I have a lot of respect for what is evidently a difficult science, and, human nature being what it is, we only remember when they get it wrong.
But.....looking out the window in Cheltenham - it is dry. The BBC tell me it is raining, and has been raining all morning. The Glos TAF claims a 30% chance of RADZ till 1900 (sounds reasonable). This inconsistency between the BBC & the met office occurs frequently, yet the Met Office apparently supply them with the info! Frequently happens, who to believe? Usually go by the Met office, but have been stung.
The other one that amuses me (and happens a lot) is when you look at the overall forecast for the day on the BBC & there is a rain cloud, but on the 24 hour forecast it is sunny every hour. Maybe it only rains on the half hour.....