University of Vermont Extension
Department of Plant and Soil Science


Vermont Hardiness Map                  OH 53

Leonard Perry, Extension Professor

The hardiness map below is an enlarged portion of the USDA hardiness map, generated by Meteorological Evaluation Services of Amityville, NY. It was generated from the 1974-1986 data of the stations listed below having at least 10 years of data, as well as stations outside Vermont. This time period was the most recent prior to publication for which reliable data were available, giving 10 years for most sites. As can be seen, many sites have become colder over this period compared to the period of the previous USDA map, believed to be about 1930-1960. This recent period of cold extremes is verified by reports of freeze damage to plants which had not occurred during the earlier period. As with any hardiness zones, they are only a starting point in plant selection and hardiness considerations. (See OH 54 for a further discussion of hardiness).

 
Notes: lat=latitude, long=longitude, elev=elevation in feet above sea level, ---no data, msg=not enough data for 10 year average.
            Annual Minimum Extreme Temperatures in Degrees Fahrenheit
Station Name lat long elev Extreme Minimums avg
  deg min deg min ft 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 74-86
Ball Mountain Lake 43 07 072 48 1130 -21 -20 -26 --- -21 -25 -19 -23 -20 -23 -25 -8 -14 -20.4
Bellows Falls 43 08 072 27 270 -10 -11 -19 -15 -11 -17 -21 -20 -20 -11 -22 -10 -12 -15.3
Bristol 5 NNW 44 12 073 07 500 -23 -19 -25 -29 -18 -28 -30 --- --- --- --- --- --- msg
Burlington WSO AP 44 28 073 09 330 -24 -16 -24 -20 -19 -30 -26 -27 -17 -20 -17 -15 -14 -20.6
Cavendish 43 23 072 36 800 -25 -23 -31 -24 -25 -32 -25 -26 -28 -23 -30 -16 -20 -25.2
Chelsea 43 59 072 27 800 -26 -25 -31 -28 -24 -34 -32 -31 -29 -26 -30 -24 -20 -27.6
Cornwall 43 57 073 13 490 -26 -14 -25 -29 -18 -29 -23 -28 -19 -16 -13 -11 -15 -20.4
Dorset 1 S 43 15 073 06 980 -23 -17 -23 -15 -18 -30 -27 -22 --- --- --- --- --- msg
Enosburg Falls 44 55 072 49 420 -35 -31 -34 -30 -32 -38 -37 -41 -33 -31 -26 -30 -24 -32.4
Essex Junction 1 N 44 31 073 07 340 --- --- --- --- --- --- --- --- --- --- --- --- -22 msg
Montpelier FAA AP 44 12 072 34 1130 -22 -14 -19 -20 -21 -25 -27 -34 -18 -22 -23 -19 -13 -21.3
Morrisville 2 44 32 072 36 730 -32 --- --- -23 -27 -30 -33 --- --- --- --- --- --- msg
Mount Mansfield 44 32 072 49 3950 -23 --- --- -35 -24 -30 -38 -37 -28 -36 -25 -24 -27 -29.7
Newport 44 56 072 12 770 -33 -24 -31 -24 -28 -30 -28 -31 -27 -26 -24 -27 -23 -27.3
North Danville 44 28 072 07 1140 -28 -23 -24 -19 -22 --- --- --- --- --- --- --- --- msg
Northfield 44 10 072 39 670 --- --- --- --- --- --- --- --- --- --- --- --- --- msg
Northfield 3 SSE 44 06 072 37 1410 --- -25 -24 -22 -23 -27 -31 -35 -25 -20 -20 -22 -15 -24.0
Readsboro 1 SE 42 45 072 56 1120 -14 -15 -21 -14 -16 -25 -20 -21 -18 -12 -25 -7 -10 -16.7
Rochester 43 51 072 48 830 -25 -26 -30 -18 -23 -28 -30 -25 -25 -20 -28 -15 -14 -23.6
Rutland 43 36 072 58 620 -21 -14 -19 -16 -14 -26 -23 -23 -17 -16 -18 -8 -16 -17.7
St. Albans Bay 44 48 073 10 110 -29 -15 --- --- --- --- --- --- --- --- --- --- --- msg
Saint Albans Radio 44 50 073 05 390 --- --- --- --- -14 -26 -25 -31 -20 -22 -16 -19 -15 msg
Saint Johnsbury 44 25 072 01 700 -28 -21 -29 -25 -24 -32 -31 -31 -27 -21 -28 -23 -25 -26.5
South Hero 44 38 073 18 1100 --- -10 -18 --- -12 -20 -22 -26 -15 -14 -12 -12 -15 -16.0
South Lincoln 44 04 072 58 2020 --- --- --- --- --- --- --- --- -22 -21 -23 -19 -20 msg
Vernon 42 46 072 31 230 -12 -15 -18 -15 -12 -18 -20 -17 -18 -10 -22 -9 -11 -15.1
Waterbury 2 SSE 44 19 072 45 760 -25 -22 -26 -19 -23 -26 -26 -27 -22 -21 -23 -17 -13 -22.3
West Burke 44 39 071 59 900 -32 -27 -33 -30 -29 -37 -35 -38 -31 -25 -32 -29 -25 -31.0
Woodstock 2 WSW 43 37 072 33 750 -24 -27 -35 -24 -22 -37 -30 -24 -27 -26 -28 -16 -20 -26.1
 


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Issued in furtherance of Cooperative Extension work, Acts of May 8 and June 30, 1914, in cooperation with the United States Department of Agriculture. Lawrence Forcier, Director, UVM Extension System, Burlington, Vermont. University of Vermont Extension System and U.S. Department of Agriculture cooperating, offer education and employment to everyone, without regard to race, color, national origin, sex, religion, age, disability, political beliefs, and marital or familial status.

Last reviewed 2003