Canisteo climate

Canisteo Frost Dates and Growing Season

NOAA 1991-2020 normals for Hornell Almond Dam, 11.9 km from Canisteo, elevation 1325 ft

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Hornell Almond Dam. 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 11 and the first fall freeze around October 8, a growing season of about 150 days.

Median at 36°F
last May 24, first September 28
Median at 32°F
last May 11, first October 8
Median at 28°F
last May 1, first October 23

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 6Jun 1May 30May 27May 24May 21May 17May 13May 7
32°FMay 26May 21May 17May 14May 11May 8May 5May 1Apr 28
28°FMay 16May 11May 7May 3May 1Apr 29Apr 26Apr 22Apr 18
24°FMay 4Apr 30Apr 25Apr 22Apr 19Apr 16Apr 13Apr 9Apr 4
20°FApr 20Apr 16Apr 12Apr 8Apr 6Apr 3Apr 1Mar 29Mar 23
16°FApr 9Apr 4Apr 2Mar 31Mar 29Mar 26Mar 22Mar 18Mar 14

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 13Sep 18Sep 22Sep 25Sep 28Oct 1Oct 2Oct 5Oct 9
32°FSep 26Oct 1Oct 3Oct 5Oct 8Oct 12Oct 15Oct 20Oct 25
28°FOct 5Oct 11Oct 16Oct 20Oct 23Oct 27Oct 31Nov 3Nov 7
24°FOct 21Oct 27Oct 31Nov 2Nov 5Nov 7Nov 11Nov 14Nov 20
20°FNov 1Nov 7Nov 11Nov 14Nov 17Nov 20Nov 24Nov 28Dec 3
16°FNov 12Nov 17Nov 21Nov 24Nov 28Dec 1Dec 4Dec 7Dec 15

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°F146140135130126122118113107
32°F170164159154150146141136129
28°F195188183178174170165159152
24°F219212207203200195192186178
20°F246238232228224221217211204
16°F267259253249244240236230224

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
7,543
Cooling degree days, base 65°F
297
Growing degree days, base 40°F
3,944
Growing degree days, base 45°F
2,934
Growing degree days, base 50°F
2,059
Growing degree days, base 55°F
1,314
Growing degree days, base 60°F
719

Growing degree days by month, base 50°F

Heating and cooling by month

MonthHeating DDCooling DDGrowing DD 50
January1,35700
February1,18001
March1,05908
April669036
May33415199
June10352401
July33115547
August4981498
September20732286
October541175
November84909
December1,16100

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 11.9 km from Canisteo. 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 USC00303983 (Hornell Almond Dam). Public domain.