Eagle Bend climate

Eagle Bend Frost Dates and Growing Season

NOAA 1991-2020 normals for Long Prairie, 25.1 km from Eagle Bend, elevation 1340 ft

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Long Prairie. 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 13 and the first fall freeze around September 27, a growing season of about 134 days.

Median at 36°F
last May 25, first September 17
Median at 32°F
last May 13, first September 27
Median at 28°F
last May 4, first October 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°FJun 6Jun 2May 30May 28May 25May 23May 20May 16May 11
32°FMay 28May 23May 19May 16May 13May 10May 8May 5May 1
28°FMay 17May 13May 9May 6May 4May 2Apr 30Apr 27Apr 23
24°FMay 8May 4May 1Apr 29Apr 26Apr 23Apr 20Apr 16Apr 11
20°FApr 30Apr 25Apr 21Apr 19Apr 16Apr 13Apr 11Apr 6Apr 2
16°FApr 21Apr 17Apr 13Apr 10Apr 7Apr 4Apr 2Mar 31Mar 24

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 3Sep 9Sep 12Sep 15Sep 17Sep 20Sep 23Sep 26Oct 1
32°FSep 13Sep 18Sep 21Sep 24Sep 27Sep 30Oct 2Oct 5Oct 10
28°FSep 22Sep 26Sep 30Oct 3Oct 5Oct 8Oct 12Oct 16Oct 21
24°FOct 1Oct 6Oct 10Oct 14Oct 18Oct 21Oct 23Oct 27Nov 1
20°FOct 12Oct 18Oct 22Oct 25Oct 28Oct 31Nov 2Nov 5Nov 9
16°FOct 22Oct 27Oct 31Nov 1Nov 4Nov 6Nov 8Nov 12Nov 17

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°F13512812311911511110710194
32°F152146142138134131126120114
28°F172166161157153149144140132
24°F194186180176172169164159154
20°F212206200196192189185180173
16°F230223218214210206202198191

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
9,333
Cooling degree days, base 65°F
313
Growing degree days, base 40°F
3,659
Growing degree days, base 45°F
2,748
Growing degree days, base 50°F
1,952
Growing degree days, base 55°F
1,270
Growing degree days, base 60°F
713

Growing degree days by month, base 50°F

Heating and cooling by month

MonthHeating DDCooling DDGrowing DD 50
January1,75100
February1,46200
March1,22102
April758125
May38613167
June10363413
July35121552
August6389491
September25625247
October662152
November1,09404
December1,54400

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 25.1 km from Eagle Bend. 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 USC00214861 (Long Prairie). Public domain.