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 20144
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

 

Summer 2014 June July August

Mean high, F

79 82 78

Mean low, F

52 55 53

Lowest temperature, F (date)

39 (1,21) 44 (11) 45 (20)

Highest temperature, F (date)

90 (28,29) 93 (1) 89 (25)

Number of days =/> 90 F

2 3 0

Number of days  =/<60 F

25 24 28

Number of days =/<50 F

12 11 9
largest degree day range (date) 44 (23) 43 (12) 40 (20)
soil (2in. depth)--high  79 na na
soil--low 52 na na
soil--average 66 na na


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