Weather Phrasal Verbs:
1. Brighten up - the sky becomes lighter and the sun starts to shine
2. Cloud over - the sky becomes covered with clouds
3. Clear up - it stops being rainy or cloudy
4. Warm up - to become warmer
5. Cool down - to become cooler
6. Pelt down - fall very heavily
7. Break through - the sun starts to appear from behind the clouds.