Oneida County climate

Oneida County Frost Dates and Growing Season

NOAA 1991-2020 normals for Malad City, 21.4 km from Oneida County, elevation 4470 ft

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Malad City. 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 22 and the first fall freeze around September 20, a growing season of about 116 days.

Median at 32°F
last May 22, first September 20
Median at 28°F
last May 4, first October 2

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°F–––––––––
32°FJun 16Jun 6Jun 1May 28May 22May 18May 15May 11May 6
28°FMay 21May 14May 10May 7May 4May 2Apr 30Apr 26Apr 22
24°FMay 4Apr 30Apr 27Apr 22Apr 19Apr 16Apr 12Apr 8Apr 2
20°FApr 18Apr 13Apr 8Apr 5Apr 1Mar 29Mar 23Mar 17Mar 11
16°FApr 4Mar 27Mar 19Mar 14Mar 11Mar 9Mar 5Mar 2Feb 26

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°F–––––––––
32°FSep 4Sep 10Sep 14Sep 17Sep 20Sep 23Sep 26Oct 1Oct 6
28°FSep 14Sep 21Sep 25Sep 28Oct 2Oct 5Oct 8Oct 13Oct 19
24°FSep 27Oct 3Oct 7Oct 13Oct 16Oct 19Oct 23Oct 27Nov 1
20°FOct 13Oct 19Oct 23Oct 26Oct 29Nov 1Nov 5Nov 8Nov 13
16°FOct 25Oct 30Nov 1Nov 5Nov 9Nov 12Nov 16Nov 20Nov 24

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°F11010298938784787263
32°F1411331271221161111059989
28°F169163158153150144139133122
24°F203194188183178172167163156
20°F235226220216211205199192184
16°F262256250244240235230224214

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
7,046
Cooling degree days, base 65°F
435
Growing degree days, base 40°F
4,175
Growing degree days, base 45°F
3,115
Growing degree days, base 50°F
2,221
Growing degree days, base 55°F
1,481
Growing degree days, base 60°F
885

Growing degree days by month, base 50°F

Heating and cooling by month

MonthHeating DDCooling DDGrowing DD 50
January1,28200
February1,02500
March82203
April572035
May3264176
June12351383
July16200649
August21157601
September17724309
October543061
November89602
December1,24600

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 21.4 km from Oneida County. 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 USW00024151 (Malad City). Public domain.