I Live approx 1.5 Miles from The National Met Office here in Exeter and they have over £10,000,000 of computers to help them and they Don't get our weather right locally so you guys are Buggered if you listen and watch forecasts.
If you want to know the weather look out the window! its more accurate!
According to stats they are just over 35% correct.
Just get some waterproof clothing and carry on, 'Dickies' workwear do some great stuff, I get mine at a local farm supply shop cheap as chips and dry inside all day!
Tip; get a size too big and they are good for winter too on top of all your warm gear!