National Climate Report - September 2019
First Freeze Dates

« National Climate Report - September 2019


First Freeze Dates

The date at which the first freezing temperature (32°F or less) is measured can occur at various times and locations in the United States. Year-to-year variability is expected and is depicted in the images below. The first image is of the stations that have measured a freezing temperature at any point from July 1 to September 30, 2019.

The next three images are examining NOAA's 1981-2010 Supplemental Climate Normals. The first of those three images depicts the earliest, of those 30 years, a station may expect a freezing temperature. Early is defined as the 10th percentile. The second image depicts the median date, of those 30 years, a station may expect a freezing temperature. Median is defined as the 50th percentile. The last image depicts the latest, of those 30 years, a station may expect a freezing temperature. Latest is defined as the 90th percentile.








Citing This Report

NOAA National Centers for Environmental Information, State of the Climate: National Climate Report for September 2019, published online October 2019, retrieved on October 13, 2019 from https://www.ncdc.noaa.gov/sotc/national/201909/supplemental/page-5.

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