This
page contains the December 2004 monthly stats and daily summaries for
my own site readings.
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DECEMBER
2004
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December 2004 was slightly milder and drier than average.
There were 17 consecutive days from the 29th November to 15th December
without measurable rainfall, the longest dry spell at this time of year
since 1991 (18 days). The first half of the month saw the continued persistence
of high pressure to the SE; with the consequences of no rainfall, light
winds, little sunshine and a great deal of anticyclonic gloom. The first
air-frost of this autumn/winter was recorded on the 11th - the first sub-zero
here since the 3rd March. Visibility was poor to moderate with frequent
haze or mist and occasional dense fog.The second half of the month begins
with the return of Atlantic weather systems pushing across the country,
and a vigorous depression brings gales and the first heavy rainfall since
the 18th November. A further deep depression brought wind, rain and mild
conditions on the 22nd, but although it turned colder on the night of
the 24th, there was no "white Christmas" with cool, bright and
dry weather prevailing. There was a heavy ground frost on Boxing Day morning
and the weather turned from cool to very mild at the end of the month.
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DECEMBER 2004 - MONTHLY SUMMARY | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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DECEMBER
2004
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TEMPERATURE ºc
|
HUMIDITY
|
RAINFALL
|
WIND SPEED
|
WIND DIRECTION
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DATE
|
Minimum
(< 09:00h) |
Maximum
(< 21:00h) |
RH
%
at 14.00 |
Dewpoint
ºc
at 14.00 |
Day
Total
(mm) |
Average
(mph) |
High
Gust
(mph) |
Dominant
(Compass) |
1st
|
0.9
|
6.0
|
77
|
2.2
|
0.0
|
0.2
|
6.0
|
N
|
2nd
|
2.8
|
6.0
|
83
|
3.3
|
0.0
|
0.3
|
6.0
|
N
|
3rd
|
1.3
|
4.4
|
88
|
2.0
|
0.0
|
0.5
|
7.0
|
WNW
|
4th
|
1.6
|
9.5
|
84
|
6.5
|
0.0
|
0.1
|
5.0
|
WSW
|
5th
|
6.9
|
11.0
|
80
|
7.7
|
0.0
|
0.5
|
7.0
|
SSW
|
6th
|
4.5
|
11.4
|
65
|
4.8
|
0.0
|
0.8
|
13.0
|
SW
|
7th
|
0.6
|
9.3
|
81
|
5.9
|
0.0
|
0.0
|
3.0
|
NNW
|
8th
|
7.4
|
8.9
|
88
|
7.0
|
0.0
|
0.1
|
6.0
|
SE
|
9th
|
3.0
|
8.9
|
74
|
4.1
|
0.0
|
0.3
|
8.0
|
SE
|
10th
|
3.4
|
6.9
|
75
|
2.8
|
0.0
|
0.6
|
8.0
|
SW
|
11th
|
-1.7
|
5.7
|
90
|
2.3
|
0.0
|
0.1
|
8.0
|
WNW
|
12th
|
4.8
|
5.5
|
82
|
1.7
|
0.0
|
1.0
|
11.0
|
SE
|
13th
|
1.1
|
3.1
|
82
|
2.0
|
0.0
|
0.4
|
6.0
|
SE
|
14th
|
2.5
|
9.2
|
86
|
6.7
|
0.0
|
1.6
|
12.0
|
SW
|
15th
|
8.9
|
11.1
|
85
|
8.7
|
0.0
|
2.9
|
19.0
|
SW
|
16th
|
9.2
|
10.9
|
83
|
6.8
|
1.8
|
4.2
|
25.0
|
SW
|
17th
|
6.6
|
7.4
|
88
|
3.7
|
17.3
|
4.9
|
25.0
|
N
|
18th
|
2.5
|
7.6
|
75
|
3.4
|
5.3
|
1.8
|
12.0
|
SW
|
19th
|
4.1
|
5.3
|
67
|
-0.8
|
4.6
|
1.4
|
18.0
|
N
|
20th
|
-2.2
|
5.9
|
54
|
-3.1
|
0.3
|
0.9
|
13.0
|
SW
|
21st
|
1.5
|
3.5
|
90
|
0.9
|
0.0
|
0.8
|
11.0
|
N
|
22nd
|
2.1
|
11.1
|
91
|
8.1
|
6.9
|
3.9
|
21.0
|
SW
|
23rd
|
10.6
|
12.4
|
70
|
6.9
|
0.0
|
4.6
|
22.0
|
WNW
|
24th
|
8.1
|
10.4
|
79
|
6.9
|
5.1
|
4.9
|
26.0
|
SW
|
25th
|
1.9
|
4.4
|
72
|
-0.2
|
0.0
|
1.4
|
12.0
|
SSW
|
26th
|
-1.8
|
3.9
|
69
|
-1.3
|
0.0
|
0.8
|
12.0
|
N
|
27th
|
-1.2
|
5.1
|
77
|
0.8
|
0.5
|
1.3
|
14.0
|
SW
|
28th
|
3.2
|
6.3
|
64
|
0.0
|
8.9
|
3.6
|
20.0
|
N
|
29th
|
2.8
|
8.6
|
74
|
3.0
|
0.0
|
1.9
|
12.0
|
SW
|
30th
|
7.1
|
12.2
|
68
|
6.3
|
0.0
|
2.6
|
14.0
|
SW
|
31st
|
7.9
|
11.7
|
75
|
7.4
|
0.0
|
2.7
|
17.0
|
SW
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'WIND ROSE' PLOT FOR THE MONTH
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![]() |
The 'petals' represent wind direction and the length
represents frequency, i.e. in this case winds from the SW were the most
common, followed by the SSW. The colours represent the strength of the wind, with black being weakest through dark and medium blue then lighter colours (cyan, light green, yellow, magenta, red) being stronger |