1)
Raining cats and
dogs
2)
Come rain or shine
3)
Feel a bit under
the weather
4)
Feel as right as
rain
5)
Trust in the old
adage
6)
Red sky at night,
shepherd’s delight
7)
Red sky in the
morning, shepherd’s warning
8)
Take a peek
9)
Storm in a teacup
10) Put the wind up
11) Weather the storm
12) Fingers crossed