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Despite some damaging storms impacting portions of New Jersey on several days and some localized deluges near month’s end, June rainfall came in well below average. The statewide average of 2.36” was 1.66” below the 1981–2010 average. This ranks as the 20th driest June since 1895. Northern and central counties were generally drier than those to the south. At month’s end, the counties from Hunterdon, Somerset, and northern Middlesex northward were classified as being in “moderate drought,” the D1 category on the US Drought Monitor. The counties to the south, through Ocean and Burlington, were in the Monitor’s “abnormally dry” D0 category. June stream flow, ground water, and precipitation levels were all well below average, while reservoir capacities in the north began to dip below average near the end of the month.

Temperatures began on the cool side, but the second half of the month was warm enough to bring the statewide average June temperature to 70.6°, which was 0.5° above average. This ranks as the 30th mildest June on record. There was one minimal heat wave at some inland lower-elevation locations, where temperatures climbed to 90° or higher from the 19th–22nd. However, no location exceeded 93° this month. The dry conditions helped to rid the atmosphere of the previous day’s warmth during the nighttime hours, thus temperatures of 45° or lower were observed in spots on seven mornings.

April continued a dry period that began in March. Monthly rain and melted snow totaled 2.34”. This was 1.72” below the 1981–2010 normal and ranks as the 20th driest April since 1895. The 4.35” March–April total was 3.94” below average and ranks as the 7th driest such interval. Unlike the abnormal warmth of March, the average April temperature of 50.7° was 0.5° below normal. This ranks as the 48th mildest on record.

Statewide snowfall averaged 0.2”, which is 0.7” below the 1981–2010 mean. The southern counties averaged 0.3” (-0.3”), central 0.0” (-0.9”), and the north 0.2” (-1.2”). The 2015–16 snow season ended with a statewide average of 28.0”. This is 4.3” above the 1981–2010 average and 1.8” above the 1895–2016 average. The north was least snowy with 26.5” (-6.5”), the central snowiest at 31.0” (+4.3”), and the south with 27.4” averaged 9.8” above normal. The January blizzard provided the bulk of the snow, well over 75% of the winter total in some locations.

Much like this past January, the second month of 2016 had considerable swings and occasional extremes in temperature and precipitation. This included a brief, exceedingly cold mid-month outbreak with subzero wind chills and a late-month evening with severe thunderstorms bringing strong winds, hail, and flash flooding across NJ. A key indicator of the volatile weather pattern was the wind, which on 13 days gusted to 40 mph or higher somewhere in the state, with five of these days gusting to at least 50 mph. The statewide average temperature was 35.6°, which is 1.8° above the 1981–2010 normal. This ranks as the 19th mildest February since 1895. Precipitation (rain and melted snow) averaged 4.21”. This is 1.35” above normal and ranks as the 24th wettest. Snowfall was below normal, with a statewide average of 5.1”. This is 3.0” below normal and ranks as the 52nd least snowy of the past 122 Februaries. Northern counties tallied only 4.6” (-5.5”), the central region 6.3” (-2.7”), and the south 4.7” (-1.9”).

While average monthly temperature and precipitation (rain and melted snow) did not vary much from their long term averages, January 2016 certainly had enough of a potpourri of atmospheric conditions to satisfy (or displease) most anyone in the Garden State. Temperatures ranged from 67° to -2°, a storm deposited as much as 2.35" of rain, and a blizzard dumped record-breaking snow in several locations and caused moderate to major flooding, especially in south Jersey coastal communities.

The statewide monthly average temperature of 31.1° was 0.1° below the 1981–2010 normal and ranked as the 66th coldest since 1895. The temperature averaged 16.7° colder than the record-shattering December 2015 warmth. This is not a record for a December to January swing in temperature, nor for several other monthly pairs too, however it ranks among the largest. Precipitation averaged 3.65", which is 0.17" above normal and 44th wettest. Statewide snowfall averaged 20.0". This was 12.1" above normal and ranks as the 7th highest since 1895 and the largest since the record 23.1" total in 2011. The north received 20.4", which is 11.1" above normal and ranks 13th largest for January, 23.1" (+15.3") fell in central NJ, ranking 5th greatest for the month, and the south averaged 18.2" (+12.5") tied for the 4th highest January total.

Listed below is the Office of the NJ State Climatologist’s ranking of the top 10 weather and climate events of 2015. More about each event can be found in the monthly narratives posted on njclimate.org. You might be tempted to rearrange the rankings, particularly as some of the events down the list may have affected you more than others ranked higher. Or perhaps you best recall one that didn’t make the list. That’s the enjoyment (and frustration!) of lists. While there are a variety of events that made the list, the variable that more often than not took center scene in 2015 was the temperature. Be it warm or cold, the thermometer had stories to tell. Unless stated otherwise, observations are based on an average of several dozen stations. The period of record for monthly and annual departures is 1981–2010; while for extremes and rankings it is from 1895–present.