Sherburn climate

Sherburn Frost Dates and Growing Season

NOAA 1991-2020 normals for Sherburn 3WSW, 4.5 km from Sherburn, elevation 1320 ft

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Sherburn 3WSW. 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 28 and the first fall freeze around October 8, a growing season of about 162 days.

Median at 36°F
last May 6, first September 28
Median at 32°F
last April 28, first October 8
Median at 28°F
last April 18, 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°FMay 18May 14May 11May 8May 6May 4May 2Apr 30Apr 24
32°FMay 9May 5May 2Apr 30Apr 28Apr 25Apr 22Apr 18Apr 13
28°FMay 1Apr 27Apr 23Apr 20Apr 18Apr 14Apr 11Apr 7Apr 4
24°FApr 23Apr 18Apr 14Apr 11Apr 8Apr 6Apr 3Mar 31Mar 25
20°FApr 16Apr 10Apr 6Apr 3Apr 1Mar 29Mar 24Mar 19Mar 14
16°FApr 8Apr 2Mar 30Mar 25Mar 21Mar 18Mar 15Mar 11Mar 7

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 16Sep 20Sep 23Sep 26Sep 28Oct 1Oct 3Oct 6Oct 11
32°FSep 23Sep 28Oct 1Oct 5Oct 8Oct 11Oct 14Oct 18Oct 22
28°FOct 5Oct 11Oct 14Oct 18Oct 20Oct 23Oct 25Oct 29Nov 1
24°FOct 18Oct 21Oct 24Oct 27Oct 29Nov 1Nov 4Nov 7Nov 11
20°FOct 25Oct 30Nov 1Nov 4Nov 6Nov 8Nov 11Nov 15Nov 20
16°FNov 1Nov 4Nov 7Nov 10Nov 13Nov 16Nov 20Nov 25Nov 30

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°F161155150147143140137133126
32°F183176170166162158154149143
28°F204196192188184180175170163
24°F223216210206202198194189182
20°F241233227223219214209205198
16°F256248243238234230226219210

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
7,822
Cooling degree days, base 65°F
588
Growing degree days, base 40°F
4,559
Growing degree days, base 45°F
3,537
Growing degree days, base 50°F
2,620
Growing degree days, base 55°F
1,815
Growing degree days, base 60°F
1,133

Growing degree days by month, base 50°F

Heating and cooling by month

MonthHeating DDCooling DDGrowing DD 50
January1,56200
February1,29000
March1,045010
April595166
May25636276
June36142556
July9212668
August27143581
September15251357
October5224100
November95107
December1,37800

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 4.5 km from Sherburn. 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 USC00217602 (Sherburn 3WSW). Public domain.