For good weather:

Lovely day, isn’t it?

Isn’t it beautiful?

Wonderful, isn’t it?

Personally, I think it’s so nice when it’s hot- isn’t it?

For bad weather:

Nasty day, isn’t it?

Isn’t it dreadful?

The broadcast says we’re in for … a fine spell.

 Winter

a hard winter

a severe winter

fresh air

a biting cold

a piercing wind

to get frozen

a thick mist

it is misty

snow turns to slush

Autumn

a dense fog

a foggy day

splashes of mud

puddles

a chilly rain

it rains hard

the sky is overcast

slushy roads

a dull season

to be caught in the rain

to get wet

to soak to the skin

to be soaked through