The phrase "afraid of the rain" is correct and usable in written English.
You can use it when expressing a fear or apprehension about rain or wet weather conditions.
Example: "She was afraid of the rain, so she decided to stay indoors instead of going for a walk."
Alternatives: "scared of the rain" or "fearful of the rain."
"Some people are now afraid of the rain.
Children who were afraid of the rain are now playing in the rain and in the sea.
But Trump quickly grew infuriated by a torrent of tweets and media coverage suggesting that the president was afraid of the rain and did not respect veterans.
When a reporter in the Élysée courtyard called out to a soaked Hollande, "you are not afraid of the rain?", he smiled and shot back, "I am not afraid of anything".
In voice-over, a woman spoke in Japanese, and Hoghe translated: "After Chernobyl, people in Europe were afraid of the rain.… In Hiroshima, the patterns of the kimonos were burned on the skin of the women".
Removed some of the stones of the mastaba room, which were on the debris north of G 2411 and put the stones on the room roof, because they are inscribed and painted with colors, and we [are] afraid of the rain.
Show me a man without a Gore-Tex jacket in his bag and I'll show you a pasty-faced townie, afraid of the slightest spattering of rain when he should be glorying in its dance on his face.
The UN's World Food Programme WFPP) is afraid that, when they hear of the rain, the money will dry up altogether.
"Children have become afraid of rain, as they had bad memories of the intense rain and wind during the Cyclone.
As for the wimpiness factor, it is true that Seattleites revel in stories of people elsewhere being afraid of rain.
It's as if he's a fragile flower held together with duct tape and glue, deathly afraid of rain, wind or a flirtatious hair-mussing from a colleague.
