Growing Degree Days (GDD) are a measure of heat units that have typically been associated with plant development. The equation to compute them is simple and only uses commonly available data variables of daily high and low temperature. The featured chart displays the daily distribution and average accumulation of GDDs for Ames. This year's values are the blue dots. This year has seen near zero GDDs up until near the start of April and a number of very cool days since then. The cool weather looks to continue until a warmup next week.

Voting:
Good = 57
Bad = 10

Tags:   gdd