I've suspected, without any knowledge/evidence, that the increasing energy in the atmosphere has made all forecasts harder in recent years.

I did notice that Dark Sky's hyperlocal weather was getting bad in my area at the end. I wonder if it has anything to do with 5G frequency rollouts. I had seen some warnings about accurate weather predictions could be affected by it, but a quick search isn't showing any "Turns out 5G is/is not messing with our weather satellites" follow-up articles