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| Monthly
Climate Summary for December 2011 at Luton (Cranleigh Gardens) |
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home |
daily |
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| An unsettled month with frequent rain;
rather cold third week then much milder |
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back |
forward |
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| Overall mean
temperature was |
5.6 |
ēC |
which is |
+0.7 |
degC |
compared with the 1971-2000 average |
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| Mean day
maximum (09-21) was |
7.8 |
ēC |
which is |
+0.7 |
degC |
compared with the 1971-2000 average |
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| Mean night
minimum (21-09) was |
3.5 |
ēC |
which is |
+0.8 |
degC |
compared with the 1971-2000 average |
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| Mean 24hr
maximum (09-09) was |
8.4 |
ēC |
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| Mean 24hr
minimum (09-09) was |
2.8 |
ēC |
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Highest day max was |
12.4 |
ēC |
on
the |
26 |
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Lowest day max was |
3.2 |
ēC |
on the |
18 |
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Highest night min was |
10.4 |
ēC |
on the |
26 |
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Lowest night min was |
-3.4 |
ēC |
on the |
19 |
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Lowest grass min was |
-8.1 |
ēC |
on the |
19 |
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| Total rainfall
this month was |
83.0 |
mm |
which is |
122.6 |
per cent |
of the 1971-2000 average |
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Highest daily fall was |
16.9 |
mm |
on the |
12 |
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| Number of
hours with rain was |
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| Equiv. TSR
rainfall duration was |
78.4 |
hrs |
which is |
126.0 |
per cent |
of the 1971-2000 average |
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Highest no of wet hrs |
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hrs |
on the |
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Highest duration |
12.5 |
hrs |
on the |
15 |
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Mean rainfall intensity |
1.06 |
mm/hr |
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| Total CS
sunshine this month was |
40.9 |
hrs |
which is |
84.3 |
per cent |
of the 1971-2000 average |
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| Equiv. C/S sunshine total was |
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hrs |
which is |
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per cent |
of the 1971-2000 average |
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Highest daily sun was |
6.2 |
hrs |
on the |
9 |
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| Maximum snow depth
was |
4.0 |
cm |
on
the |
22 |
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| Mean sea-level
pressure at 09Z |
1012.6 |
mbar |
which is |
-2.0 |
mbar |
compared with the 1961-1990 average |
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Highest pressure at 09Z |
1035.2 |
mbar |
on the |
27 |
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Lowest
pressure at 09Z |
985.9 |
mbar |
on the |
16 |
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| Number of days
with: |
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| Air Frost |
4 |
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0.2mm rain |
21 |
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No sun |
12 |
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Snow lying |
1 |
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| Grnd Frost |
18 |
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1.0mm |
14 |
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3h sun |
5 |
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Snow/sleet |
2 |
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| Max < 0ēC |
0 |
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5mm |
5 |
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6h sun |
2 |
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Hail |
0 |
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| Max > 10 |
9 |
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10mm |
2 |
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9h sun |
0 |
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Thunder |
0 |
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| Max > 20 |
0 |
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25mm |
0 |
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12h sun |
0 |
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Fog at 09Z |
0 |
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| Max > 30 |
0 |
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15h sun |
0 |
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Gale |
0 |
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| Notable events
during the month: |
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