Using hourly soil temperature observations, the featured chart looks at periods of having the temperature above 50 degrees for 48+ straight hours for the first time each spring season and any subsequent periods below 50 for that same year. The featured chart is for Nashua (near Waterloo, Iowa). Having the soil cool back below 50 degrees after its first long stretch above is typical. The prolonged cool stretches are not desirable for crops that are already in the ground. The forecast has a return of warmer weather next week, so hopefully our current stretch of cool soils will reverse soon.

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Tags:   soil