(of weather) to clear up

clear sky

sunny and cloudless

noun; sunny day

to brighten up

clear weather

lit. thunderclap from a clear sky (idiom)

a clear and boundless sky

bright and sunny weather

clear sky; cloudless sky

rain or shine

see 晴隆縣|晴隆县[Qing2 long2 Xian4]

to clear up (of weather after rain)

(lit. and fig.) barometer

Qinglong, a county in Qianxinan Buyei and Miao Autonomous Prefecture 黔西南布依族苗族自治州[Qian2 xi1 nan2 Bu4 yi1 zu2 Miao2 zu2 Zi4 zhi4 zhou1], Guizhou

sky clears after rain

teru teru bōzu (traditional Japanese doll hung outside windows in hope of sunny weather)

to shift between sunny and raining randomly; to have a "British weather"

mostly sunny; mostly clear (meteorology)