今天是雨天 Today is a rainy day

总是雨天 Always Rainy Day

不论下雨还是天晴 rain or shine

又是那样的雨天 Here's That Rainy Day ; Here's That Rainy Day-Alternative Take

不论下雨还是晴天 come rain or shine

雨天或是晴天 Come Rain Or Come Shine

那是一个下雨天 It was a rainy day

又是一个下雨天 Is A Rainy Day Again ; just another rainy day

是一个下雨天 It is a rainy day ; A rainy day

特别是阴雨天气 Especially rainy weather