Who said nobody does anything about the weather? Danny Dunn does! Of course if there hadn't been a drought when Danny went to the weather bureau to return a radiosonde—maybe nothing would have happened. But has there ever been a time when Danny could contain his curiosity?

Danny is naturally attracted to all the weather-forecasting instruments and decides to do some volunteer weather-observing. And when Danny and his friends Joe Pearson and Irene Miller discover that Professor Bullfinch has a new ionic transmitter that makes little clouds and miniature rainstorms, Pearson, Dunn and Miller (and Bullfinch) are in a new business.

Ezra Jack Keats' pictures carry the same spirit of fun and adventure in this fourth hilarious story of a boy who often rues his actions because he jumps too quickly to conclusions. But Danny and his friends learn a great deal about weather and weather instruments, and younger readers will, too!

From the dust jacket