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December |
2008 |
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Times indicate the end of a measurement period
(BST) |
| Maximum Temperature |
17.4 |
ēC |
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22-Dec-08 |
11:30 AM |
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| Minimum Temperature |
-3.7 |
ēC |
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16-Dec-08 |
5:45 AM |
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| Mean (15 min) |
4.6 |
ēC |
-1.2 |
from average |
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| Mean (Max Min) |
4.8 |
ēC |
-1.0 |
from average
(calculated from 0901 to 0900 GMT data) |
| Mean Max |
9.0 |
ēC |
0.5 |
from average
(calculated from 0901 to 0900 GMT data) |
| Mean Min |
0.7 |
ēC |
-2.3 |
from average
(calculated from 0901 to 0900 GMT data) |
| Lowest Max |
3.5 |
ēC |
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29-Dec-08 |
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| Highest Min |
9.5 |
ēC |
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21-Dec-08 |
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| Air Frosts |
17 |
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128 |
hours of Frost duration |
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| Maximum Station Pressure |
1036 |
hPa |
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22-Dec-08 |
6:00 AM |
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| Minimum Station Pressure |
980 |
hPa |
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05-Dec-08 |
5:30 AM |
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| Mean |
1018.1 |
hPa |
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| Mean of 09Z values |
1018.8 |
hPa |
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| Rainfall |
70.2 |
mm |
43.9% |
of average |
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| Wettest 24hr |
38.1 |
mm |
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13-Dec-08 |
6:15 AM |
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| Wettest Calendar Day |
38.1 |
mm |
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12-Dec-08 |
(calculated from 0901 to 0900 following day) |
| Rain Days ( > 0.3mm) |
12 |
days |
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|
(calculated from 0901 to 0900 GMT data) |
| Wet Days (>1.0mm) |
7 |
days |
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|
(calculated from 0901 to 0900 GMT data) |
| Wet Days (>5.0mm) |
4 |
days |
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(calculated from 0901 to 0900 GMT data) |
| Max 15min accum |
4.5 |
mm |
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13-Dec-08 |
3:15 AM |
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| Rain Duration |
32.75 |
hours |
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| Longest Dry period |
15.55 |
days |
|
01-Jan-09 |
10:30 AM |
373.25 |
(hours) |
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| Longest Wet period
(>0.3mm / 15 mins) |
10.75 |
hours |
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13-Dec-08 |
4:00 AM |
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| Sunshine Hours
(>30klux) |
27.75 |
hours |
55.5% |
of average |
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| Max Sunshine |
3.00 |
hours |
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03-Dec-08 |
(calculated from 0901 to 0900 following day) |
| Sunshine Hours (>50%) |
61 |
hours |
122.0% |
of average |
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| Max Sunshine |
4.00 |
hours |
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03-Dec-08 |
(calculated from 0901 to 0900 following day) |
| Brightest Calendar Day |
5.8 |
klux |
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02-Dec-08 |
(calculated from 0901 to 0900 following day) |
| Sunless Days |
11 |
days |
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(calculated from 0901 to 0900 GMT data) |
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| Maximum Brightness (klux) |
44.1 |
klux |
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10-Dec-08 |
1:00 PM |
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| Average Wind Speed |
#DIV/0! |
knots |
|
#DIV/0! |
mph |
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| Maximum Wind Speed |
0 |
knots |
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#N/A |
#N/A |
0.0 |
mph |
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| Days with wind from: |
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(calculated from 0901 to 0900 GMT data) |
| Calm |
31 |
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| N |
0 |
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| NE |
0 |
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| E |
0 |
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| SE |
0 |
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| S |
0 |
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| SW |
0 |
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| W |
0 |
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| NW |
0 |
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| Average RH (at 09Z) |
81.2 |
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