Beverly climate

Beverly Frost Dates and Growing Season

NOAA 1991-2020 normals for Elkins Randolph CO AP, 5.3 km from Beverly, elevation 1979 ft

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Elkins Randolph CO AP. 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 5 and the first fall freeze around October 12, a growing season of about 159 days.

Median at 36°F
last May 16, first October 4
Median at 32°F
last May 5, first October 12
Median at 28°F
last April 24, first October 21

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 26May 23May 19May 16May 13May 9May 6Apr 30
32°FMay 21May 17May 12May 9May 5May 1Apr 29Apr 25Apr 20
28°FMay 13May 7May 2Apr 27Apr 24Apr 21Apr 17Apr 14Apr 8
24°FApr 27Apr 20Apr 16Apr 13Apr 9Apr 6Apr 3Mar 31Mar 25
20°FApr 13Apr 7Apr 4Apr 1Mar 30Mar 26Mar 23Mar 19Mar 14
16°FApr 2Mar 29Mar 25Mar 21Mar 18Mar 14Mar 10Mar 5Feb 28

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 21Sep 26Sep 30Oct 2Oct 4Oct 6Oct 8Oct 12Oct 15
32°FOct 1Oct 4Oct 7Oct 9Oct 12Oct 14Oct 17Oct 21Oct 25
28°FOct 8Oct 12Oct 15Oct 18Oct 21Oct 24Oct 27Oct 30Nov 2
24°FOct 16Oct 21Oct 24Oct 28Oct 31Nov 1Nov 4Nov 7Nov 14
20°FOct 26Oct 31Nov 3Nov 5Nov 8Nov 11Nov 15Nov 20Nov 27
16°FNov 4Nov 9Nov 12Nov 16Nov 21Nov 26Nov 30Dec 3Dec 9

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°F159154149145141137133128121
32°F178172167163159155151147141
28°F199193189184180176171166160
24°F223216211207203199195190182
20°F248240234230226221216210204
16°F274265258252247242237231223

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
5,442
Cooling degree days, base 65°F
617
Growing degree days, base 40°F
5,318
Growing degree days, base 45°F
4,066
Growing degree days, base 50°F
2,967
Growing degree days, base 55°F
2,025
Growing degree days, base 60°F
1,237

Growing degree days by month, base 50°F

Heating and cooling by month

MonthHeating DDCooling DDGrowing DD 50
January1,06207
February88108
March744037
April4115136
May18738329
June36122536
July6205663
August10173628
September9668424
October3887154
November680035
December941010

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 5.3 km from Beverly. 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 USW00013729 (Elkins Randolph CO AP). Public domain.