Record of Climatological Observations

Station:	BOSTON LOGAN INT'L ARPT
State:	MA	County:	SUFFOLK	Standard Time:	EASTERN

Record of Climatological Observations

These data are quality controlled and may not be identical to the original observations

Observation Time	Temperature:	2400	Precipitation:	2400
(LST)

P
r
e
l
i
m
i
n
a
r
y

Y
e
a
r

M
o
n
t
h

D
a
y

Temperature (°F)

Precipitation (see **)

Monthly Temperature (°F)

Monthly Precipitation

24 hrs. ending
at observation
time

at
O
b
s
e
r
v
a
t
i
o
n

Daily
Mean

Daily
CDD

Daily
HDD

24 Hour Amounts ending
at observation time

At Observation
Time

Mean
Temp

Mean
Max

Mean
Min

Highest
Temp

Lowest
Temp

Monthly
CDD

Monthly
HDD

Precip

Snowfall

Max.

Min.

Rain, melted
snow, etc.
(Inches &
hundredths)

F
l
a
g

Snow, ice pellets
(Inches &
tenths)

F
l
a
g

Snow, ice pellets,
hail, ice
on ground
(Inches)

2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000

01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31

50
54
64
63
49
36
45
38
51
56
55
43
32
16
18
41
17
22
21
22
19
14
22
32
35
32
22
19
33
47
38

27
34
43
40
22
18
31
30
34
39
41
32
13
7
1
14
0
3
7
13
4
2
7
20
24
21
7
5
12
18
30

39
44
54
52
36
27
38
34
43
48
48
38
23
12
10
28
9
13
14
18
12
8
15
26
30
27
15
12
23
33
34

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

26
21
11
13
29
38
27
31
22
17
17
27
42
53
55
37
56
52
51
47
53
57
50
39
35
38
50
53
42
32
31

0
0.03
0.03
0.76
0.23
0
0
0
0
0.74
T
0
0.10
0
0
T
0
0
T
T
0.02
0
0
0
0.49
0.01
T
0
0
0
0.21

0
0
0
0
0
0
0
0
0
0
0
0
9999.9
0
0
9999.9
0
0
T
9999.9
0.4
0
0
0
3.5
T
T
0
0
0
0.5

0
0
0
0
0
0
0
0
0
0
0
0
0
5
3
2
T
T
T
T
4
2
1
1
T
3
3
3
3
0
2

27.5

35.7

19.3

1152

2.62

4.4

2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000

02
02
02
02
02
02
02
02
02
02
02
02
02
02
02
02
02
02
02
02
02
02
02
02
02
02
02
02
02

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29

35
29
30
28
35
33
42
28
45
44
44
32
36
57
44
49
37
33
33
37
40
44
52
61
47
41
61
55
49

26
18
15
22
25
24
20
13
21
31
28
21
19
32
32
28
20
20
24
29
28
24
32
43
36
36
39
39
35

31
24
23
25
30
29
31
21
33
38
36
27
28
45
38
39
29
27
29
33
34
34
42
52
42
39
50
47
42

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

34
41
42
40
35
36
34
44
32
27
29
38
37
20
27
26
36
38
36
32
31
31
23
13
23
26
15
18
23

0
0
T
0.01
0.01
T
T
0
0
0
0.05
0
0
0.98
T
0.01
T
0.57
0.10
0.01
T
0
0
0.05
0.49
0.03
T
0.24
T

0
0
9999.9
9999.9
9999.9
T
T
0
0
0
0
0
0
0
0
9999.9
T
9999.9
9999.9
9999.9
T
0
0
0
0
0
0
0
0

2
2
2
2
2
2
2
1
1
T
T
T
T
0
0
0
T
0
7
8
6
4
3
T
T
T
0
0
0

34.2

41.4

26.9

887

2.55

2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000

03
03
03
03
03
03
03
03
03
03
03
03
03
03
03
03
03
03
03
03
03
03
03
03
03
03
03
03
03
03
03

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31

45
49
47
53
51
49
62
48
72
57
40
41
41
53
61
71
40
32
37
40
40
44
52
52
64
64
59
57
57
51
54

38
38
34
33
39
35
33
40
41
36
36
34
31
28
35
40
22
16
25
32
35
36
32
43
35
46
40
45
44
42
38

42
44
41
43
45
42
48
44
57
47
38
38
36
41
48
56
31
24
31
36
38
40
42
48
50
55
50
51
51
47
46

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

23
21
24
22
20
23
17
21
8
18
27
27
29
24
17
9
34
41
34
29
27
25
23
17
15
10
15
14
14
18
19

0
0.01
0
0
T
0
T
T
0.01
T
0.88
0.55
0
0
0
0.20
0.77
0
0
T
T
T
0
0
T
T
0
1.00
0.17
0
0

0
0
0
0
0
0
0
0
0
0
0
T
0
0
0
0
2.0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
T
2
T
0
0
0
0
0
0
0
0
0
0
0
0

43.3

51.1

35.5

665

3.59

2.0

2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000

04
04
04
04
04
04
04
04
04
04
04
04
04
04
04
04
04
04
04
04
04
04
04
04
04
04
04
04
04
04

