"Actually the accuracy rate of weather forecasting 24 hours ahead is very good......"
On Sunday at 4 PM, prior to leaving for Albany to drop my son off at his college (a 7 hour round trip), I checked the 12 hour forecast for the NY Thruway. A snowstorm was predicted to start “after midnight”. The snow started big time at 10 PM and I had a heck of a time getting back home.
The relied upon forecast was only for 8 hours into the future and it was off by 25%!
I am going by overall accuracy. Accuracy of course varies from locale to locale too. After all how hard would it be to forecast no rain in the Sahara?