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Post by Steelernation on Jan 1, 2021 3:48:30 GMT -5
 Mean max: 62.6 f Mean min: -0.2 f Fort Collins has now become a BSk climate as it rightfully should be, rather than the Dfa it was for 81-10. Temp changes from 81-10January: +0.8 f
February: +0.3 f
March: +1.2 f
April: +0.3 fMay: -0.1 fJune: +1.0 f
July: +0.8 f
August: +0.5 f
Sept: +1.2 f
October: +0.3 f
Nov: +0.8 f
Dec: +1.1 fYear: +0.7 f
Precipitation changes from 81-10January: -0.01”, -2%February: +0.07”, +18%March: -0.32”, -20%April: +0.04”, +2%
May: +0.29”, +12%June: -0.28”, -13%
July: -0.08”, -5%
August: -0.10”, -6%Sept: +0.09”, +7%
October: +0.10”, +9%Nov: -0.02”, -3%
Dec: -0.03”, -6%Year: -0.28”, -2%
Snow changes from 81-10January: -1.2”, -15%February: +0.6”, +9%March -3.2”, -25%April: 0”, 0% May: +0.8”, +114%June: - July: - August: - Sept: -0.2”, -22%October: +0.5”, +14%Nov: -1.2”, -14%Dec: -0.9”, -11%Year: -4.2”, -8% |
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Post by Deleted on Jan 1, 2021 8:07:56 GMT -5
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Post by Cadeau on Jan 1, 2021 11:25:54 GMT -5
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Post by srfoskey on Jan 1, 2021 19:31:11 GMT -5
Here they are for Oklahoma City and Raleigh. I'll calculate and upload the temperature trends later.  |
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Post by jgtheone on Jan 2, 2021 7:47:12 GMT -5
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Post by jgtheone on Jan 6, 2021 8:32:25 GMT -5
Averages for Melbourne City for 1991-2020! I've used Melbourne Regional Office for the years 1991-2014, and the Olympic Park station for years 2015-2020.  |
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Post by Donar on Jan 6, 2021 12:16:01 GMT -5
Note: records are 1991-2020 only.
New record highs were set for Jan, Feb, May, Jun, Jul, Sep and Nov in the last decade. No new record lows were set.
Comparison to 1981-2010:
Overall, Frankfurt became warmer, sunnier and drier. Highs increased more than lows. April and June warmed up the most, September and October the least. Precipitation decreased drastically in March, which was also the month with the highest sunshine increase. Such conditions probably increased radiative cooling at night, affecting avg. lows which had the lowest increase in March of all months. December and August were the only months getting wetter, and December and February the only month that had les sunshine.
And here the comparison to 1961-1990:
Similar patterns to above, but even more drastic. So it got 1.4 °C warmer here from one WMO climatological normal to the next. Spring became much warmer, drier and sunnier in comparison to autumn, which nearly stayed the same.
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Post by Wildcat on Jan 7, 2021 17:31:18 GMT -5
Raw averages for the year  |
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Post by Met.Data on Jan 10, 2021 9:50:55 GMT -5
Let's start with the 1981-2020 averages:  And then the 1991-2020 averages:  It has warmed by 0.3°C between these periods. Increases in sunshine in winter and spring has slightly increased the sunshine hours, and rainfall is virtually unchanged. However, have summers really deteriorated, or is it just in the imagination? Nope, it's actually true. Since I started recording the weather in 2007, summers have become noticeably cloudier as seen below, especially when compared to the 1981-2010 averages. August has lost nearly 20 hours of sunshine in the last 14 years compared with the 1981-2020 average.  |
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Post by Ariete on Jan 10, 2021 10:14:05 GMT -5
All months have warmed, annual mean has warmed by 0.9C, precipitation has fallen with 5%. Records are 1991-2020 only.
edit: I'll add the last 10 years box as well, just in case, because Baba will probably use his. I won't use it in any "official" stats.
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Post by Cadeau on Jan 10, 2021 14:49:28 GMT -5
Reykjavík (1991-2020 normals)  Comparison of normals for the period 1961-1990 to 1991-2020January: 0.6°C warmer, 4.1mm wetter, 2.6 hours sunnierFebruary: 0.5°C warmer, 4.7mm wetter, 1.6 hours sunnierMarch: 0.6°C warmer, 0.7mm drier, 1.3 hours sunnierApril: 0.7°C warmer, 3.0mm wetter, 1.1 hours sunnierMay: 0.1°C warmer, 0.2mm drier, 8.0 hours sunnierJune: 0.3°C warmer, 0.5mm drier, 15.5 hours sunnierJuly: 0.4°C warmer, 2.4mm drier, 15.1 hours sunnierAugust: 0.3°C warmer, 2.8mm drier, 9.8 hours sunnierSeptember: 0.5°C warmer, 13.5mm wetter, 1.7 hours cloudierOctober: 0.5°C warmer, 5.4mm wetter, 1.4 hours cloudierNovember: 0.3°C warmer, 7.7mm wetter, 1.3 hours cloudierDecember: 0.2°C warmer, 0.8mm wetter, 9.4 hours cloudierAnnual: 0.4°C warmer, 32.5mm wetter, 42.3 hours sunnier |
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Post by Deleted on Jan 10, 2021 18:07:42 GMT -5
However, have summers really deteriorated, or is it just in the imagination? Nope, it's actually true. Since I started recording the weather in 2007, summers have become noticeably cloudier as seen below, especially when compared to the 1981-2010 averages. August has lost nearly 20 hours of sunshine in the last 14 years compared with the 1981-2020 average. Here's the horrorshow collapse of summer 2007-2020 for London.