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30

61
68
56
66
53
58
62
75
61
51
46
49
50
56
70
65
48
45
43
54
47
46
48
52
47
41
50
53
51
60

39
46
45
43
39
37
45
45
34
37
35
36
34
35
44
47
39
40
41
41
42
42
42
42
38
35
37
41
39
47

50
57
51
55
46
48
54
60
48
44
41
43
42
46
57
56
44
43
42
48
45
44
45
47
43
38
44
47
45
54

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

15
8
14
10
19
17
11
5
17
21
24
22
23
19
8
9
21
22
23
17
20
21
20
18
22
27
21
18
20
11

0
0
T
0.26
0
0.02
0
0.14
0.51
0
0.07
0.01
0
0
0
0.12
T
0.45
0.25
0.01
1.02
1.50
0.24
0
0
0.41
0.01
T
T
T

0
0
0
0
0
0
0
0
T
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
T
0
0
0
0

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

47.3

54.4

40.2

523

5.02

2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000

05
05
05
05
05
05
05
05
05
05
05
05
05
05
05
05
05
05
05
05
05
05
05
05
05
05
05
05
05
05
05

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31

65
65
59
69
81
69
91
86
65
50
66
67
59
70
63
67
65
71
63
54
53
56
57
66
72
72
74
61
57
58
72

42
46
43
44
55
50
50
56
47
46
44
50
49
50
49
47
53
54
43
44
49
47
47
50
49
55
55
52
47
46
45

54
56
51
57
68
60
71
71
56
48
55
59
54
60
56
57
59
63
53
49
51
52
52
58
61
64
65
57
52
52
59

0
0
0
0
3
0
6
6
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

11
9
14
8
0
5
0
0
9
17
10
6
11
5
9
8
6
2
12
16
14
13
13
7
4
1
0
8
13
13
6

0
0.17
0
T
T
0.01
0
0.05
0
0.61
0.02
0
0.26
0.09
0
0
0
0.14
0.37
T
0.01
0.06
0.31
0.71
0.07
0
0
T
0
0
0

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

57.2

65.9

48.5

250

2.88

2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000

06
06
06
06
06
06
06
06
06
06
06
06
06
06
06
06
06
06
06
06
06
06
06
06
06
06
06
06
06
06

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30

82
88
71
70
61
56
69
75
80
90
61
54
59
61
68
88
92
74
69
79
83
85
82
73
86
82
91
82
73
79

57
66
57
53
54
47
46
51
63
56
51
51
52
53
57
63
69
59
59
60
61
69
67
63
64
68
67
67
63
63

70
77
64
62
58
52
58
63
72
73
56
53
56
57
63
76
81
67
64
70
72
77
75
68
75
75
79
75
68
71

5
12
0
0
0
0
0
0
7
8
0
0
0
0
0
11
16
2
0
5
7
12
10
3
10
10
14
10
3
6

0
0
1
3
7
13
7
2
0
0
9
12
9
8
2
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0

0
0.52
0
T
0
4.00
0.24
0
T
0
0.49
0.20
0.07
0.05
0
0
0.22
0.26
T
0
0
0.03
0
0
0
0.04
0.39
T
0.10
T

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

67.3

75.4

59.2

151

6.61

2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000

07
07
07
07
07
07
07
07
07
07
07
07
07
07
07
07
07
07
07
07
07
07
07
07
07
07
07
07
07
07
07

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31

77
84
87
83
84
79
73
79
81
86
82
85
83
83
76
72
68
83
70
68
81
81
80
75
70
65
65
70
79
74
66

63
63
68
68
64
59
58
55
64
68
64
62
67
66
65
63
59
65
61
58
59
64
62
63
64
61
62
62
63
65
63

70
74
78
76
74
69
66
67
73
77
73
74
75
75
71
68
64
74
66
63
70
73
71
69
67
63
64
66
71
70
65

5
9
13
11
9
4
1
2
8
12
8
9
10
10
6
3
0
9
1
0
5
8
6
4
2
0
0
1
6
5
0

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
2
0
0
0
0
0
2
1
0
0
0
0

0
0
0
T
0
0
0.12
0
0.47
T
0
0
0
0
0.56
0.97
T
0.60
0
0
0.03
0.14
0
0
T
0.40
1.35
0.01
T
0.04
0.51

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

70.0

77.1

62.8

167

5.20

2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000

08
08
08
08
08
08
08
08
08
08
08
08
08
08
08
08
08
08
08
08
08
08
08
08
08
08
08
08
08
08
08

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31

66
73
82
81
78
81
89
87
88
85
76
72
71
66
71
80
74
71
75
72
75
78
75
78
77
79
85
72
72
75
86

63
64
69
67
65
64
68
75
71
70
67
64
61
62
63
65
60
56
62
58
56
59
61
63
63
62
63
62
58
58
67

65
69
76
74
72
73
79
81
80
78
72
68
66
64
67
73
67
64
69
65
66
69
68
71
70
71
74
67
65
67
77

