Gully, dammit.
A favorite Foghorn Leghorn-ism:
“The snow’s gettin’ so deep the farmers have to jack up the cows to milk 'em!”
“It’s hotter than fourty hells.” This actually works better when you say it with a bit of a souther drawl, i.e. “hotter 'n fourdy hells.” (n.b. the fourty hells qualifier isn’t necessarily limited to weather; “Ain’t no way in fourdy hells I’m going there tonight.”)
“Pissing rain.”
And in Spain their expression for heavy rain translates as “It’s raining oceans.”
-Colder than a witches tit on the north side of an igloo.
-It’s so hot I’m sweating like Mike Tyson in a spelling bee.
Spanner weather: So cold it’ll tighten your nuts.