Bogata climate

Bogata Frost Dates and Growing Season

NOAA 1991-2020 normals for Clarksville 2NE, 20.9 km from Bogata, elevation 435 ft

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Clarksville 2NE. 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 March 20 and the first fall freeze around November 10, a growing season of about 233 days.

Median at 36°F
last April 5, first November 1
Median at 32°F
last March 20, first November 10
Median at 28°F
last March 5, first November 23

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°FApr 21Apr 16Apr 12Apr 8Apr 5Apr 1Mar 28Mar 22Mar 14
32°FApr 11Apr 4Mar 31Mar 25Mar 20Mar 16Mar 11Mar 6Feb 28
28°FMar 28Mar 18Mar 13Mar 9Mar 5Mar 1Feb 27Feb 22Feb 13
24°FMar 13Mar 6Mar 2Feb 27Feb 23Feb 17Feb 10Feb 2Jan 26
20°FMar 3Feb 25Feb 18Feb 10Feb 2Jan 29Jan 23Jan 16Jan 5
16°FFeb 20Feb 11Feb 4Jan 29Jan 23Jan 16Jan 9Jan 2Dec 24

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 20Oct 25Oct 28Oct 31Nov 1Nov 4Nov 6Nov 10Nov 16
32°FOct 28Nov 1Nov 4Nov 7Nov 10Nov 13Nov 17Nov 22Nov 29
28°FNov 5Nov 10Nov 15Nov 18Nov 23Nov 27Dec 1Dec 5Dec 12
24°FNov 15Nov 23Nov 28Dec 2Dec 6Dec 11Dec 18Dec 25Jan 3
20°FNov 29Dec 6Dec 13Dec 22Dec 29Jan 2Jan 7Jan 14Jan 26
16°FDec 8Dec 15Dec 25Jan 1Jan 4Jan 9Jan 16Jan 26Feb 4

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°F235226220214211207202197190
32°F261252246239233228223215208
28°F289279274267262255250244231
24°F325312304296289282275267258
20°F360347339330322314306300289
16°F365365365362354346337328316

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
93% of years
16°F or colder
65% 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
2,850
Cooling degree days, base 65°F
2,142
Growing degree days, base 40°F
8,601
Growing degree days, base 45°F
7,005
Growing degree days, base 50°F
5,547
Growing degree days, base 55°F
4,250
Growing degree days, base 60°F
3,113

Growing degree days by month, base 50°F

Heating and cooling by month

MonthHeating DDCooling DDGrowing DD 50
January688142
February521262
March35312188
April15443349
May23191632
June1413862
July0529994
August0529993
September10322762
October11687441
November36513167
December619356

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 20.9 km from Bogata. 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 USC00411772 (Clarksville 2NE). Public domain.