The first was on the 9th when Walpack (Sussex) cooled to 17° and three stations to 20°. While all but four December days found one or more NJWxNet station falling below freezing, only six days had lows of 20° or lower. A few local spots in the north failed to get into the warmth, with Haworth (Bergen) on the low end at 42°. Warm air surged further north on the 25th with Vineland (Cumberland) and Greenwich (Cumberland) each hitting 65° and 14 stations getting to 60°–64°. While no station reached 60° on the 24th, there was a 27° spread in high temperatures across NJ, with 56° maximums at Woodbine, West Creek, and CMCH, while HPM only reached 29°. CMCH was alone at 60° on the 18th, while CMCH was 63° and both West Cape May (Cape May) and Woodbine 60° on the 19th. Sicklerville (Camden) and West Creek each reached 63° on the 17th, with 35 locations from 60°–62°. Harvey Cedars and Fortescue (Cumberland) were lowest at 56°. Note the 2 ° increment scale beneath the map.Ī four-day run of 60°+ weather ensued on the 16th with CMCH at 68°, West Creek (Ocean) 67°, and 57 stations from 60°–66°.
#Nyc weather december 2021 professional#
Maximum temperatures on December 11th based on a PRISM (Oregon State University) analysis generated using NWS, NJWxNet, and other professional weather stations. Coolest was coastal Harvey Cedars (Ocean) and HPM, each at 58°.įigure 2.
This included 69° at Mansfield (Burlington), 68° at 13 stations, and 49 stations from 60°–67°. Most of interior southern, all of central, and northeastern NJ saw highs of at least 64° (Figure 2). The 11th was a record-setting day for warmth at some long-term stations around NJ, such as New Brunswick (Middlesex). The 6th saw 67° maximums at Mannington (Salem), Red Lion (Burlington), and West Deptford (Gloucester), with 12 stations at 66°, and 38 from 60°–65°. Woodbine (Cape May) made it to 60° on the 3rd. High Point Monument (HPM Sussex) only reached 47°. The 2nd found Cape May Court House (CMCH Cape May County) up to 65° and 36 of the 65 NJWxNet stations from 60°–64°. There were nine December days when high temperatures at one or more NJWxNet stations reached or exceeded 60°, just two fewer than in November. It is only one of three Decembers with minimum temperatures averaging above the freezing mark. The average minimum of 33.2° was 5.0° above normal and ranked 2nd.
The statewide average maximum of 49.7° was 4.7° above the 1991–2020 normal, ranking 5th mildest. The ten mildest Decembers across NJ since 1895. In fact, 32 previous Novembers have been colder than December 2021 and only four previous years have had mean temperatures between the two months differ by less than 2.7° (2015, 2012, 1996, and 1923). This was only 2.3° colder than the most recent mild November. The statewide average December temperature of 41.5° was 3rd warmest on record, 4.9° above the 1991–2020 normal, and a much larger 7.8° margin above the 1895–present normal. In the north the departure was 5.2” below normal, making it the 22nd least snowy December, tied with four other years. For the central area, this is 4.7” below average and ties with three other years for the 12th least snowy since records commenced in 1895. While no measurable snow fell in the south in December, the central area averaged 0.1” and the north 0.9”. The state climate office divides the NJ into northern, central, and southern divisions for snow, and monthly averages are generated from station data within each region. Much of New Jersey saw an absence of measurable snowfall, defined as 0.1” or more. The ten driest November–Decembers combined across NJ since 1895. The coastal division with 1.09” was 3.27” below normal and ranked 4th driest. The southern division came in with 1.20”, which is 3.08” below normal and ranks 5th driest. The northern division averaged 1.46”, which is 2.79” below normal and ranked 10th driest. The far south was driest, most places receiving less than an inch.
The west-central area received the most precipitation, exceeding 1.80” in some locations, but this was still well below normal (Figure 1). It was the driest December since 1989, which happened to be the coldest December on record. This is 2.98” below the 1991–2020 normal and ranks as the 6th driest since records commenced in 1895 (Table 1).
Statewide precipitation in December was 1.29”. An annual recap follows the December report where more will be said regarding annual temperature and precipitation. However, much like November, the last month of 2021 was a top 10 dry one. Following a cooler-than-normal November, it was back to the mild side in December, the ninth such month in 2021.
0 kommentar(er)
