晴れ時々曇りです。
Hare tokidoki kumori desu
Sunny sometimes cloudy.
Classic Japanese weather forecast format
今日は晴れたり曇ったりしていますね。
Kyō wa haretari kumottari shite imasu ne
Today it's alternating between sun and clouds.
〜たり〜たり = alternating between two states
雲の合間から日が差してきれいですね。
Kumo no aima kara hi ga sashite kirei desu ne
Sunlight streaming through the gaps in the clouds is beautiful, isn't it.
合間 = gaps/interstices; 日が差す = sun streams through, poetic and very Japanese
More Japanese Weather Phrases