La Vergne climate

La Vergne Frost Dates and Growing Season

NOAA 1991-2020 normals for Nashville Berry Fld, 13.9 km from La Vergne, elevation 560 ft

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Nashville Berry Fld. 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 4 and the first fall freeze around October 31, a growing season of about 209 days.

Median at 36°F
last April 16, first October 23
Median at 32°F
last April 4, first October 31
Median at 28°F
last March 25, first November 9

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 3Apr 28Apr 24Apr 21Apr 16Apr 13Apr 10Apr 6Mar 31
32°FApr 21Apr 15Apr 10Apr 7Apr 4Apr 1Mar 29Mar 25Mar 19
28°FApr 8Apr 3Mar 31Mar 28Mar 25Mar 21Mar 18Mar 15Mar 8
24°FMar 31Mar 24Mar 20Mar 17Mar 14Mar 10Mar 6Mar 2Feb 24
20°FMar 20Mar 15Mar 10Mar 6Mar 2Feb 27Feb 23Feb 16Feb 7
16°FMar 11Mar 3Feb 27Feb 22Feb 16Feb 11Feb 6Jan 31Jan 21

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 12Oct 16Oct 19Oct 21Oct 23Oct 25Oct 28Oct 31Nov 3
32°FOct 20Oct 23Oct 26Oct 29Oct 31Nov 2Nov 4Nov 9Nov 14
28°FOct 28Nov 1Nov 3Nov 6Nov 9Nov 12Nov 15Nov 20Nov 27
24°FNov 5Nov 10Nov 13Nov 17Nov 21Nov 25Nov 30Dec 3Dec 10
20°FNov 14Nov 21Nov 26Nov 30Dec 3Dec 7Dec 12Dec 19Dec 28
16°FNov 28Dec 4Dec 8Dec 14Dec 20Dec 27Jan 1Jan 7Jan 17

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°F209202196193188184180175168
32°F230223218213209206201197189
28°F254246239235230226221216209
24°F281272266259253248244237229
20°F307297290284278273267260251
16°F336324317311306299293286275

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
100% of years
16°F or colder
99% 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
3,550
Cooling degree days, base 65°F
1,806
Growing degree days, base 40°F
7,772
Growing degree days, base 45°F
6,271
Growing degree days, base 50°F
4,915
Growing degree days, base 55°F
3,725
Growing degree days, base 60°F
2,695

Growing degree days by month, base 50°F

Heating and cooling by month

MonthHeating DDCooling DDGrowing DD 50
January815024
February637143
March4649129
April20243312
May60162569
June2355804
July0471936
August0442907
September15260694
October17757357
November4656105
December713038

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 13.9 km from La Vergne. Low ground, valleys and open fields freeze earlier and later than a town center or a hillside.

More

Sources

NOAA NCEI U.S. Climate Normals, 1991-2020, annual and seasonal normals for station USC00406403 (Nashville Berry Fld). Public domain.