Bitterly cold :

extremely cold

Chilly:

a little too cold to be comfortable

Mild:

warmer than usual for the time of year

Heatwave:

a period of unusually hot weather

Muggy syn humid:

warm and damp in an unpleasant way

Gale:

a strong wind

Pour (with rain):

rain heavily

Soaking wet soaked:

extremely wet

Breeze, breezy :

a light wind