Frost dates in Rio Grande City, TX

The average last spring frost in Rio Grande City is around February 16 and the first fall frost is around December 8. That gives Rio Grande City an average growing season of about 296 days.

Last spring frost

Early (10% chance after)January 18
Average (50%)February 16
Late (90%)March 22

First fall frost

Early (10%)November 14
Average (50%)December 8
Late (90% chance before)December 24

See the Rio Grande City planting calendar →