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Post by knot on Jan 2, 2022 0:47:54 GMT -5
December (+Annual) 2021 Summary Temperatures right on average for December—though with great stability. Precipitation slightly above, with quite a few severe storms this month; comprising rain rates of as much as 64 mm/hr and wind gusts to 90 km/h in the strongest of these (a frontal band). Of note is a dramatic increase in temperature from November, pronounced moreso here than at Hunters Hill. This year has finished off remarkably cool and wet: the annual mean maximum a full degree below average (and the annual mean minimum about a half-degree below); and a rainforest-tier annual rainfall of well over 2,000 mm—though just under 1,700 mm at Hunters Hill. Relatively cooler and wetter towards the immediate slopes of the GDR, as evident by Hunters Hill ending up with significantly lower precipitation and warmer temperatures (especially June and November) despite its higher altitude and more south-western location. Seasonal range was precisely on average; ranging from 25.3 to 6.5 °C from Jan to Jul, compared to the average of 26.2 to 7.4 °C (also Jan and Jul). Days of precipitation were above average to a profound degree (157 days compared to an average of 136), making for a particularly cloudy year. I absolutely hated this year's "summer" (i.e., Feb and March), but I loved winter save for Boregust and thought fair of spring (though spring was much too stable for my liking); autumn, being April and May, was excellent. July was my favourite month, with April and June following closely; and February, March, August all three constituting my least-favourite. A particularly healthy Northwest cloudband + westerly belt/LWT activity was observed from early winter through to late spring…if only the AAO weren't so stubbornly positive throughout the latter half of the year, it would've been spectacular. Anomalies @ Hunters Hill (1993–2020)[December]• Mean Maximum: 23.0° C (–0.1° C) • Mean Minimum: 12.3° C (+0.1° C) • Precipitation: 88.6 mm (114.77%) [Annual]• Annual Mean Maximum: 15.5° C (–1.0° C) • Annual Mean Minimum: 7.6° C (–0.4° C) • Annual Precipitation: 1,680.8 mm (141.55%) • Seasonal Range: Jan 25.3° C to Jul 6.5° C = 18.8° C (0.0° C) • Days of Precipitation: 157 (+21) 
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Post by Benfxmth on Jan 2, 2022 11:32:19 GMT -5
I think I'll merge this into this thread, but will spoiler the boxes so it doesn't take too long to load / scroll through. I'll start with some from the western U.S.; I'm skipping a lot of states because Steelernation has got a lot of the region covered (especially the Intermountain West) and because I intend to post international weather boxes as well later on. I made Python scripts to pull out monthly data from daily .csv data, and thus make things easier, and note that trace amounts of precip. are counted as zero. NOTE: I can't guarantee every single weather box I post will be accurate, and representative of the area. A few from AZ: Some from CA: A few from OR and WA: Valles Caldera, NM:  |
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Post by Benfxmth on Jan 2, 2022 11:32:45 GMT -5
A few from Alaska I thought were worth posting, even if some data is missing: |
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Post by Benfxmth on Jan 2, 2022 11:42:56 GMT -5
I've had enough time in hands to make a bunch more today—mostly focusing on the South. TX: LA: MS: AR: AL: GA: SC: NC: TN: And a few from Virginia: |
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Post by Steelernation on Jan 2, 2022 12:00:36 GMT -5
There’s still missing data for the 28th and missing snowfall for the 31st on nowfata so I’ll do an estimate now for December. I’ll do a weather box and update this when it gets filled in. *** = estimated (Temps is filled in from raw observations, snowfall from the nearest snowfall report) Average high: 50.3*** Average low: 22.7*** Mean: 36.5*** Precipitation: 0.56” (+0.09”, 119%) Precip days: 2 Days >1 mm: 2 Snowfall: 6.5”*** Snow days: 1 Days >1 cm: 1 Max snow depth: 6” on the 31st Days snow lying: 1 Highest temp: 74 on the 2nd Lowest temp: 8 on the 18th Highest low: 39 on the 9th and 24th Lowest high: 28 on the 6th •2nd warmest December temp ever •Likely the T-4th warmest December ever Here’s the month using midnight-midnight:  |
