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Old 09-23-2013, 04:57 PM
 
Location: Finland
24,257 posts, read 20,797,221 times
Reputation: 11103

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The 30 year climate normals comes out only every 10 years (or 30 years if you live in Sweden), and that's way too seldom. So I decided to start the project myself.

The first one are the Helsinki 1991-2013 averages, which will be 75% of the next normals. There's still 7 years to go (and months to go for this year as well), but this is what it looks today:



Departure from the 81-10 normal mean temps, in C:

Jan: 0.5
Feb: -1.4
Mar: 0.0
Apr: 0.3
May: 0.0
Jun: 0.3
Jul: 0.4
Aug: 0.6
Sep: 0.7
Oct: 0.0
Nov: 0.3
Dec: 0.3

Yearly precipitation -5mm.

My conclutions. The record cold decade of the 1990's drops out, and most of the months averages are warmer. The exception is February, which mean temps has dropped by an incredible -1.4C. We have been riddled with many frigid Februarys recently, but the drop in temps is still surprising.
Another interesting month is October, as 1992 and 2002 had the coldest Octobers in recorded history, and already those drop the mean temps by 0.4C. This will probably balance out during the next 7 years.

Summers have been rising steadily, and the reason is mostly that we've had warmer than average summers recently, and those which has been cooler, has only been slightly cooler compared to many other months. September is the month that has risen the most, and no surprise, as the warmer summers warm up the Gulf of Finland more than in the 80's.
I'm most surprised that March hasn't turned warmer, mostly due to a few frigid ones, but I think this will balance out in the coming years as well.

Largest difference in mean monthly temps: February, 0.2C to -12.9C, December 3.0C to -8.9C, October 0.2C to 8.9C.

---

I know some of you have calculated your own averages, so post them! Any location or time is good and interesting. Just share everything you have!
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Old 09-23-2013, 08:02 PM
 
Location: Germany
505 posts, read 652,043 times
Reputation: 167
I calculated the averages for a city pretty much in the center of Germany (northwestern Bavaria), where I'm going to move to in the near future. So it's not my actual hometown, which features a more maritime climate and especially cooler summers than this city. Averages are taken from the period between 1991 and 2013 so that it's comparable to Ariete's stats...



Departure from the 81-10 means (C):

Jan: + 0.4
Feb: + 0.3
Mar: + 0.2
April: + 0.5
May: + 0.3
June: + 0.4
July: + 0.1
Aug: + 0.4
Sep: + 0.2
Oct: + 0.1
Nov: + 0.3
Dec: 0.0

well, nothing really surprising or interesting... at least at first sight...
more statistics will follow (precipiation, sunshine, etc.)
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Old 09-23-2013, 09:54 PM
B87
 
Location: Surrey/London
11,770 posts, read 8,595,600 times
Reputation: 3043
Max/min for London Heathrow, 1991-2013.

Jan: 8.1/3.3
Feb: 8.7/3.2
Mar: 11.6/4.4
Apr: 14.6/6.0
May: 18.1/9.2
Jun: 21.1/12.0
Jul: 23.4/14.1
Aug: 23.2/14.1
Sep: 20.0/11.6
Oct: 15.5/8.9
Nov: 11.2/5.8
Dec: 7.9/3.4
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Old 09-23-2013, 10:05 PM
 
Location: New York
11,340 posts, read 18,200,667 times
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1991-2013 averages for New York City (LGA):

Jan: 40.1°F / 28.3°F (34.2°F).....+1.0°F
Feb: 42.3°F / 29.4°F (35.9°F).....+0.2°F
Mar: 49.9°F / 35.9°F (42.9°F).....+0.3°F
Apr: 61.4°F / 45.2°F (53.3°F).....+0.4°F
May: 71.4°F / 55.0°F (63.2°F)....+0.4°F
Jun: 80.7°F / 65.1°F (72.9°F).....+0.4°F
July: 85.8°F / 71.0°F (78.4°F).....+0.7°F
Aug: 84.0°F / 70.2°F (77.1°F).....+0.5°F
Sep: 76.6°F / 63.5°F (70.1°F).....+0.6°F
Oct: 65.3°F / 52.2°F (58.7°F)......+0.3°F
Nov: 54.6°F / 43.0°F (48.8°F).....+0.1°F
Dec: 44.9°F / 33.7°F (39.3°F).....+0.8°F