2007-2020 sunshine relative to 1981-2010.
Jan: -6.3 hrs
Feb: -3.2 hrs
Mar: +11.4 hrs
Apr: +10.3 hrs
May: -6.9 hrs
Jun: -25.2 hrs
Jul: -20.0 hrs
Aug: -37.5 hrs
Sep: -3.8 hrs
Oct: -17.4 hrs
Nov: -12.9 hrs
Dec: -1.0 hrs
The rainfall pattern is also fucked, with a summer peak in addition to the usual rainfall peak between October-January. April and September become the driest months of the year.
Compared to the preceeding 14-year period 1993-2006... Jan: 62.3 hrs
Feb: 81.0 hrs
Mar: 118.6 hrs
Apr: 163.1 hrs
May: 201.3 hrs
Jun: 217.4 hrs
Jul: 221.8 hrs
Aug: 217.3 hrs
Sep: 153.1 hrs
Oct: 123.5 hrs
Nov: 77.9 hrs
Dec: 55.1 hrs Annual: 1692.4 hrs (+172.3 hours vs 07-20)!
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Post by Deleted on Jan 11, 2021 10:00:24 GMT -5
I've put in a FoI request to the Met Office to get hold of Kew Gardens sun hours for the 2006-2020 period. We will finally see if it's a larger trend or just an issue with the Heathrow site/recorder.
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Post by srfoskey on Jan 12, 2021 21:58:46 GMT -5
Here are the differences between the 1991-2020 normals and those of 1891-1920, 1961-90, and 1981-2010. All temperatures are in Fahrenheit, and precipitation and snowfall are in inches. Both the Raleigh and Oklahoma City stations were located in a different place prior to the middle of the 20th century.   |
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Post by Crunch41 on Jan 12, 2021 22:14:52 GMT -5
So far it's getting warmer (+0.5F) with nights warming more than days. April is the only month that is colder and February the only recent record low (1996). November has not come within 23 degrees of the record in 30 years, though to be fair only one year came within 10 degrees of the record from 1875.
The 2011-2020 decade added 4 new record highs, 4 new record warm months, 1 record wet month, and set zero cold or dry records. December is by far the biggest warming with a full 2 degree increase. The 1980s had a few cold months, and the 2010s had many warm months including the all-time mildest in 2015. Seasonal lag is a bit stronger, with a colder April and the end of winter seeing the least warming. Overall slightly drier. Wetter spring and drier fall.
The averages:
One day in June recorded 0.4 inches of snow but the low that day was in the 60s so it must be hail. It doesn't snow in June. For reference, the difference between NOWData and 1981-2010 normals: I noticed last time that the NOWData averages and the official normals didn't match. Here is NOWData minus the official normal. The average temperatures are higher in every month, snowfall is higher, the rest is the same.  |
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Post by Yahya Sinwar on Jan 12, 2021 22:38:37 GMT -5
New snowfall median for RDU is 3.5 inches .
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Post by Cadeau on Jan 13, 2021 11:50:27 GMT -5
USA - NortheastBoston, MA 42°21.6'N 71°00.6'W 3.7m ASL  - New York City, NY 40°46.7'N 73°58.2'W 39.6m ASL  - Washington D.C. 38°50.9'N 77°02.1'W 3.0m ASL 
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Post by Cadeau on Jan 13, 2021 11:50:44 GMT -5
USA - SouthAtlanta, GA 33°37.8'N 84°26.5'W 307.8m ASL  - Miami, FL 25°47.4'N 80°19.0'W 8.8m ASL  - Dallas, TX 32°51.1'N 96°51.3'W 134.1m ASL 
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Post by Cadeau on Jan 13, 2021 11:51:01 GMT -5
USA - MidwestIndianapolis, IN 39°42.5'N 86°16.8'W 240.8m ASL  - Chicago, IL 41°59.7'N 87°56.0'W 200.6m ASL  - Minneapolis, MN 44°53.0'N 93°13.7'W 265.8m ASL 
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Post by Cadeau on Jan 13, 2021 11:51:19 GMT -5
USA - MountainDenver, CO 39°51.7'N 104°40.4'W 1,650.2m ASL  - Salt Lake City, UT 40°46.7'N 111°58.2'W 1,287.8m ASL  - Phoenix, AZ 33°25.7'N 112°00.2'W 337.4m ASL 
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