Laverne climate

Laverne Frost Dates and Growing Season

NOAA 1991-2020 normals for Gate, 21.3 km from Laverne, elevation 2250 ft

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Gate. 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 13 and the first fall freeze around October 28, a growing season of about 196 days.

Median at 36°F
last April 23, first October 19
Median at 32°F
last April 13, first October 28
Median at 28°F
last April 3, first November 5

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 6May 2Apr 29Apr 25Apr 23Apr 20Apr 17Apr 14Apr 10
32°FApr 27Apr 22Apr 19Apr 15Apr 13Apr 9Apr 7Apr 3Mar 30
28°FApr 19Apr 14Apr 9Apr 6Apr 3Apr 1Mar 28Mar 23Mar 15
24°FApr 8Apr 3Mar 31Mar 26Mar 22Mar 17Mar 13Mar 8Mar 3
20°FMar 31Mar 23Mar 17Mar 13Mar 9Mar 6Mar 3Feb 28Feb 22
16°FMar 18Mar 10Mar 6Mar 2Feb 28Feb 24Feb 20Feb 15Feb 8

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 9Oct 14Oct 16Oct 19Oct 22Oct 24Oct 27Oct 31
32°FOct 14Oct 19Oct 22Oct 25Oct 28Oct 30Nov 2Nov 5Nov 9
28°FOct 21Oct 27Oct 31Nov 2Nov 5Nov 7Nov 10Nov 14Nov 18
24°FOct 30Nov 3Nov 7Nov 10Nov 13Nov 16Nov 19Nov 22Nov 29
20°FNov 4Nov 10Nov 15Nov 18Nov 22Nov 24Nov 29Dec 2Dec 8
16°FNov 13Nov 20Nov 24Nov 28Dec 1Dec 5Dec 9Dec 15Dec 23

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°F196190185180177174170165158
32°F217209204200196193188183175
28°F238230224220215210205200194
24°F259250244240235231225219211
20°F280272265261255250244239231
16°F307297289282277272266259249

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
4,380
Cooling degree days, base 65°F
1,730
Growing degree days, base 40°F
7,188
Growing degree days, base 45°F
5,807
Growing degree days, base 50°F
4,573
Growing degree days, base 55°F
3,486
Growing degree days, base 60°F
2,541

Growing degree days by month, base 50°F

Heating and cooling by month

MonthHeating DDCooling DDGrowing DD 50
January93807
February755021
March5465103
April29228241
May91136514
June7341785
July1502966
August1449913
September37223637
October24243302
November571378
December90008

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 21.3 km from Laverne. 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 USC00343489 (Gate). Public domain.