Avg: 63.1°F / 49.4°F (56.2°F).....+0.5°F
---------------------------------------------------

Jan: 4.5°C / -2.1°C (1.2°C)..........+0.5°C
Feb: 5.7°C / -1.4°C (2.1°C)..........+0.1°C
Mar: 10.0°C / 2.1°C (6.1°C).........+0.2°C
Apr: 16.3°C / 7.3°C (11.8°C)........+0.1°C
May: 21.9°C / 12.8°C (17.3°C).....+0.2°C
Jun: 27.1°C / 18.4°C (22.7°C)......+0.2°C
July: 29.9°C / 21.7°C (25.8°C).....+0.4°C
Aug: 28.9°C / 21.2°C (25.0°C).....+0.2°C
Sep: 24.8°C / 17.5°C (21.1°C).....+0.3°C
Oct: 18.5°C / 11.2°C (14.9°C)......+0.2°C
Nov: 12.6°C / 6.1°C (9.3°C).........+0.1°C
Dec: 7.2°C / 1.0°C (4.1°C)...........+0.5°C

Avg: 17.3°C / 9.7°C (13.5°C).......+0.3°C
----------------------------------------------------

When compared to the 1981-2010 averages, January has warmed the most, followed by December, then July. Music to my ears.
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Old 09-23-2013, 11:17 PM
 
Location: Miami,FL
2,889 posts, read 3,571,976 times
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I found out that in you include the last 8 winters and drop out the oldest 8 winters used in the usda hardiness zone map that all of florida warms up between 1.6-1.8f . I didn't have enough time to do it for the rest of the country but all I know is with that 1.7f warming my house moves from zone 10b to zone 11a amazonian ultra tropicals here you come
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Old 09-24-2013, 12:50 AM
B87
 
Location: Surrey/London
11,770 posts, read 8,595,600 times
Reputation: 3043
Here are the 1991-2013 sunshine stats.

Jan: 60.3 (-1.2 hrs)
Feb: 75.5 (-2.4 hrs)
Mar: 119.0 (+4.4 hrs)
Apr: 168.9 (+0.2 hrs)
May: 196.9 (-1.6 hrs)
Jun: 203.9 (-0.4 hrs)
Jul: 210.0 (-2.0 hrs)
Aug: 199.6 (-5.1 hrs)
Sep: 153.3 (+4.0 hrs)
Oct: 119.0 (+2.5 hrs)
Nov: 72.8 (+0.2 hrs)
Dec: 55.6 (+3.6 hrs)

Annual: 1634.6 (+2.0 hrs)

August has the biggest change due to the 2 dullest Augusts on record in 2008 and 2011.
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Old 09-24-2013, 07:17 AM
 
Location: Rimini, Emilia-Romagna, Italy (44°0 N)
2,673 posts, read 2,672,012 times
Reputation: 1030


Compared to 1971-2000 averages:
Jan +0.0°C
Feb -0.3°C
Mar +0.6°C
Apr +0.7°C
May +1.1°C
Jun +1.7°C
Jul +1.5°C
Aug +1.5°C
Sep +0.4°C
Oct +0.5°C
Nov +1.3°C
Dec +0.1°C
Year +0.8°C
Rainfall -28 mm
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Old 09-24-2013, 04:24 PM
 
3,578 posts, read 3,244,427 times
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Mildest place in sweden is getting even milder with the new 1981-2010 normals
Allthough mild/warm all year round, this place has an all time record high of just 30.2C, which is colder than almost anywhere in southern and central sweden. Even most places in southern norrland has higher record highs. The all-time record low is -24.5C.

Last edited by kronan123; 09-24-2013 at 04:38 PM..
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Old 03-28-2014, 03:02 AM
 
Location: Finland
24,257 posts, read 20,797,221 times
Reputation: 11103
Updated for Turku:

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Old 03-30-2014, 03:12 PM
 
3,578 posts, read 3,244,427 times
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here's some climate data for Götalands "pole of cold" in winter. not in the sense that it has the coldest mean temp, but because it frequently reports Götalands lowest winter temperatures. the mean annual absolute minimum temperature (1996-2013) is -21.1C, which put it in hardiness zone 6a.

eh, just saw that i messed up the title in the climatebox. aja, whatever.
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