Neoga climate

Neoga Frost Dates and Growing Season

NOAA 1991-2020 normals for Neoga 4NW, 5.5 km from Neoga, elevation 643 ft

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Neoga 4NW. 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 16 and the first fall freeze around October 20, a growing season of about 185 days.

Median at 36°F
last April 25, first October 8
Median at 32°F
last April 16, first October 20
Median at 28°F
last April 4, first October 30

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 9May 4May 1Apr 28Apr 25Apr 23Apr 21Apr 18Apr 14
32°FApr 29Apr 24Apr 21Apr 18Apr 16Apr 13Apr 10Apr 7Apr 3
28°FApr 19Apr 15Apr 10Apr 7Apr 4Apr 2Mar 31Mar 26Mar 20
24°FApr 9Apr 4Apr 1Mar 29Mar 24Mar 21Mar 18Mar 13Mar 6
20°FMar 30Mar 24Mar 20Mar 17Mar 13Mar 10Mar 7Mar 2Feb 24
16°FMar 20Mar 15Mar 12Mar 8Mar 4Mar 2Feb 27Feb 19Feb 10

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°FSep 23Sep 28Oct 2Oct 5Oct 8Oct 11Oct 14Oct 17Oct 22
32°FOct 4Oct 10Oct 13Oct 17Oct 20Oct 23Oct 25Oct 29Nov 1
28°FOct 15Oct 21Oct 25Oct 28Oct 30Nov 1Nov 4Nov 8Nov 13
24°FOct 27Nov 1Nov 3Nov 7Nov 10Nov 13Nov 17Nov 22Nov 28
20°FNov 4Nov 10Nov 14Nov 18Nov 21Nov 25Nov 30Dec 4Dec 12
16°FNov 14Nov 20Nov 25Nov 29Dec 3Dec 7Dec 11Dec 18Dec 23

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°F182177172168164160156151144
32°F205198193189185181176171163
28°F228220215211207203199194187
24°F256247240234230225221215206
20°F281271264258253249244238230
16°F301292286279274268262258250

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
100% 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
5,272
Cooling degree days, base 65°F
1,168
Growing degree days, base 40°F
6,129
Growing degree days, base 45°F
4,869
Growing degree days, base 50°F
3,752
Growing degree days, base 55°F
2,764
Growing degree days, base 60°F
1,900

Growing degree days by month, base 50°F

Heating and cooling by month

MonthHeating DDCooling DDGrowing DD 50
January1,14902
February914010
March713353
April35911176
May11799450
June7262705
July1342806
August4283744
September63138526
October31031233
November653143
December98106

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 5.5 km from Neoga. 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 USC00116025 (Neoga 4NW). Public domain.