Perry's Perennial Pages

Yearly Climate Summary

Milton, Vermont Perennial Trials, USDA zone 4b

Dr. Leonard Perry, Extension Professor, University of Vermont


 (begun Spring 2010)

2010

20114 20124 20134
Winter

Lowest temperature, F

na

-22 -20 -22

Lowest temperature date

na

1/24 1/16 1/3

Number of days =/<-10 F

na

5 2 4
Number of days =/<-20 F na 1 1 1

Last spring frost date (=/<32F)

5/17

4/20 5/18 5/27

First killing frost date (=/<28F)

10/12

10/7 10/13 10/29

Frost-free season, days

146

170 148 155

1Annual snowfall, inches

107

112 30 82
Snowfall above/below average +34 +39 (43) +9
Summer

Mean summer high, F

80

84 85 80

Mean summer low, F

58

54 52 55

Highest temperature, F

103

100 101 98

Highest temperature date

7/7

7/22 6/21 7/17

2Number of days =/> 90 F

18 (20%)

24 (25%) 28 (30%) 12 (13%)

2Number of days =/<60 F

51 (55%)

79 (86%) 75 (82%) 60 (65%)

2Number of days  =/<50 F

14 (15%)

27 (29%) 34 (37%) 27 (29%)
Yearly

1Annual precipitation, inches

41

51 33 45
Precip. above/below average +3 +13 (4) +11

1Burlington NWS,  rainfall Jan-Dec, snowfall Jul-Jun

2Summer= Jun, Jul, Aug; 92 days total

 

 

Summer 2011  June July August

Mean high, F

80 89 83

Mean low, F

52 55 54

Lowest temperature, F

40 46 45

Highest temperature, F

96 100 95

Number of days =/> 90 F

4 16 4

Number of days  =/<60 F

28 24 27

Number of days  =/<50 F

11 8 8
largest degree day range (date) 48 (6/7) 47 (7/16) 43 (8/5)
soil (2in. depth)--high 77 81 77
soil--low 56 60 58
soil--average 67 70 67

 

Summer 2012  June July August

Mean high, F

80 88 87

Mean low, F

51 53 53

Lowest temperature, F

40 (14,15) 40 (20) 38 (19)

Highest temperature, F

101 (21) 100 (14) 99 (4)

Number of days =/> 90 F

7 13 8

Number of days =/<60 F

24 25 26

Number of days =/<50 F

15 10 9
largest degree day range (date) 48 (24) 51 (12) 47 (22)
soil (2in. depth)--high 80 79 73
soil--low 55 59 58
soil--average 67 71 68

 

Summer 2013  June July August

Mean high, F

73 85 82

Mean low, F

55 58 53

Lowest temperature, F (date)

35 (20) 39 (25) 41 (24)

Highest temperature, F (date)

92 (1) 98 (17) 91 (21,22)

Number of days =/> 90 F

1 7 4

Number of days  =/>60 F

22 16 22

Number of days =/>50 F

10 6 11
largest degree day range (date) 40 (20) 43 (27) 42 (6,24)
soil (2in. depth)--high  70 na na
soil--low 53 na na
soil--average 61 na na

 



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