Hi Cap'n,
Local weather saying here in Clare -
"If you can see the mountain (Sleibh Callan) it's going to rain,
If you can't see it, it's raining already".
Very true!!!!
most authorative bok on weather lore is Edward Inward' 'Weather Lore'
The third edition we've got was published in 1898, but I believ it is still available, or was until recently.
Jim Carroll