Danny Dunn and the Weather Machine

Danny Dunn and the Weather Machine is the fourth novel in the "Danny Dunn" series of juvenile science fiction/adventure books written by Raymond Abrashkin and Jay Williams. The book was first published in 1959 and originally illustrated by Ezra Jack Keats.
Plot introduction.
Danny accidentally discovers that an ionic transmitter Professor Bulfinch has been working on can be used to create miniature rainclouds.
Reception.
Floyd C. Gale of "Galaxy Science Fiction" rated the book four stars out of five for children: "The authors reap plenty of humor ... meanwhile sowing a considerable amount of meteorological knowledge in the process".
Editions.
McGraw-Hill
MacDonald and Jane's
Pocket Books/Archway Books