0
4
11
9
7
8
14
16
15
13
7
3
1
0
2
8
2
0
4
0
1
4
3
6
5
6
9
2
0
2
12

0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0

0.06
T
0.07
T
0
0.01
0.01
0
T
0.08
0
0
0.11
0.41
0.01
0.91
0
0.13
0.05
0
0
0
0.37
0
0
0
0
0
0
0
0

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

70.3

77.1

63.4

174

2.22

2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000

09
09
09
09
09
09
09
09
09
09
09
09
09
09
09
09
09
09
09
09
09
09
09
09
09
09
09
09
09
09

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30

87
76
69
74
62
62
75
80
83
70
76
83
80
73
70
68
70
78
78
81
78
68
70
75
60
56
68
61
53
65

73
61
61
58
49
49
51
56
68
60
59
61
63
57
60
53
50
59
61
63
60
55
51
54
48
51
47
42
38
43

80
69
65
66
56
56
63
68
76
65
68
72
72
65
65
61
60
69
70
72
69
62
61
65
54
54
58
52
46
54

15
4
0
1
0
0
0
3
11
0
3
7
7
0
0
0
0
4
5
7
4
0
0
0
0
0
0
0
0
0

0
0
0
0
9
9
2
0
0
0
0
0
0
0
0
4
5
0
0
0
0
3
4
0
11
11
7
13
19
11

0
0.66
0
0.07
0
0
0
0
0
0
0
0
0.10
0
0.94
0
0
0
0.52
0.01
0.01
0
T
T
0
0.56
0
0
0
0

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

63.5

71.6

55.4

108

2.87

2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000

10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31

70
62
80
73
58
59
62
55
43
51
66
69
74
80
75
54
53
57
61
65
74
58
52
68
63
71
65
60
40
46
48

50
51
53
54
53
53
49
43
40
38
41
44
48
55
54
42
42
51
49
46
50
42
39
43
51
50
52
35
34
33
42

60
57
67
64
56
56
56
49
42
45
54
57
61
68
65
48
48
54
55
56
62
50
46
56
57
61
59
48
37
40
45

0
0
2
0
0
0
0
0
0
0
0
0
0
3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

5
8
0
1
9
9
9
16
23
20
11
8
4
0
0
17
17
11
10
9
3
15
19
9
8
4
6
17
28
25
20

0
0
0
0.10
0.33
0.30
0
0
T
0
0
0
0
0
0
0.26
T
1.03
0.05
0
0
0
0
0
0
0
0
0
T
0.56
0.23

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
T
T
0

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

53.9

61.7

46.0

341

2.86

2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000

11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30

56
63
60
66
49
52
59
53
52
50
53
56
47
51
49
48
54
46
45
45
42
37
35
30
35
49
52
50
49
42

41
45
46
46
42
41
41
46
44
47
47
45
42
46
39
39
38
34
35
30
33
30
25
19
17
32
43
43
40
36

49
54
53
56
46
47
50
50
48
49
50
51
45
49
44
44
46
40
40
38
38
34
30
25
26
41
48
47
45
39

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

16
11
12
9
19
18
15
15
17
16
15
14
20
16
21
21
19
25
25
27
27
31
35
40
39
24
17
18
20
26

0
0
0
T
0.68
T
0
0
0
1.46
0.26
0
T
0.71
0.01
0
0
0
0
T
0
0
0
0
0
1.22
T
0
0.02
0.15

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
T

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

43.8

49.2

38.4

628

4.51

2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000

12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31

41
31
35
44
48
32
33
22
31
34
41
54
29
41
35
44
64
40
39
33
32
32
30
32
28
27
32
24
33
39
32

28
22
19
25
26
22
22
16
17
17
32
24
18
27
23
30
39
30
28
25
22
25
17
22
10
8
21
18
19
21
25

35
27
27
35
37
27
28
19
24
26
37
39
24
34
29
37
52
35
34
29
27
29
24
27
19
18
27
21
26
30
29

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

30
38
38
30
28
38
37
46
41
39
28
26
41
31
36
28
13
30
31
36
38
36
41
38
46
47
38
44
39
35
36

0
0
0
0
0
0
0
T
0
T
0.06
0.02
0
0.80
0
0.11
2.67
0.01
0.21
0.18
0
T
0
T
0
0
0
T
0
0.61
T

0
0
0
0
0
0
0
9999.9
0
0.2
T
0
0
1.4
0
0
0
0
0
0.8
0
9999.9
0
T
0
0
0
T
0
T
9999.9

0
0
0
0
0
0
0
1
0
T
0
0
0
1
T
T
0
0
0
T
T
T
T
0
0
0
0
0
0
0
T

29.2

35.9

22.5

1103

4.67

2.4

The '*' flags in Preliminary indicate the data has not completed processing and quality control and may contain errors

All 9's (e.g. 999999, 99999.9, etc.) in the data column indicate that the value was not received or is missing

**T=TRACE. A=Accumulated amount since last measure. B=Accumulated amount includes estimated values. S=Included in a subsequent value. E=Estimated amount.