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Post by Cadeau on Jan 2, 2022 13:05:57 GMT -5
The best year since I moved to live here! The same weather pattern like this year should be repeated more often in the future. - Paris, Île-de-France, France December 2021 Average: High 9.6°C / Low 5.5°C / Mean 7.6°CHighest: 15.4°C [30th,31st] Lowest: -1.6°C [23rd] Lowest High: 0.1°C [22nd] Highest Low: 13.0°C [30th] Precipitation: 77.3 mmPrecipitation Days: 13 Sunshine Hours: 60.1 hours Sunshine Percentage: 23.3% Early December: High 9.0°C / Low 4.2°C / Mean 6.6°C / Precipitation 41.8 mm / 25.2 sunshine hours Mid December: High 8.9°C / Low 5.6°C / Mean 7.2°C / Precipitation 1.4 mm / 11.8 sunshine hours Late December: High 10.8°C / Low 6.7°C / Mean 8.7°C / Precipitation 34.1 mm / 23.2 sunshine hours  - Torcy, Île-de-France, France December 2021 Average: High 9.8°C / Low 4.1°C / Mean 6.9°CHighest: 16.0°C [30th,31st] Lowest: -4.3°C [22nd] Lowest High: 0.3°C [22nd] Highest Low: 13.1°C [30th] Precipitation: 84.6 mmPrecipitation Days: 16 Early December: High 9.2°C / Low 3.1°C / Mean 6.1°C / Precipitation 49.8 mm Mid December: High 8.8°C / Low 3.8°C / Mean 6.3°C / Precipitation 2.0 mm Late December: High 11.2°C / Low 5.3°C / Mean 8.3°C / Precipitation 32.8 mm  - Seoul, South Korea December 2021 Average: High 5.1°C / Low -3.5°C / Mean 0.6°CHighest: 13.3°C [7th,8th] Lowest: -15.5°C [26th] Lowest High: -7.3°C [25th,26th] Highest Low: 5.8°C [10th] Precipitation: 7.9 mmPrecipitation Days: 8 Snowfall: 4.9 cm Snowy Days: 3 Average Relative Humidity: 61.5% Average Wind Speed: 2.3 m/s Sunshine Hours: 185.4 hours Sunshine Percentage: 62.2% Early December: High 8.4°C / Low -0.2°C / Mean 3.9°C / Precipitation 1.2 mm / 64.8 sunshine hours Mid December: High 11.1°C / Low -0.9°C / Mean 5.2°C / Precipitation 6.3 mm / 57.0 sunshine hours Late December: High -3.9°C / Low -8.8°C / Mean -6.7°C / Precipitation 0.4 mm / 63.6 sunshine hours  - Tokyo, Tokyo, Japan December 2021 Average: High 12.5°C / Low 4.0°C / Mean 7.9°CHighest: 20.3°C [1st] Lowest: -2.2°C [27th] Lowest High: 6.0°C [31st] Highest Low: 9.7°C [1st] Precipitation: 116.0 mmPrecipitation Days: 7 Snowfall: 0 cm Snowy Days: 0 Average Relative Humidity: 60% Average Wind Speed: 2.4 m/s Sunshine Hours: 202.5 hours Sunshine Percentage: 67% Early December: High 14.0°C / Low 7.0°C / Mean 10.3°C / Precipitation 100.5 mm / 51.1 sunshine hours Mid December: High 12.3°C / Low 3.5°C / Mean 7.7°C / Precipitation 11.5 mm / 69.2 sunshine hours Late December: High 11.3°C / Low 1.6°C / Mean 6.0°C / Precipitation 4.0 mm / 82.2 sunshine hours  |
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Post by Cadeau on Jan 2, 2022 13:53:16 GMT -5
Helsinki, Uusimaa, Finland December 2021  - Copenhagen, Hovedstaden, Denmark December 2021  - Montréal, Québec, Canada December 2021  - Boston, MA, United States December 2021  - New York City, NY, United States December 2021  - Chicago, IL, United States December 2021  - Seattle, WA, United States December 2021  |
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Post by srfoskey on Jan 2, 2022 16:09:13 GMT -5
December 2021 was the warmest on record in Oklahoma City by 2.0°F (1.1°C). It was also the first record warm month in the city since March 2012. It would have tied for the driest on record, except for the small amount of rain that occurred on the last day of the month. Even a mere 0.19" (4.8 mm) was enough to knock the month out of the top 10 driest months. Three days set or tied a daily record high, and two days set or tied a record high minimum. The average high this month was the warmest on record by a solid 5.0°F (2.8°C), warmer than an average November. However, the average low was only the third mildest on record. The absolute minimum of 12°F (-11°C) was about average, but the coldest high was 45°F (7°C), the mildest on record. A total of 10 days hit 70°F (21°C), the most on record.
