Veneta climate

Veneta Frost Dates and Growing Season

NOAA 1991-2020 normals for Fern Ridge-Veneta, 1.5 km from Veneta, elevation 485 ft

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Fern Ridge-Veneta. 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 18 and the first fall freeze around October 25, a growing season of about 189 days.

Median at 36°F
last May 5, first October 6
Median at 32°F
last April 18, first October 25
Median at 28°F
last March 16, first November 11

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 24May 16May 12May 9May 5May 3Apr 30Apr 27Apr 21
32°FMay 5Apr 30Apr 27Apr 22Apr 18Apr 14Apr 8Apr 1Mar 25
28°FApr 16Apr 5Mar 30Mar 23Mar 16Mar 8Mar 1Feb 25Feb 16
24°FMar 16Mar 5Feb 28Feb 23Feb 18Feb 13Feb 3Jan 22Jan 3
20°FFeb 27Feb 20Feb 13Feb 2Jan 23Jan 12Jan 2Dec 24Dec 10
16°FFeb 17Feb 9Feb 1Jan 18Jan 3Dec 29Dec 22Dec 14Dec 7

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 26Oct 1Oct 3Oct 6Oct 10Oct 14Oct 19Oct 26
32°FOct 6Oct 14Oct 18Oct 22Oct 25Oct 30Nov 2Nov 7Nov 12
28°FOct 22Oct 28Nov 2Nov 7Nov 11Nov 17Nov 21Nov 27Dec 5
24°FNov 4Nov 13Nov 21Nov 27Dec 1Dec 6Dec 15Dec 25Jan 6
20°FNov 19Dec 1Dec 8Dec 15Dec 24Dec 30Jan 8Jan 22Feb 9
16°FDec 4Dec 9Dec 14Dec 22Dec 28Jan 3Jan 18Feb 1Feb 13

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°F177169164159153149143138129
32°F219208200194189183177171163
28°F279265254246239230223214202
24°F332319308298289282271262246
20°F365365358347337327318309293
16°F365365365365365365361347334

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
99% of years
20°F or colder
75% of years
16°F or colder
30% 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
4,954
Cooling degree days, base 65°F
266
Growing degree days, base 40°F
4,699
Growing degree days, base 45°F
3,298
Growing degree days, base 50°F
2,181
Growing degree days, base 55°F
1,321
Growing degree days, base 60°F
682

Growing degree days by month, base 50°F

Heating and cooling by month

MonthHeating DDCooling DDGrowing DD 50
January79701
February63706
March591022
April440070
May2776204
June13928339
July35101532
August3095530
September13133354
October4061109
November648012
December82501

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 1.5 km from Veneta. 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 USC00352867 (Fern Ridge-Veneta). Public domain.