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Old 12-31-2009, 06:02 PM
 
Location: Subarctic Mountain Climate in England
2,918 posts, read 3,022,151 times
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I'll start. Let's see what December gave you where you were.

Buxton, Derbyshire, England
December 2009 Records
Latitude 53*N Longitude 1.5*W Elevation 338m/1110ft AMSL


Valid 1st- 31st December, 2009


Mean Maximum: 3.2°C / 37.7°F
Mean Minimum: -0.6°C / 30.9°F
Mean Temperature: 1.3°C / 34.3°F
Highest Temperature: 10.2°C / 50.4°F (6th)
Lowest Temperature: -9.8°C / 14.4°F (22nd)
---------------------
Lowest Maximum: -1.3°C / 29.7°F (18th)
Highest Minimum: 9°C / 48°F (6th)
---------------------
Precipitation: 106mm/4.17"
Days with rain >1mm: 11
Days with rain: 17
Most in one day: 16mm/0.63" (3rd)
---------------------
Mean Pressure: 1003.9mb
Max Pressure: 1034mb (11th)
Min Pressure: 982mb (22nd)
---------------------
Sunshine hours: 34.66
Most in one day: 3.21hrs (23rd)
Average per day: 1.12hrs
Sunless days: 15
% Max Poss: 13.9%
---------------------
Days with Sleet/Snow: 9
Days with Hail/Ice Pellets: 0
Days with Thunder heard/reported: 0
Days with Fog: 4
Days below freezing: 14
Ice days (below freezing all day): 4
---------------------
Indoor Temperatures Data (computer room)
Average Max: 22.2°C / 72°F
Average Min: 16.2°C / 61.2°F
Mean: 19.2°C / 66.6°F
Max: 23.8°C / 74.8°F
Min: 14.2°C / 57.6°F
Average daily heating power required in room: 4.12KW

Notes:

1) The month's low of -10°C on 22nd was the lowest temperature recorded in nearly a decade.
2) A run of 9 nights below freezing from 17th-25th including 4 "ice days".
3) With its average temperature below 1.5°C this month is the coldest I have personally witnessed for a given location I've been in.
4) It did not get above 3°C / 38°F from 17th through to the end of the month. There was lying snow throughout this period.
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Old 12-31-2009, 07:14 PM
 
Location: Newcastle NSW Australia
1,492 posts, read 2,733,088 times
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Pretty good for the first month of summer. , average day 18.6 - 27.8, not too hot.
Newcastle University, NSW - December 2009 - Daily Weather Observations (http://www.bom.gov.au/climate/dwo/200912/html/IDCJDW2098.200912.shtml - broken link)
We start the seasons on the 1st of the month, not the 21st as in Northern Hemisphere.
The original penal settlers regarded this as too challenging to their intellects, so the 1st of the month was agreed upon.

Last edited by Derek40; 12-31-2009 at 07:20 PM.. Reason: error
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Old 12-31-2009, 07:38 PM
 
Location: Mayberry
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I can't give you all of that, but it had everything I love. Lots of thunderstorms in the summer, humidity, beautiful spring, fall was short lived and winter came with a foot of new snow in december!! What is to come?? I'm ready for spring and summer.
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Old 12-31-2009, 08:58 PM
 
Location: Subarctic maritime Melbourne
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Just another cold and crappy December as usual here.
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Old 01-01-2010, 09:36 PM
 
Location: New Jersey
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Cold and snowy here in New Jersey, with a couple brief warm ups and maybe a rain storm or two. Its also been pretty windy over the past several weeks.
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Old 01-02-2010, 07:57 AM
 
Location: East Central Phoenix
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Phoenix: average temperature for December was 53.7 degrees, which was 1.8 degrees below normal. Total rainfall for the month was only 0.47 inch, which was also below normal. Right now, everyone is claiming that we're supposed to be in an El Niño pattern ... but this would have been noticed in December with mild temps and above normal precipitation in the SW. So it appears thus far that El Niño is another hyped up climatological pattern (much like the global warming debacle).
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Old 01-02-2010, 08:14 PM
 
Location: Indiana Uplands
26,430 posts, read 46,625,443 times
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Quote:
Originally Posted by Valley Native View Post
Phoenix: average temperature for December was 53.7 degrees, which was 1.8 degrees below normal. Total rainfall for the month was only 0.47 inch, which was also below normal. Right now, everyone is claiming that we're supposed to be in an El Niño pattern ... but this would have been noticed in December with mild temps and above normal precipitation in the SW. So it appears thus far that El Niño is another hyped up climatological pattern (much like the global warming debacle).
I am fairly certain the El Nino is being tempered by the negative NAO, negative AO, positive PNA, and sunspot minimum.
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Old 01-02-2010, 10:31 PM
 
Location: Subarctic maritime Melbourne
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the cold and cloudy december and general lack of heatwaves this lousy crummer would suggest there is no elnino.
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Old 01-03-2010, 10:37 PM
 
Location: Golden, CO
2,611 posts, read 3,592,362 times
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McAllen, TX:

Avg. HI (74°-70°F) beginning of month to end
Avg. LO (55°-50°F)
avg. precip 1.21 in.

ACTUAL:
AVG HI 67 °F / 19 °C
AVG LO 50 °F / 10 °C
Hottest Day: 88 °F / 31 °C (8th)
Coolest Day: 48 °F / 8 °C (4th)
Hottest Night: 66 °F / 18 °C (8th)
Coolest Night: 33 °F / 0 °C (5th)

Dew point: MAX (71 °F / 21 °C ) MIN (15 °F / -9 °C )

Sea Level pressure: MAX 30.48 in / 1032 hPa MIN 29.53 in / 1000 hPa

precip: 5.03 in / 127.88 mm

Days in
80s-3
70s-10
60s-8
50s-9
40s-1
Nights in
60s-4
50s-14
40s-11
30s-2

Overall, below AVG on temps, above AVG on precip. Wow! A very good December for us. Just wishing for some frozen precip at least once!
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Old 01-04-2010, 12:31 AM
 
Location: Seattle area
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probably the sunniest December - 8 sunny days, 11 partly cloudy and only 12 cloudy. Rainfall 2.75 inches which is 2.87 below normal. Average high 43.7F (1.8 below normal). Highest high 57F on 20th. Lowest high 30F on 7th. Lowest low 16F on 10th. Highest low 45F on 16th and 20th. No snow
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