Well, last night was -20 and the next couple will be -15 with a stiff 10-20 mph wind. Wind chills are -30 to -40. So yeah its wicked cold. Not the coldest ive seen but cold. And the lil F100 nordic isnt having a problem with it. Love this little stove. Wouldn't work for most people but does me just fine. -12 right now .....74 in the house. So how cold is it at your place.