An early English author writes:
“Thunders in the morning signifie wynde: about noone, rayne; in the
evening great tempest.
“Somme wryte (their ground I see not) that Sondayes thundre should
brynge the death of learned men, judges, and others; Mondayes thundre,
the death of women; Tuesdayes thundre, pleantie of graine; Wednesdayes
thundre, much blodshede; Thursdayes thundre, pleantie of shepe and
corne; Fridayes thundre, the slaughter of a great man and other horrible
murders; and Saturdayes thundre, a generall pestilent plague and great
deathe.”