Spring and Fall Frost Dates for US Zip Code 20170
This date was collected using hourly weather observations from the weather station located at -. The data spans 30 years from 1990 to 2020.
The data was collected using the Visual Crossing Weather API and then processed to extract the last frost date of the Spring and the first frost date of the fall for each year.
The typical frost date is the average of the 30 years of frost dates. The typical growing season is the number of days between the average last frost date in the Spring and the first frost date in the Fall.
With our changing climate, please use these dates as guide to your planting. If you need to check the weather forecast, see the 15-day weather forecast.