How accurate is the 40-day weather forecast for ink weather?

The accuracy is very high. I have used a lot of weather software, and the weather forecast for three or four days may be relatively accurate, but once it exceeds one week, the accuracy will be greatly reduced, let alone the weather forecast for 40 days. But the ink weather is really different, which is worth such a high download volume. Although the current technical conditions are not accurate to the specific temperature, the trend is still very accurate and has surpassed many similar softwares.