Rogers climate

Rogers Frost Dates and Growing Season

NOAA 1991-2020 normals for Bentonville 4 S, 8.8 km from Rogers, elevation 1220 ft

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Bentonville 4 S. 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 12 and the first fall freeze around October 26, a growing season of about 195 days.

Median at 36°F
last April 24, first October 17
Median at 32°F
last April 12, first October 26
Median at 28°F
last March 31, first November 4

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 8May 3Apr 30Apr 27Apr 24Apr 21Apr 17Apr 14Apr 9
32°FApr 29Apr 23Apr 19Apr 15Apr 12Apr 8Apr 5Mar 31Mar 27
28°FApr 18Apr 12Apr 7Apr 3Mar 31Mar 28Mar 24Mar 19Mar 12
24°FApr 4Mar 31Mar 26Mar 22Mar 18Mar 13Mar 9Mar 5Feb 28
20°FMar 25Mar 18Mar 13Mar 9Mar 6Mar 2Feb 27Feb 22Feb 15
16°FMar 15Mar 9Mar 4Mar 1Feb 26Feb 20Feb 14Feb 8Jan 30

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°FOct 3Oct 7Oct 10Oct 14Oct 17Oct 19Oct 22Oct 25Oct 29
32°FOct 13Oct 17Oct 20Oct 23Oct 26Oct 29Nov 1Nov 4Nov 9
28°FOct 20Oct 26Oct 30Nov 1Nov 4Nov 7Nov 10Nov 15Nov 22
24°FOct 31Nov 4Nov 7Nov 12Nov 15Nov 19Nov 24Nov 29Dec 4
20°FNov 8Nov 14Nov 19Nov 23Nov 28Dec 1Dec 5Dec 9Dec 14
16°FNov 18Nov 25Nov 30Dec 4Dec 10Dec 13Dec 18Dec 24Jan 1

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°F194188183179175171168163157
32°F220211205200195191186180173
28°F243235227222217212208204195
24°F269261254247243237233226217
20°F290282275270265260255248239
16°F317306300294288283278271261

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
4,186
Cooling degree days, base 65°F
1,398
Growing degree days, base 40°F
6,922
Growing degree days, base 45°F
5,516
Growing degree days, base 50°F
4,260
Growing degree days, base 55°F
3,155
Growing degree days, base 60°F
2,200

Growing degree days by month, base 50°F

Heating and cooling by month

MonthHeating DDCooling DDGrowing DD 50
January924011
February720020
March539492
April27223239
May8997474
June6272715
July0402866
August1384847
September40181592
October22831293
November531493
December836019

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 8.8 km from Rogers. 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 USC00030586 (Bentonville 4 S). Public domain.