Kingman climate

Kingman Frost Dates and Growing Season

NOAA 1991-2020 normals for Kingman Mohave CO AP, 13.3 km from Kingman, elevation 3420 ft

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Kingman Mohave 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 April 2 and the first fall freeze around November 11, a growing season of about 220 days.

Median at 36°F
last April 20, first October 31
Median at 32°F
last April 2, first November 11
Median at 28°F
last March 6, first November 22

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 9May 1Apr 27Apr 24Apr 20Apr 16Apr 11Apr 7Mar 30
32°FApr 21Apr 15Apr 10Apr 6Apr 2Mar 28Mar 22Mar 16Mar 8
28°FApr 5Mar 28Mar 19Mar 12Mar 6Feb 28Feb 25Feb 19Feb 10
24°FMar 7Feb 27Feb 22Feb 16Feb 10Feb 5Jan 30Jan 19Jan 6
20°FFeb 18Feb 7Feb 1Jan 25Jan 13Jan 5Dec 31Dec 24Dec 12
16°FFeb 10Jan 28Jan 15Jan 8Jan 2Dec 30Dec 23Dec 15Dec 10

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 14Oct 20Oct 24Oct 28Oct 31Nov 3Nov 6Nov 9Nov 13
32°FOct 26Nov 1Nov 5Nov 9Nov 11Nov 14Nov 17Nov 21Nov 24
28°FNov 6Nov 12Nov 15Nov 18Nov 22Nov 24Nov 28Dec 2Dec 7
24°FNov 15Nov 21Nov 25Nov 28Dec 2Dec 6Dec 11Dec 16Dec 23
20°FNov 24Nov 30Dec 6Dec 12Dec 17Dec 23Dec 28Jan 3Jan 23
16°FDec 3Dec 10Dec 16Dec 22Dec 28Jan 1Jan 6Jan 17Feb 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°F217208204198193189184178169
32°F249239232226220215210203195
28°F289277269262256250242234225
24°F330321312304298291283274262
20°F365361353345337331325316303
16°F365365365365365365358346333

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
84% of years
16°F or colder
36% 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
3,013
Cooling degree days, base 65°F
2,174
Growing degree days, base 40°F
8,377
Growing degree days, base 45°F
6,752
Growing degree days, base 50°F
5,325
Growing degree days, base 55°F
4,107
Growing degree days, base 60°F
3,063

Growing degree days by month, base 50°F

Heating and cooling by month

MonthHeating DDCooling DDGrowing DD 50
January646012
February505037
March3822136
April20225286
May54172583
June2413861
July06001,065
August05601,025
September7327769
October11673427
November4132113
December683011

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 13.3 km from Kingman. 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 USW00093167 (Kingman Mohave CO AP). Public domain.