Grandview climate

Grandview Frost Dates and Growing Season

NOAA 1991-2020 normals for Tell City, 18.2 km from Grandview, elevation 390 ft

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Tell City. 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 5 and the first fall freeze around November 1, a growing season of about 208 days.

Median at 36°F
last April 19, first October 23
Median at 32°F
last April 5, first November 1
Median at 28°F
last March 24, first November 13

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 5Apr 30Apr 25Apr 22Apr 19Apr 16Apr 12Apr 9Apr 4
32°FApr 23Apr 16Apr 11Apr 8Apr 5Apr 2Mar 31Mar 27Mar 20
28°FApr 9Apr 3Mar 31Mar 28Mar 24Mar 20Mar 17Mar 12Mar 5
24°FMar 29Mar 23Mar 19Mar 15Mar 11Mar 7Mar 3Feb 27Feb 20
20°FMar 18Mar 13Mar 7Mar 2Feb 27Feb 23Feb 19Feb 13Feb 5
16°FMar 10Mar 2Feb 25Feb 20Feb 15Feb 11Feb 5Feb 1Jan 26

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 9Oct 14Oct 17Oct 20Oct 23Oct 25Oct 27Oct 30Nov 3
32°FOct 18Oct 24Oct 27Oct 30Nov 1Nov 3Nov 6Nov 11Nov 18
28°FOct 31Nov 4Nov 7Nov 10Nov 13Nov 17Nov 21Nov 26Dec 1
24°FNov 10Nov 14Nov 18Nov 23Nov 26Nov 30Dec 3Dec 8Dec 15
20°FNov 17Nov 25Nov 30Dec 3Dec 8Dec 13Dec 19Dec 24Jan 1
16°FNov 29Dec 6Dec 14Dec 19Dec 25Dec 29Jan 2Jan 8Jan 18

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°F204197193189185181176171164
32°F231223217212208204199194186
28°F259251245239234229224218210
24°F286277270265260254250243235
20°F311303295289283278273265257
16°F335327319313307302297289280

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
98% 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
4,572
Cooling degree days, base 65°F
1,215
Growing degree days, base 40°F
6,487
Growing degree days, base 45°F
5,145
Growing degree days, base 50°F
3,947
Growing degree days, base 55°F
2,892
Growing degree days, base 60°F
1,981

Growing degree days by month, base 50°F

Heating and cooling by month

MonthHeating DDCooling DDGrowing DD 50
January98708
February799012
March627265
April30918214
May10493457
June10247687
July0351815
August1318781
September43157564
October26029262
November571169
December860014

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 18.2 km from Grandview. 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 USC00128698 (Tell City). Public domain.