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Robafry
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April 2021 featured ten days with highs of 70° or warmer, the first time April reported this many since 2010, and just the tenth time overall. (The average number of such days in April is six.) This above average number of warm days resulted in the month's average high being... Continue reading
Posted 3 days ago at New York City Weather Archive
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For the most part, cold fronts move from west to east in the Northeast, but, occasionally, chilly air arrives from the opposite direction. When it does, this occurrence is known as a "back-door" cold front. Because such a front's winds usually come in from the ocean, this type of front... Continue reading
Posted Apr 17, 2021 at New York City Weather Archive
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The first week-and-a-half of March 2021 was exceedingly dry, with just 0.16" falling thru St. Patrick's Day. (3/1 was the only day with rain.) Then, in the last two weeks of the month, regular rainfalls returned, with 3.25" measured (more than 50% above average for that period). The beginning of... Continue reading
Posted Apr 2, 2021 at New York City Weather Archive
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Of all the months of the year, March has warmed up the most since the 19th century (1869-1900). While the average annual temperature so far this century (thru 2020) has been 3.6 degrees warmer than the average annual temperature in the late 19th century, March is 6.3 degrees warmer (April... Continue reading
Posted Mar 22, 2021 at New York City Weather Archive
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Since 1980, the average date of the first reading of 80° or warmer is April 21 (a month later than the average date of the first reading of 70°+). This is about a week earlier than 1900-1979, and two weeks earlier than the 1869-1899 period. It's happened as early as... Continue reading
Posted Mar 15, 2021 at New York City Weather Archive
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JANUARY January 26 - The 0.1" of snow that fell was the first measurable snow since the 10.4" snowstorm of Dec. 16-17, nearly six weeks ago. Today's high and low were just three degrees apart (34°/31°). January 31 - Until this evening, the month was set to become one of... Continue reading
Posted Mar 9, 2021 at New York City Weather Archive
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February 2021 was 1.1 degrees colder than average, and the eighth snowiest February on record, with 26.0” measured. More than half of the snow fell on Feb. 1, when 14.8” piled up (in total, the storm produced 17.4”). This was the largest accumulation ever reported on the first day of... Continue reading
Posted Mar 1, 2021 at New York City Weather Archive
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Pity the rain. It doesn't generate anywhere near the levels of excitement accorded snow. (In a Brady Bunch analogy, rain is Jan, snow is Marcia.) Perhaps it's because snow is a seasonal treat confined mostly to four months of the year (in New York), while rain has a year-round presence.... Continue reading
Posted Feb 23, 2021 at New York City Weather Archive
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During the winter of 2021, February became the 36th month (since 1869) to have 20 inches or more of snow fall in Central Park. This was the seventeenth February to gain this distinction, by far the most of any month (January's had eight occurrences; December's had six; and March, five).... Continue reading
Posted Feb 13, 2021 at New York City Weather Archive
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If you're not a "winter person", then the first three weeks of January 2021 were tolerable, as temperatures were six degrees above average (with every day but two above average), and there was no snow (average high/low was 43°/33°). Then, the jet stream shifted, and the last nine days of... Continue reading
Posted Feb 2, 2021 at New York City Weather Archive
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In the years I've spent poring over New York's daily weather data, I'd notice pairs of days with the same high and low. This analysis is the product of my curiosity about how common such pairings are. On average, two occur each year (2.3 to be exact). The most has... Continue reading
Posted Jan 23, 2021 at New York City Weather Archive
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2020 was 2.4 degrees above average and became New York's second mildest year, behind 2012. Only two months during the year, April and May, were chillier than average. November became the mildest on record, July the seventh hottest, and February and March each became the eighth mildest. January finished just... Continue reading
Posted Jan 6, 2021 at New York City Weather Archive
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The lasting memory of December 2020 will no doubt be the snowstorm of Dec. 16-17. The 10.5" of snow that piled up was the biggest snowfall in December since 2010 and the thirteenth December snowfall of 10"+. Another highlight was the intense rainstorm that blew through the City on Christmas... Continue reading
