It’s cool. (quite cold)
It’s chilly. (unpleasantly cold)
It’s cold.
It’s freezing. (very cold)
It’s below zero. (-10°)
It’s mild. (pleasant and not cold)
It’s warm. (a pleasantly high temperature)
It’s hot.
It’s boiling / It’s scorching (unpleasantly hot)
It’s humid. (warm and wet but not raining)
It’s damp. (cold and slightly wet)
It's drizzling. (raining lightly)
It’s raining / wet.
There are showers (raining intermittently)
It’s pouring. (raining a lot)
There’s a breeze. (a light wind)
It’s windy.
Mist ins’t usually very thick, and often occurs in the mountains or near the sea.
Fog is thicker, and can be found in towns and in the country.
Smog is caused by pollution and usually occurs in big cities.
heatwave
a period of unusually hot weather
drought
a long, usually hot, dry period when there is little or no rain
hail
small balls of ice that fall like rain
lightning
a flash of very bright light in the sky caused by electricity
thunder
the loud noise that you hear during a storm
blizzard
a snow storm with very strong winds
flood
when everything becomes covered with water
hurricane
a violent storm with very strong winds (also cyclone, tornado, typhoon)
monsoon
the season when it rain a lot in southern Asia
In the north of England and Scotland it will be very cold, with strong winds and heavy rain.
There will also be thick fog in the hills and near the coast, though it should clear by midday.
Driving will be dangerous as the roads will be icy.
However, the south of England and the Midlands will have clear skies and it will be bright and sunny, though the temperature will still be quite low.
Over the next few days the weather will be changeable with some showers, but occasional sunny periods.
It should become more settled over the weekend.