Ok so I'm familiar with the guidelines etc on what to dress baby for bed in during certain temperatures.
However I know all babies are different too...
So tonight it's 18.3 in our bedroom. DD2 is 4 months and still shares a room with myself (Dad is sleeping in the spare room).
I usually dress her in a 2.5 tog and sleep suit, the temperature can drop down to the low 17 and reach 19 recently.
Curiously what are you dressing your LO's in? Tonight I've put her in a sleep suit, short sleeve body suit and a 2.5 tog. Kind of hoping this may stop the couple of wake ups in the night too (she doesn't need feeding/just wakes up and babbles/squirms).