|
ELEMENT |
No. of Years |
JAN |
FEB |
MAR |
APR |
MAY |
JUN |
JUL |
AUG |
SEP |
OCT |
NOV |
DEC |
YEAR |
 |
Normal Daily
Maximum |
30 |
46.7 |
50.7 |
60.2 |
69.6 |
77 |
83.6 |
86.9 |
85.5 |
79.9 |
69.9 |
60.5 |
50.5 |
68.4 |
| Mean Daily Maximum |
54 |
47.9 |
51.8 |
59.9 |
70.2 |
77.6 |
84.3 |
87.5 |
85.8 |
79.8 |
70.2 |
59.9 |
50.4 |
68.8 |
| Highest Daily
Maximum |
73 |
78 |
81 |
90 |
94 |
98 |
102 |
102 |
103 |
100 |
95 |
85 |
78 |
103 |
| Year
of Occurrence |
|
1975 |
1977 |
1945 |
1930 |
1941 |
1954 |
1977 |
1988 |
1954 |
1954 |
1974 |
1998 |
Aug-88 |
| Mean of Extreme
Maxs |
54 |
67.7 |
70.4 |
78.7 |
85.8 |
89.2 |
94.2 |
95.5 |
94.4 |
91.1 |
83.7 |
76.1 |
68.8 |
83 |
| Normal Daily Minimum |
30 |
26.6 |
29.3 |
37.4 |
45.6 |
54.7 |
62.6 |
66.9 |
65.9 |
59.5 |
47.2 |
38.5 |
30.5 |
47.1 |
| Mean Daily
Minimum |
54 |
28 |
30.4 |
37 |
45.8 |
55 |
63.2 |
67.5 |
66.3 |
59.3 |
46.9 |
37.6 |
30.4 |
47.3 |
| Lowest Daily Minimum |
73 |
-8 |
-4 |
5 |
21 |
32 |
42 |
48 |
45 |
35 |
20 |
10 |
0 |
-8 |
|
Year of Occurrence |
|
1985 |
1936 |
1960 |
1943 |
1989 |
1977 |
1933 |
1986 |
1942 |
1962 |
1970 |
1962 |
Jan-85 |
| Mean of Extreme Mins |
54 |
10.1 |
14.1 |
20.6 |
29.8 |
40.3 |
51.1 |
58.2 |
56.2 |
44.7 |
31.5 |
21.7 |
13.6 |
32.7 |
| Normal Dry
Bulb |
30 |
36.7 |
40 |
48.8 |
57.6 |
65.9 |
73.1 |
76.9 |
75.7 |
69.7 |
58.6 |
49.5 |
40.5 |
57.8 |
| Mean Dry Bulb |
54 |
38 |
41.2 |
48.4 |
58 |
66.2 |
73.7 |
77.5 |
76.1 |
69.6 |
58.6 |
48.8 |
40.5 |
58 |
| Mean Wet
Bulb |
16 |
34 |
37.4 |
42.5 |
50.6 |
59.2 |
66.9 |
70.5 |
69.5 |
63.4 |
53.1 |
44.4 |
36.9 |
52.4 |
| Mean Dew Point |
16 |
26.2 |
29.2 |
33.7 |
42.9 |
54 |
62.7 |
67.2 |
66.3 |
59.8 |
47.9 |
38.1 |
29.6 |
46.5 |
| Normal
No. Days With: |
| Maximum
>=90 |
30 |
0 |
0 |
0 |
0.4 |
1.4 |
5.7 |
10.8 |
8.7 |
2.3 |
0.2 |
0 |
0 |
29.5 |
|
Maximum<=32 |
30 |
3 |
1 |
0.1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
* |
1.2 |
5.3 |
| Minimum
<=32 |
30 |
22.6 |
19.3 |
10 |
2.2 |
0.1 |
0 |
0 |
0 |
0 |
1.6 |
9.3 |
19.1 |
84.2 |
|
Minimum <= 0 |
30 |
0.1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
* |
0.1 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
 |
Normal Heating Deg Days |
30 |
877 |
700 |
502 |
235 |
78 |
6 |
0 |
0 |
16 |
226 |
465 |
760 |
3865 |
| Normal Cooling
Deg Days |
30 |
0 |
0 |
0 |
13 |
106 |
249 |
