Maysville climate

Maysville Frost Dates and Growing Season

NOAA 1991-2020 normals for Hofmann Forest, 10.1 km from Maysville, elevation 47 ft

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Hofmann Forest. A median date has an even chance of a later freeze in spring, or an earlier one in fall.

The last spring freeze typically comes around April 6 and the first fall freeze around November 1, a growing season of about 204 days.

Median at 36°F
last April 22, first October 23
Median at 32°F
last April 6, first November 1
Median at 28°F
last March 27, first November 7

Last freeze in spring

The chance of a later freeze than the date shown. At 10 percent, one spring in ten still freezes after the date; planting after the 10 percent date for 32°F is the cautious choice.

Threshold10%20%30%40%50%60%70%80%90%
36°FMay 10May 2Apr 29Apr 26Apr 22Apr 17Apr 14Apr 10Apr 4
32°FApr 23Apr 18Apr 14Apr 10Apr 6Apr 3Mar 31Mar 28Mar 23
28°FApr 12Apr 6Apr 2Mar 30Mar 27Mar 24Mar 19Mar 14Mar 6
24°FApr 1Mar 26Mar 21Mar 16Mar 12Mar 8Mar 3Feb 27Feb 19
20°FMar 17Mar 9Mar 4Feb 28Feb 25Feb 18Feb 11Feb 2Jan 23
16°FMar 5Feb 26Feb 18Feb 7Jan 31Jan 28Jan 21Jan 13Dec 31

First freeze in fall

The chance of an earlier freeze than the date shown. At 10 percent, one fall in ten freezes before the date.

Threshold10%20%30%40%50%60%70%80%90%
36°FOct 10Oct 14Oct 16Oct 20Oct 23Oct 26Oct 29Nov 1Nov 5
32°FOct 17Oct 22Oct 25Oct 28Nov 1Nov 2Nov 5Nov 9Nov 14
28°FOct 25Oct 30Nov 1Nov 4Nov 7Nov 11Nov 15Nov 20Dec 1
24°FNov 3Nov 8Nov 12Nov 16Nov 20Nov 26Dec 2Dec 8Dec 22
20°FNov 15Nov 22Nov 28Dec 3Dec 9Dec 18Dec 26Jan 4Jan 16
16°FDec 1Dec 7Dec 15Dec 26Jan 1Jan 7Jan 14Jan 22Feb 3

Growing season length

Days between the last spring and first fall freeze at each threshold, with the chance of a season at least that long.

Threshold10%20%30%40%50%60%70%80%90%
36°F207199193188185181176171162
32°F227219213209204200196191185
28°F253243236231226221217211201
24°F288276267260254248241235227
20°F331315306298292284277268254
16°F365356345336330319311303291

How often it gets that cold

The share of years with at least one night at or below each temperature.

36°F or colder
100% of years
32°F or colder
100% of years
28°F or colder
100% of years
24°F or colder
100% of years
20°F or colder
99% of years
16°F or colder
86% of years

Degree days

A degree day is one degree of the daily mean temperature beyond a base, for one day. Heating degree days count cold (the fuel a house burns), cooling degree days heat, growing degree days the warmth a crop needs; each crop has its own base.

Heating degree days, base 65°F
3,117
Cooling degree days, base 65°F
1,454
Growing degree days, base 40°F
7,655
Growing degree days, base 45°F
6,081
Growing degree days, base 50°F
4,665
Growing degree days, base 55°F
3,416
Growing degree days, base 60°F
2,345

Growing degree days by month, base 50°F

Heating and cooling by month

MonthHeating DDCooling DDGrowing DD 50
January675145
February548151
March4485123
April19937304
May59122529
June6286730
July0389854
August0343807
September12204642
October15957374
November4158137
December596269

What this means

NOAA computes these from the daily lows at the station over 1991-2020, fitting the dates of each year's last and first freeze to a distribution, so a date can be stated at any level of risk. 36°F is a frost risk for tender plants on a clear, calm night, since the ground cools below the air above it; 32°F is a freeze; 28°F is a hard freeze that kills most annuals.

The station is 10.1 km from Maysville. Low ground, valleys and open fields freeze earlier and later than a town center or a hillside.

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Sources

NOAA NCEI U.S. Climate Normals, 1991-2020, annual and seasonal normals for station USC00314144 (Hofmann Forest). Public domain.