I would strongly recommend that you don't do this - your PPL allows you to fly VFR only! If you don't have an IMC (or IFR) rating then you cannot fly in IMC (out of sight of the surface, or near/in cloud). If you think you can, then take the IMC test and prove you are capable!
You will be breaking the law and may/will/should be prosecuted. You may also constitute a danger to others (e.g. on the ground, as you spin onto the houses 3 miles short of the threshold).
Would you expect someone without a licence to fly a plane just because (s)he has 100 hours on MS-Sim? The same applies to Instrument Flying - if you wanna do it you gotta pass the exams, which are more than just the 15 hours Instrument Flying.
If your home-base/destination is below VFR limits then you have to divert. The only "excuse" would be if you become surrounded by bad weather and have no reasonable alternative - but that would call into question your "airmanship" in the first place.
Fly by the rules - PPL is VFR, or get the IMC.