Why would you want to check it cold and having sat overnight, when the handbook tells you to:
1. Get the bike up to a good running (operating) temperature
2. Stand bike on centre stand or hold upright
3. Leave for five minutes (dull if it's not on its centre stand, I grant you).
4. Check oil level
5. Top up, if necessary.
They even, in mine at least, helpfully suggest doing it a fuel stop. I guess that is just in case the owner cannot imagine what BuMW mean.
I can't see anywhere in the same Rider's Manual where BuMW have an alternative section for, "I want to do it cold" or "I want to do it when I get up" or "I can't be arsed to do that" Or, "I keep forgetting to do it. What should I do?".
Try remembering.
If you think you can remember to do it when the bike is cold (and the reading may well be wrong, so making it a pointless exercise) I am sure you can remember to do it when it's at operating temperature.
Not least it will save endless threads about, "Mine has no oil showing; mine has a 5/8, or maybe it's a half, I can't tell and I'm in my dressing gown; I stand mine overnight on the side stand, does that matter?"