Ibex Indie Hoodie

I think you would need a little more insultation. I think that this would be a good combination if your hiking in (mildly) windy conditions at those temperatures. However, I think you'd need an additional thin layer in otder to be comfortable. However, as always it depends on personal preference and factors such as will you just be sitting down around camp or will be doing camp chores etc.

In these types of conditions, I opt for my Ibex Woolies l/s top, NW Alpine Spider Light Hoody (similar to Patagonia Capilene 4 EW Hoody), and maybe a wind shirt if it is breezy.

the Indie really shines as a mid-layer on the move in cold temps, it offers some insulation value sitting around, but not a lot- it's not overly heavy material

I'd throw in a down (or syn) vest and assume your already carrying a windshirt and/or rain gear- w/ a base layer, the Indie, down vest and if need be a windshirt over the top you should be good into the 40's

I would through in one more layer of some sort. For me it would be a light down sweater. I think any extra layer you have will get you there.

The previous responders are right. I love the ibex for when I'm on the move. (It's really good at preventing body odor too.)
But for in camp it's just not enough. A dedicated down or synthetic insulation layer is a good idea.

"I would through in one more layer of some sort. For me it would be a light down sweater. I think any extra layer you have will get you there."

I'd also throw in another layer ;)

When I was up in Gates of the Arctic over the Labor Day weekend, I basically wore a hoodie (it wasn't as warm as my Ibex wool hoodie, though) plus a First Ascent soft shell when I was hiking and added a First Ascent rain jacket (the extremely lightweight one). For morning and evening when the sun was hidden behind the ridges and it was chilly (20's) I added a light First Ascent down jacket (one of the Climb for Clean Air benefits was a very nice discount at Eddie Bauer, hence all the First Ascent stuff – it's a pretty sweet deal). Even 100 miles past the Arctic Circle, I was pretty comfortable with that combination. It was especially nice to have the extra down layer while standing around in a bog hoping for the caribou herds to wander closer…

Depends on how much you are moving around.

I end up soaked with sweat when I reach camp, and so get pretty cold, pretty quick. Temps in 40s can have you shivering in 10 min once stop hiking.

I leave my hiking clothes on so my body will dry them, but not uncommon to have to put on fleece and a puffy, pretty much everything, to stay warm when its in the 40s. Need enough insulation to do this. I then sleep in them too, and by morning they are nice and dry.