[war1025]

> If they predict sub-zero temperatures in early spring you have to cover your plants in the garden or they are likely to die

Around here they just call it a "frost warning"

> Nobody says in the weather prognosis "beware people it will get sub-negative 17 C at one point"

If it gets too cold out, they do advise people to take extra care being outside due to the danger.

> you can't distinguish between for example 70 and 80 F

You really can.

> can't do that with pounds and gallons.

A pint ~ 1 lb. So a gallon is ~8lb.