My first ever beer kit is now in keg, conditioning in the shed as I don't have any cool rooms in the house. But the weather here has turned very cold. The beer is now at 4 deg C. Will it suffer? Please advise. I have wrapped it in coats and towels so the cold nights don't drop the temp much from the daily average. Air temps this week should stay well above freezing so I don't fear that it will form ice in the brew.