weather"
Where have you been checking? There are some diabolically awful "forecasts" that it would be a waste of a bullet to shoot. Many are automated with no sanity checking, some imply a far greater geographic relevance than is really there. Plug our postcode into some and you get a forecast, but it's based on Carlisle Airport, 20+ miles away and 1400' lower!
These aren't the "weather products" that the councils (should!) be using to predict the gritting requirement. Not only do they take forecasts/warnings from the Met Office etc any decent coucil also has it own network of sensors that give actual road surface temps etc.