I think you are being generous with your percentage. More like 80% of the time. Whether you play golf or not, I use the golfweather.com app for my weather forecast. It is correct 95% of the time. It is location and time specific.
True story. Me and my golf group use this site religiously. We make our tee times as much in advance as possible depending what the weather will be. Checked the site and it said that at 10am, Les Vieux chenes would have 60% chance of rain and nothing afterward. The Wetlands had 0% chance all day and the Farm had a 20% at noon. We played the Wetlands and checked Vieux at about 10:30. They were getting poured on. Never checked the Farm.
Negative though, it does not give the weather from 6pm-6am. I guess they figure no one plays golf past 6pm. But for 95 percent accuracy, I'll take it.