Woodlake climate

Woodlake Frost Dates and Growing Season

NOAA 1991-2020 normals for Amelia Courthouse, 27.7 km from Woodlake, elevation 345 ft

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Amelia Courthouse. 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 7 and the first fall freeze around November 2, a growing season of about 209 days.

Median at 36°F
last April 19, first October 24
Median at 32°F
last April 7, first November 2
Median at 28°F
last March 26, first November 12

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 4Apr 30Apr 25Apr 22Apr 19Apr 16Apr 14Apr 9Apr 4
32°FApr 21Apr 16Apr 13Apr 10Apr 7Apr 3Mar 31Mar 28Mar 21
28°FApr 9Apr 4Mar 31Mar 29Mar 26Mar 22Mar 18Mar 13Mar 6
24°FMar 31Mar 25Mar 21Mar 18Mar 14Mar 10Mar 6Feb 28Feb 23
20°FMar 21Mar 16Mar 10Mar 6Mar 2Feb 27Feb 21Feb 16Feb 6
16°FMar 12Mar 4Feb 28Feb 21Feb 14Feb 8Feb 3Jan 27Jan 17

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 11Oct 16Oct 19Oct 22Oct 24Oct 27Oct 30Nov 1Nov 5
32°FOct 20Oct 25Oct 29Nov 1Nov 2Nov 4Nov 7Nov 11Nov 16
28°FNov 1Nov 3Nov 6Nov 10Nov 12Nov 16Nov 20Nov 24Dec 1
24°FNov 9Nov 14Nov 18Nov 23Nov 27Dec 1Dec 4Dec 9Dec 18
20°FNov 20Nov 29Dec 2Dec 6Dec 11Dec 17Dec 23Dec 29Jan 6
16°FDec 4Dec 12Dec 19Dec 25Dec 30Jan 3Jan 9Jan 16Jan 28

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°F206200195191187183179173164
32°F231223218213209206202197189
28°F257248243239234229225219213
24°F287276269263258254248242234
20°F317303297291285278271265256
16°F344332324318310305299292282

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
97% 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
3,848
Cooling degree days, base 65°F
1,466
Growing degree days, base 40°F
7,150
Growing degree days, base 45°F
5,693
Growing degree days, base 50°F
4,398
Growing degree days, base 55°F
3,257
Growing degree days, base 60°F
2,283

Growing degree days by month, base 50°F

Heating and cooling by month

MonthHeating DDCooling DDGrowing DD 50
January832020
February683023
March539596
April24134270
May83117500
June10293733
July0420885
August1363828
September31191611
October21638302
November478399
December734132

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 27.7 km from Woodlake. 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 USC00440187 (Amelia Courthouse). Public domain.