Peach Springs climate

Peach Springs Frost Dates and Growing Season

NOAA 1991-2020 normals for Diamond M Rch, 26.6 km from Peach Springs, elevation 5492 ft

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Diamond M Rch. 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 17 and the first fall freeze around October 10, a growing season of about 146 days.

Median at 36°F
last June 2, first October 1
Median at 32°F
last May 17, first October 10
Median at 28°F
last April 30, 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 16Jun 10Jun 7Jun 5Jun 2May 31May 28May 22May 16
32°FJun 4May 31May 25May 20May 17May 14May 9May 5May 1
28°FMay 17May 11May 5May 2Apr 30Apr 27Apr 23Apr 18Apr 11
24°FMay 1Apr 24Apr 20Apr 14Apr 9Apr 5Mar 31Mar 25Mar 16
20°FApr 10Apr 2Mar 28Mar 21Mar 15Mar 10Mar 6Mar 2Feb 22
16°FMar 27Mar 12Mar 6Mar 2Feb 26Feb 20Feb 13Feb 5Jan 23

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 20Sep 24Sep 27Sep 29Oct 1Oct 4Oct 6Oct 9Oct 15
32°FSep 28Oct 2Oct 5Oct 7Oct 10Oct 14Oct 16Oct 20Oct 26
28°FOct 8Oct 13Oct 16Oct 20Oct 23Oct 27Oct 31Nov 4Nov 8
24°FOct 18Oct 24Oct 30Nov 3Nov 6Nov 9Nov 12Nov 16Nov 20
20°FNov 1Nov 7Nov 12Nov 16Nov 19Nov 21Nov 24Nov 28Dec 4
16°FNov 13Nov 19Nov 23Nov 27Dec 1Dec 4Dec 8Dec 13Dec 20

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°F140133129125121118114110103
32°F170161155151146142138133125
28°F200191186181177172166159152
24°F234226219213209203197190180
20°F272263256249243237230223213
16°F314301293287280272266257245

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
4,879
Cooling degree days, base 65°F
658
Growing degree days, base 40°F
5,373
Growing degree days, base 45°F
4,025
Growing degree days, base 50°F
2,917
Growing degree days, base 55°F
2,006
Growing degree days, base 60°F
1,259

Growing degree days by month, base 50°F

Heating and cooling by month

MonthHeating DDCooling DDGrowing DD 50
January85900
February72801
March646018
April464075
May24514254
June46102506
July1257721
August4208670
September5875469
October3292176
November620027
December88001

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 26.6 km from Peach Springs. 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 USC00022527 (Diamond M Rch). Public domain.