Today the weather overcast, but no rain, it is not particularly cold.

今天天气阴阴的，但没有下雨，也没有特别冷。

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The weather forecast is for showers and overcast skies.

气象预报说有阵雨而且阴天。

《柯林斯英汉双解大词典》

The weather for tomorrow: Clear in the morning, changing to light overcast in the afternoon.

明天的天气: 上午晴， 下午转多云。

《新英汉大辞典》

On the day of the sail, the weather was overcast but they decided to go anyway.

FORBES: Three Steps to Handling the Unexpected

And bowling conditions could suit England's swing bowlers, with weather forecasts indicating overcast conditions in Birmingham.

BBC: Cook defends beleaguered Vaughan

He blamed the airport, then the train, then the overcast weather.

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