My dad is a farmer, and uses DTN for weather information. It's a paid service, not 100% sure of the price, but it provides excellent weather information. I see they offer a product tailored for transportation: https://www.dtn.com/industries/weather/transportation/

Their mobile site isn't the greatest, but it is usable. I've used it for trip forecasts before, it works well. Edit:one great thing is no ads, weather.com is unusable w/o an ad blocker, but this being a monthly payment=no ads to deal with.