Charles Ellicott Commentary Proverbs 26:1

"As snow in summer, and as rain in harvest, So honor is not seemly for a fool." — Proverbs 26:1 (ASV)

As rain in harvest. — This was very unusual in Palestine (compare 1 Samuel 12:17 and following verses), and of course very unsuitable for carrying on the work of harvest.

So honour is not seemly for a fool.— That is, for a dull person, confident in his own wisdom (Proverbs 1:22). It only confirms him in his good opinion of himself, making him less inclined than ever to learn.