369 |
332 |
157 |
27 |
0 |
0 |
1253 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
 |
Normal (Percent) |
30 |
67 |
64 |
63 |
61 |
70 |
73 |
75 |
76 |
76 |
72 |
68 |
68 |
69 |
|
Hour 01 LST |
30 |
74 |
71 |
71 |
70 |
82 |
85 |
87 |
88 |
87 |
84 |
77 |
75 |
79 |
| Hour
07 LST |
30 |
79 |
77 |
78 |
77 |
83 |
85 |
88 |
90 |
90 |
87 |
83 |
79 |
83 |
|
Hour 13 LST |
30 |
56 |
53 |
50 |
47 |
54 |
56 |
59 |
60 |
58 |
54 |
53 |
56 |
55 |
| Hour
19 LST |
30 |
63 |
58 |
54 |
51 |
62 |
65 |
68 |
70 |
72 |
70 |
66 |
66 |
64 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
 |
Percent
Possible Sunshine |
67 |
51 |
56 |
60 |
63 |
63 |
64 |
62 |
61 |
62 |
64 |
57 |
53 |
60 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
 |
Mean No. Days With: |
|
Heavy Fog (Visby <=1/4 mi) |
74 |
4.7 |
3.3 |
2.8 |
1.6 |
1.9 |
1.4 |
1.8 |
2.3 |
3 |
2.5 |
3.2 |
3.9 |
32.4 |
| Thunderstorms |
74 |
0.5 |
0.7 |
2 |
3.4 |
6.7 |
8.3 |
10.4 |
7.9 |
3.3 |
1 |
0.5 |
0.3 |
45 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
 |
Mean: |
| Sunrise-Sunset (OKTAS) |
1 |
|
|
|
|
4 |
4 |
|
|
|
|
|
|
|
| Midnight-Midnight
(OKTAS) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Mean No. Days With: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Clear |
1 |
1 |
2 |
6 |
|
10 |
12 |
|
|
|
|
|
|
|
| Partly
Cloudy |
1 |
1 |
3 |
3 |
|
4 |
3 |
|
|
|
|
|
|
|
|
Cloudy |
1 |
3 |
4 |
8 |
|
6 |
4 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
 |
Mean Station Pressure
(in) |
28 |
29.2 |
29.1 |
29.1 |
29.1 |
29.09 |
29.1 |
29.1 |
29.1 |
29.18 |
29.2 |
29.19 |
29.19 |
29.14 |
| Mean Sea-level
Pressure (in) |
17 |
30.12 |
30.11 |
30.05 |
29.99 |
30.01 |
30 |
30.04 |
30.05 |
30.07 |
30.12 |
30.15 |
30.15 |
30.07 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
 |
Mean Speed (mph) |
48 |
8.1 |
8.5 |
9 |
8.9 |
7.5 |
6.9 |
6.5 |
6.2 |
6.6 |
7 |
7.4 |
7.5 |
7.5 |
| Direction
from which wind blows |
320 |
210 |
220 |
210 |
210 |
220 |
230 |
220 |
230 |
30 |
30 |
210 |
210 |
210 |
| Maximum 2-Minute: |
|
Speed (mph) |
6 |
41 |
38 |
49 |
37 |
62 |
40 |
33 |
30 |
46 |
31 |
36 |
34 |
62 |
| Direction
from which wind blows |
|
190 |
70 |
300 | 300 |
270 |
310 |
90 |
190 |
260 |
90 |
260 |
240 |
270 |
|
Year of Occurrence |
|
1996 |
1998 |
1997 |
2001 |
2000 |
1998 |
1997 |
2000 |
2000 |
1996 |
1996 |
2000 |
May-00 |
