Peck climate

Peck Frost Dates and Growing Season

NOAA 1991-2020 normals for Yale 1 Nnw, 12.8 km from Peck, elevation 820 ft

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Yale 1 Nnw. 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 May 12 and the first fall freeze around October 5, a growing season of about 147 days.

Median at 36°F
last May 23, first September 25
Median at 32°F
last May 12, first October 5
Median at 28°F
last May 1, first October 20

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°FJun 4May 31May 29May 26May 23May 21May 18May 13May 8
32°FMay 26May 22May 18May 15May 12May 9May 6May 3Apr 29
28°FMay 17May 12May 8May 5May 1Apr 30Apr 26Apr 22Apr 17
24°FMay 6May 1Apr 27Apr 23Apr 20Apr 18Apr 15Apr 11Apr 5
20°FApr 23Apr 18Apr 15Apr 10Apr 7Apr 4Apr 2Mar 30Mar 23
16°FApr 9Apr 4Apr 1Mar 31Mar 28Mar 24Mar 20Mar 16Mar 11

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 11Sep 17Sep 20Sep 23Sep 25Sep 27Sep 30Oct 3Oct 7
32°FSep 23Sep 27Oct 1Oct 3Oct 5Oct 9Oct 12Oct 16Oct 21
28°FOct 3Oct 8Oct 12Oct 16Oct 20Oct 22Oct 26Oct 29Nov 3
24°FOct 17Oct 23Oct 27Oct 31Nov 1Nov 4Nov 7Nov 12Nov 17
20°FNov 1Nov 3Nov 7Nov 11Nov 15Nov 18Nov 21Nov 25Dec 1
16°FNov 9Nov 15Nov 19Nov 22Nov 25Nov 28Dec 1Dec 6Dec 13

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°F143136132127124120117113105
32°F168161156151147143139134128
28°F191184178174169165160154147
24°F215208203198194190185179171
20°F244235228224221217213207200
16°F268260253248243239234229222

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
7,491
Cooling degree days, base 65°F
385
Growing degree days, base 40°F
4,074
Growing degree days, base 45°F
3,062
Growing degree days, base 50°F
2,190
Growing degree days, base 55°F
1,442
Growing degree days, base 60°F
830

Growing degree days by month, base 50°F

Heating and cooling by month

MonthHeating DDCooling DDGrowing DD 50
January1,37000
February1,19700
March1,043010
April665035
May36113177
June8678444
July26147586
August44104525
September18039315
October510487
November845010
December1,16400

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 12.8 km from Peck. 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 USC00209188 (Yale 1 Nnw). Public domain.