Let the young child talk about the weather and what scares her or him. It would help to go online and help him, or she to discover sites that explain all kinds of weather. It would then be worthwhile to take the child outside to learn about cloud formations and which clouds bring what types of weather.
It helps to talk with the child about what precautionary steps can take for which kind of weather. Making a game of it and finding the child’s innate sense of humor will also help.
These steps should help the child calm down. It would also help to teach the child deep breathing techniques when weather-related anxiety hits.
Finally, you as the adult can embody a calmer, more fascinated response when troubling anxiety arises in the child with the weather.
Remember, the most helpful response is to let the child talk about his or her fears. Let him or her talk about all of what unsettles her or him about the weather. It’s also imperative not to criticize the child’s fears.
Also remember this about children who are in distress that we find hard to withstand or help: don’t attack the child, and don’t withdraw. Children cope best with adults who are receptive and calming.