Frost/Freeze Information for Lexington, Kentucky

Records:
Latest spring frost (36°):  May 27, 1961
Latest spring freeze (32°):  May 20, 1894
Latest spring hard freeze (28°):  May 10, 1966
Earliest final spring frost (36°):  April 3, 1924 and April 3, 1948
Earliest final spring freeze (32°):  March 17, 1929
Earliest final spring hard freeze (28°):  March 4, 1927
Earliest fall frost (36°):  September 23, 1896, September 23, 1974, and September 23, 2012
Earliest fall freeze (32°):  September 30, 1899
Earliest fall hard freeze (28°):  October 3, 1974
Latest first fall frost (36°):  November 9, 1922
Latest first fall freeze (32°):  November 27, 1902
Latest first fall hard freeze (28°):  December 4, 1899
Longest growing season:  242 days in 1922
Shortest growing season:  159 days in 1974

Averages:
Average last spring frost (36°):  April 27
Average last spring freeze (32°): April 15
Average last spring hard freeze (28°):  April 3
Average first fall frost (36°):  October 15
Average first fall freeze (32°):  October 26
Average first fall hard freeze (28°): November 6

Two tables of graphs follow.  The first shows average dates of last spring freeze/hard freeze and first fall freeze/hard freeze.  The y-axis shows how many times that event has occurred during each week given on the x-axis.  For example, the last spring freeze in Lexington has occurred during the week of April 7-13 34 times (since records began in 1872).

The second table shows how these average dates have changed over time.  We broke the historical record down into decades, and found the average date for each decade.  The average for the entire period of record is shown with a red line, for comparison.  Only decades with sufficient data were used.

After the tables are contoured maps showing the median first freeze/hard freeze dates across the region.

Last spring freeze in Lexington Last spring 28 degree temperature in Lexington
First fall freez in Lexington Average date of first 28 degree temperature in Lexington

Average date of last spring freeze in Lexington, decadal Average date of last 28 degree temperature in Lexington, decadal
Average date of first fall freeze in Lexington, decadal Average date of first fall hard freeze in Lexington, decadal

Median date for first fall freeze across the region

Median date for first 28 degree temperature across the region

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