest temps you have camped in and the type of sleep system used, including tent? degree bag and pads.

It's 45 up here in the BWCA, and that was the high today.

It hit about 30 below on a fishing trip last January.

Wall tent and stove.

0 degree bag with thick fleece liner, thick closed cell foam pad.

Full long underwear, socks and hat.

We had to keep the stove going all night.

10 below is the coldest I have camped in. We only had one of those zipper pull thermometers though. How good are they?

I have an REI sleeping bag, synthetic fill, about 20 years old. I use two closed cell pads and sleep in full polypropylene underwear including a balacava. I have never hot tented it (yet) and two years ago was the first time I used a tent. I have always just slept under a tarp or nothing if it was clear.

I usually try to get the middle too.

roughly -30 with windchills around -60. It was hard to walk into the wind it that strong. Mid Feb last year. 2 20 degree bags, one inside the other. 3 season tent and 1 closed cell and 1 thermarest and an extra fleece blanket along the floor.Warm inside cold face.

Dissapointment Lake, M.L.K. Holiday 2005. It was -45 degrees in Ely that weekend but the nearest resort to us registered a -50. We had built our usuall 3 man quinzee on the ice for accomodations. Sleeping gear consisted of double bagging with at least one being a -20 bag, closed cell foam pads and pine boughs on the ice for extra insulation. I would guess the quinzee temp hovered somewhere around 0 degrees and we slept fine. it was fun waking to see the frozen bottle of vodka left near the fire and finding how all fuel/stoves (including my zippo) cease to work in those conditions. When those temps hit just remember to put your trust in strike anywhere matches, wood, and hot breakfast burritos and wine to start the day.

Coldest night for me has been -38. There were 4 of us. We were cold camping. The first thing we did when we made camp was to shovel snow into a pile large enough to dig 4 snow tunnels in. We let that set up and made dinner. Then dug the tunnels. We each slept in our own tunnel. There wasn't enough room to roll over in the tunnels and that was a mistake, not for cold but for comfort. I wanted as little air gap as possable under these conditions. We used a simple tarp and standard Thermo rest. Our bags were a mix of Cabela's and some off brand I bought on the internet. All were -20 snynthetic bags. We slipped into our bags and slid into the tunnels and put our coats inside out over the entrance of the tunnel. Some of us overdressed for sleeping and had to remove a layer.

In the morning we couldn't keep our water bottles thawed by the fire, they would freeze up and then burn the outside. A camp fire was of no help. Heater paste was the only way to get the stoves working.

My coldest was -19. I use a North Face Tundra -20 synthetic bag.

I double pad it. A Ridgerest underneath a Big Agnes pad. With a warm up walk around camp before bedding down, some Seirra Designs down booties and a hat, I'm as comfy as can be.

I'll be out this weekend in Black River State Forest in WI

I've camped in -35 below weather before. You want a -15 degree mummy bag with a liner and a closed cell matt. Make sure you wear wool too.Don't sleep on a cot because you will loose way more heat that way then sleeping on the ground. If you are sleeping in a unheated tent a suggest you sleep with your water bottle so it doesn't freeze.