| Maximum 5-second |
|
Speed (mph) |
6 |
54 |
47 |
58 |
47 |
82 |
49 |
44 |
41 |
60 |
39 |
45 |
47 |
82 |
| Direction from which wind blows |
|
220 |
320 |
310 |
250 |
260 |
310 |
90 |
170 |
250 |
280 |
240 |
240 |
260 |
|
Year of Occurrence |
|
1996 |
1998 |
1997 |
1996 |
2000 |
1998 |
1997 |
1997 |
2000 |
2001 |
1996 |
2000 |
May-00 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
 |
Normal (in) |
30 |
3.17 |
3.32 |
3.72 |
2.84 |
4.02 |
3.81 |
4.51 |
3.88 |
3.52 |
3.5 |
2.97 |
3.36 |
42.62 |
| Maximum Monthly
(in) |
73 |
8.24 |
7.04 |
8.76 |
8.03 |
8.35 |
9.53 |
12.72 |
12.53 |
13.26 |
12.59 |
8.26 |
6.44 |
13.26 |
| Year
of Occurrence |
|
1937 |
1929 |
1975 |
1987 |
1982 |
1995 |
1984 |
1939 |
1947 |
1990 |
1985 |
1973 |
Sep-47 |
| Minimum Monthly
(in) |
73 |
0.66 |
0.73 |
0.67 |
0.41 |
0.37 |
T |
0.98 |
0.71 |
T |
0.26 |
0.34 |
0.33 |
T |
| Year
of Occurrence |
|
1981 |
1978 |
1985 |
1995 |
1936 |
1990 |
1953 |
1972 |
1985 |
2000 |
2001 |
1955 |
Jun-90 |
| Maximum in
24 Hours (in) |
73 |
3.06 |
3 |
3.62 |
4.42 |
3.25 |
4.91 |
4.43 |
4.6 |
7.49 |
6.24 |
3.32 |
3.6 |
7.49 |
| Year
of Occurrence |
|
1936 |
1934 |
1991 |
1987 |
1989 |
1972 |
1944 |
1995 |
1947 |
1954 |
1962 |
1958 |
Sep-47 |
| Normal
No. Days With: |
| Precipitation
>=0.01 |
30 |
10 |
9.4 |
10.7 |
9.2 |
10.6 |
9.9 |
11.5 |
9.9 |
7.2 |
6.9 |
8 |
9.4 |
112.7 |
|
Precipitation >=1.00 |
30 |
0.5 |
0.7 |
0.7 |
0.6 |
1 |
0.9 |
1.1 |
1.1 |
1.2 |
1.1 |
0.7 |
0.9 |
10.5 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
 |
Normal (in) |
30 |
4 |
3.2 |
1.8 |
T |
0 |
0 |
0 |
0 |
0 |
0 |
0.2 |
1 |
10.2 |
| Maximum Monthly
(in) |
73 |
22.9 |
16.3 |
21.3 |
T |
T |
0 |
T |
0 |
0 |
0 |
5.9 |
14.3 |
22.9 |
| Year
of Occurrence |
|
1966 |
1979 |
1960 |
1993 |
1993 |
|
1995 |
|
|
|
1968 |
1930 |
Jan-66 |
| Maximum in
24 Hours (in) |
73 |
14 |
9.3 |
11.1 |
T |
T |
0 |
T |
0 |
0 |
0 |
5 |
14.3 |
14.3 |
| Year
of Occurrence |
|
1940 |
1979 |
1960 |
1993 |
1993 |
|
1995 |
|
|
|
1968 |
1930 |
Dec-30 |
| Maximum Snow
Depth (in) |
53 |
15 |
13 |
14 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
4 |
6 |
15 |
| Year
of Occurrence |
|
1966 |
1966 |
1960 |
|
|
|
|
|
|
|
1968 |
1973 |
Jan-66 |
| Normal
No. Days With: |
| Snowfall
>= 1.0 |
30 |
1 |
1.1 |
0.5 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0.1 |
0.4 |
3.1 |