That's a problem with the weather guy. He might be 100% correct that it will rain tonight. But most of the time he's wrong about whether you will get wet on the way home from work.


Best rain policy: if it isn't raining in the morning as you head to work, it won't rain in the afternoon. If this turns out to be wrong, you get wet... big deal.
If it is raining in the morning, there is usually a small patch of lightness in the sky indicating it will soon stop. So best if you ride to work. If your assumption proves wrong, you get wet... big deal...