Kinsman Center climate

Kinsman Center Frost Dates and Growing Season

NOAA 1991-2020 normals for Jamestown 2 Nw, 10.9 km from Kinsman Center, elevation 1040 ft

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Jamestown 2 Nw. 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 4 and the first fall freeze around October 14, a growing season of about 161 days.

Median at 36°F
last May 18, first October 4
Median at 32°F
last May 4, first October 14
Median at 28°F
last April 25, 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 31May 28May 24May 20May 18May 15May 11May 6Apr 30
32°FMay 22May 17May 12May 9May 4May 1Apr 29Apr 25Apr 22
28°FMay 11May 4Apr 30Apr 28Apr 25Apr 22Apr 20Apr 16Apr 11
24°FApr 22Apr 19Apr 17Apr 14Apr 10Apr 8Apr 5Apr 2Mar 31
20°FApr 13Apr 9Apr 5Apr 3Apr 1Mar 30Mar 27Mar 23Mar 17
16°FApr 2Mar 31Mar 28Mar 25Mar 22Mar 18Mar 16Mar 13Mar 8

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 19Sep 25Sep 29Oct 1Oct 4Oct 6Oct 9Oct 12Oct 18
32°FOct 1Oct 5Oct 8Oct 11Oct 14Oct 18Oct 21Oct 25Nov 1
28°FOct 11Oct 18Oct 22Oct 26Oct 30Nov 1Nov 4Nov 8Nov 13
24°FOct 28Nov 1Nov 5Nov 7Nov 10Nov 14Nov 18Nov 21Nov 28
20°FNov 7Nov 11Nov 15Nov 19Nov 22Nov 25Nov 29Dec 2Dec 8
16°FNov 13Nov 20Nov 24Nov 28Dec 1Dec 5Dec 9Dec 15Dec 21

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°F159152147142138134129125117
32°F182175170166161157152148140
28°F209200196191187182177171162
24°F233227221218214210206201195
20°F258251245240236231227222217
16°F279271265261256251245240232

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
6,549
Cooling degree days, base 65°F
481
Growing degree days, base 40°F
4,631
Growing degree days, base 45°F
3,513
Growing degree days, base 50°F
2,538
Growing degree days, base 55°F
1,699
Growing degree days, base 60°F
1,005

Growing degree days by month, base 50°F

Heating and cooling by month

MonthHeating DDCooling DDGrowing DD 50
January1,23802
February1,08102
March938017
April546379
May25827262
June6997480
July16167617
August26132570
September13849366
October4416120
November741021
December1,05703

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 10.9 km from Kinsman Center. Low ground, valleys and open fields freeze earlier and later than a town center or a hillside.

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Sources

NOAA NCEI U.S. Climate Normals, 1991-2020, annual and seasonal normals for station USC00364325 (Jamestown 2 Nw). Public domain.