Posted Jan 1, 2021 at New York City Weather Archive
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For the purposes of this analysis a dry month is one that had less than two inches of precipitation. In the years since 1869, 18% of all months have been this dry, or about two months each year. The most dry months in one year is six, which happened in... Continue reading
Posted Dec 26, 2020 at New York City Weather Archive
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Nearly 40% of Decembers since 1869, or 59, have experienced cold snaps/cold waves that lasted five days or longer (about half were seven+ days). The most recent occurred in 2017. In addition to the five-days+ qualifier, a cold snap needed to have an average high temperature of 32° or colder... Continue reading
Posted Dec 14, 2020 at New York City Weather Archive
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Since 1900 the average high/low on the coldest day of each winter has been 19°/6° (in the last third of the 18th century it was 14°/2°; in the 21st century it's risen to a relatively temperate 20°/9°). The coldest day has occurred as early as Nov. 30 (winter of 1875-76)... Continue reading
Posted Dec 8, 2020 at New York City Weather Archive
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November 2020 was 5.2 degrees warmer than average and became the warmest November on record, supplanting November 2015 by 0.2 degrees. Sixteen days had highs in the 60s or 70s (one fewer than the 1931 record). What stood out was a streak of six days with highs in the 70s... Continue reading
Posted Dec 2, 2020 at New York City Weather Archive
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As 2020 wore on, and COVID-19 became part of our lives, more and more Americans took to wearing face masks to protect themselves and others from the spread of the virus. Some wearers made the best of it and made fashion statements with these protective coverings. However, I became more fascinated by the more mundane signs displayed on the doors of stores, restaurants, office buildings and apartment buildings instructing those entering to wear a face mask. Unlike mass-produced signs purchased from a hardware store that say 'Welcome' or 'Closed', face-mask signs have more personality. And much like snowflakes, it seems... Continue reading
Posted Nov 17, 2020 at History As You Experienced It
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Central Park's first three decades of weather records, from the latter part of the 19th century, reveal that New York was significantly colder than what we've been accustomed to in the past 40 years. These decades account for twelve of New York City's fifteen coldest years - and all of... Continue reading
Posted Nov 14, 2020 at New York City Weather Archive
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October 2020 was slightly milder and wetter than average in New York. The month's first week-and-a-half was uneventful, with just 0.06" of rain. Then three significant rain events soaked the City, each bringing more than an inch of rain: 1.30" fell on 10/12-13; 1.36" on 10/17 and 2.17" on 10/29-30.... Continue reading
Posted Nov 2, 2020 at New York City Weather Archive
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September 2020 was a touch milder than average (+0.8 degree), with close to an average amount of rain (3.94"). The month's story can be told by three eight-day periods: Sept. 3-9 was four degrees above average, Sept. 23-30 was six degrees above average, and the middle of the month (Sept.... Continue reading
Posted Oct 1, 2020 at New York City Weather Archive
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The decade started with the first back-to-back triple-digit highs (summer of 1901) and ended with the snowiest Christmas Day (1909). In between were two of New York's coolest summers (1902 and 1903) and two of its coldest winters (1903-04 and 1904-05). 1904 would also gain the distinction of being the... Continue reading
Posted Sep 8, 2020 at New York City Weather Archive
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Like June and July, August was warmer than average, but not to the degree of the two preceding summer months. It was 1.7 degrees above average and the 23rd hottest August on record. This followed June, which was 16th hottest (2.3 degrees above average), and July, which was 7th hottest... Continue reading
Posted Sep 4, 2020 at New York City Weather Archive
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So far this century, the average date for the first reading of 70° or warmer in Central Park has been March 19 (and in the past five years it's been March 5). This is four weeks earlier than what the average date was during 1869-1899; and during the 20th century... Continue reading
Posted Aug 20, 2020 at New York City Weather Archive
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This post has been a long time coming. New York City, arguably the world's preeminent city, ironically, has a weather station in Central Park (serving as the official measurement site for NYC) that brings to mind that of a third world country. There are regularly occurring instances of reporting glitches.... Continue reading
Posted Aug 9, 2020 at New York City Weather Archive