pleasant and not cold
mild
raining lightly
drizzling
raining intermittently (short period of rain)
showers
unpleasantly cold
chilly
very cold
freezing
cold and slightly wet
damp
quite cold
cool
unpleasantly hot
boiling / scorching
a pleasantly high temperature
warm
raining a lot
pouring
-10 C
below zero
warm and wet, but not raining
humid
a light wind
breeze