Another Farmer's Almanac Challenge

From the Farmer's Almanac:

Remember on St. Vincent’s Day,
If that the Sun his beams display,
Be sure to mark the transient beam—
Which through the casement sheds a gleam;
For ’tis a token bright and clear
Of prosperous weather all the year.

St. Vincent’s Day (today, Jan. 22) is heralded for its weather lore. A sunny day signifies “more wine than water” and means that the sap might begin to rise. Frost on that day presages a delayed crop.

So, looks like we're in for a good harvest, because the sun is full-on today. Oh, I hope it's right. I'd hate to be tricked by a poem.