Theres probably a better place to post this but it's my 'home' forum - I was at an FBO the other day using their weather computer and there was the option to pull up previous (ie historical) Metars and TAFS. Problem is I can't remember what site it was. Any ideas where to get old TAFS?

You will find a "METAR history" option in http://euro.wx.propilots.net/

Unfortunately www.wundergound.com doesn't work anymore, does anyone know of another site that provides old METARs from a few days back?

Thanks

Seem to work here.

http://www.osceolaaero.com/weather.html

Look under "METAR" & it gives you an option to select reports up to 48 hrs old.

Check the National Weather Service site for historic TAF/METAR data at:

https://w1.weather.gov/data/obhistory/KPNE.html

From 12/19 18:54 Eastern Standard Time through noon today sky condition clear

12/19 18:54 N 6 10.00 Fair CLR 34 21 41 34 59% 29 NA 30.26 1024.8
...
12/20 11:54 NW 9 10.00 Fair CLR 42 21 43% 37 NA 30.40 1029.4

That said, my experience is that overcast/broken nights over areas without cutural lighting are dark, dark, dark.

My suggestion is to deviate to follow highways, overfly cities, towns. Plan it from the get-go and you lose minimal time. IFweather was an issue in this incident, then opting to lose a little time by following any of the highways from the vicinity north of Atlantic City back to the Northeast Philadelphia airport, about 70 statute miles ete 0:35 versus 51 statute 0:25, which proved fatal.

If you're enroute and going lower and slower for weather, it's time to stop enroute or return to the starting point. Following that rule will go a long way to retiring after decades and thousands of hours of flight time... in my experience.

OGIMET?
https://www.ogimet.com/metars.phtml.en

Ogimet is what you need!