Last Freeze

As we slowly approach the time of year when the last freeze of the season occurs, there is one significant factor in place this year, that hasn’t necessarily been an issue the past couple of springs.  That issue?   Dry soil.  Areas with dry soil will generally be noticeably cooler than areas with wet soil because of the lower water vapor in the lowest levels of the atmosphere in dry locations.  In turn, with a light wind and a clear sky, locations with dry top soil can be several degrees colder.  What this means is a 38-degree low over wet soils could easily mean near or below freezing temps where soils are dry.  Unless it rains, this favors a later than average last freeze this year where it is the driest.

Daryl Ritchison