2021 as a whole had near-normal temperatures and below-normal precipitation. The extremely cold February was canceled out by the extremely warm December. The spring severe season was quiet, and most of the severe weather happened in October. 2021 was also the first year to not hit 100°F (38°C) since 2004. Overall it was a good year, but I would have liked December to be significantly colder, and for the second half of the year to have been wetter. A cooler and wetter March would have also been nice.
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Post by Speagles84 on Jan 2, 2022 17:20:53 GMT -5
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Post by longaotian on Jan 2, 2022 18:07:09 GMT -5
December//2021 Auckland SummaryA warm december to finish off a warm year. The early and later parts of the month were well above average temperatures, however the middle part of the month was cool and wet. Overall a good year aside from the lame ass spring.  December temperatures across the country 
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Post by insertusername on Jan 2, 2022 23:53:52 GMT -5
I've had enough time in hands to make a bunch more today—mostly focusing on the South. TX: LA: MS: AR: AL: GA: SC: NC: TN: And a few from Virginia: Cheers to all the effort you put in! I would like to note that downtown Mobile, Savannah, and Charleston have yet to dip to 0 Celsius or below, as I have been monitoring the forecasts for them since November 1, and the coastal downtown areas where the general weather is taken from (as in, just googling the weather for those places) are warmer than the inland airports where frost is reported from. Same goes for Cape Hatteras. I don't know exactly where its general weather is taken from, but those forecasts gave no frosts just yet. |
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Post by Benfxmth on Jan 3, 2022 2:11:32 GMT -5
Some for western-central Canada (including the Canadian Arctic). |
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Post by ilmc90 on Jan 3, 2022 10:23:55 GMT -5
Well above average December. Had a couple of light snowfalls including a nice coating on Christmas Eve but under an inch total for the month. The 64 F/18 C high on December 11th was recorded after sunset and we also had a pretty strong thunderstorm for this time of year. November data has gaps and no precipitation recorded since the station was offline intermittently so take it FWIW.  |
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Post by Steelernation on Jan 3, 2022 20:25:01 GMT -5
T-4th warmest December and the warmest since 1980. Year finishes as the 5th warmest. Also had the 2nd warmest December day on the 2nd. Average high: 50.3 (+6.3 f) Average low: 22.7 (+4.4 f) Mean: 36.5 (+5.4 f) Precipitation: 0.56” (+0.09”, 119%) Precip days: 2 Days >1 mm: 2 Snowfall: 6.5” Snow days: 1 Days >1 cm: 1 Max snow depth: 6” on the 31st Days snow lying: 1 Highest temp: 74 on the 2nd Lowest temp: 8 on the 18th Highest low: 39 on the 9th and 24th Lowest high: 28 on the 6th Here’s the month using midnight-midnight: And the year:  Missing data got filled in. |
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Post by Benfxmth on Jan 4, 2022 1:56:59 GMT -5
A few from Chile: Some from Brazil. INMET is god-awful with daily data and many sites are potholed with missing data, but they're worth posting anyways: |
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Post by Morningrise on Jan 4, 2022 19:20:51 GMT -5
2021 sunshine hours are in, slightly undercounted actually as October is missing a week's worth of data.  |
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Post by tommyFL on Jan 4, 2022 20:54:15 GMT -5
ThreadEx sites in FL by WFO Key West: Miami - South Florida: Tampa Bay (Lakeland and Brooksville excluded because of missing data): Melbourne (Vero Beach excluded because NWS Melbourne acknowledged temperature sensor was out of calibration in email correspondence): Jacksonville: Tallahassee: Mobile/Pensacola: |
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Post by jetshnl on Jan 4, 2022 21:18:06 GMT -5
ThreadEx sites in FL by WFO Nice, damn shame these sites don’t have sunshine recorders. |
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Post by Babu on Jan 6, 2022 6:49:25 GMT -5
Interestingly enough, the sunniest month recorded in 2021 in Norway, was at Bergen Airport in August, with 325h (followed by 323h in Kristansand in April)  |
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Post by Babu on Jan 6, 2022 9:16:39 GMT -5
Here's Umeå airport 2021 (vs 1991-2020)  Here's an anomaly table I made for temp, precipitation and sunshine compared to 1991-2020. (as well as one with a more homogenous color scheme, don't know which color scheme is neater)  A pretty sunny and dry December, but it was also the coldest since 2012, by 3.1'C (we actually haven't had a single below average December since 2012) Chart over Decembers since 1991: The year as a whole was okay. A little colder than average, and very wet, but still stunnier than average. Winter was extremely snowy, spring was alright, summer was really nice, but fall was atrocious being either extremely wet or really cold or cloudy, and sometimes all at once. Over-all the last quarter was probably the worst. |
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Lived:
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