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A weir immediately downstream of the confluence of the Raritan and Millstone rivers in Somerset County on June 16th, as taken from the towpath of the Delaware-Raritan Canal
A weir immediately downstream of the confluence of the Raritan and Millstone rivers in Somerset County on June 16th, as taken from the towpath of the Delaware-Raritan Canal. Photo by Dave Robinson.

June was a hit or miss month when it came to rainfall, even within counties. Of course, this is not all that uncommon during the warm season, where much of the rainfall arrives courtesy of localized showers and thunderstorms. There were also ups and downs of the thermometer during the month, including some chilly mornings. Overall, the balance was weighted towards the warm side of the ledger, resulting in a top 10 ranking for June temperature.

The statewide average temperature of 71.9° was 1.6° above the 1991–2020 normal (3.0° greater than the 1895–2021 average). This ties the month with 2011 as the 8th warmest since records commenced in 1895. Seven of the 16 warmest Junes of the past 127 years have occurred in just the past 17 years. The average high of 82.7° was 1.7° above normal and ties as the 11th warmest, while the average low of 61.0° was 1.4° above normal and ranks 8th warmest.

Latest Extremes

City, State Temp
Lower Alloways Creek, NJ 84
Fortescue, NJ 84
Greenwich, NJ 84
Dennis Twp., NJ 84
Mannington Twp., NJ 84
City, State Temp
High Point Monument, NJ 68
Vernon Twp., NJ 70
Wantage, NJ 72
High Point, NJ 72
Ramsey, NJ 73
most current information as of Jul 28 11:55 AM

Latest Conditions & Forecast

New Brunswick, NJ

Rutgers University Meteorology Program

80°F

Wind

2 mph from the NNW

Wind Gust

9 mph from the NNW

Mostly Sunny
86 °F
Partly Cloudy
66 °F
Heavy Rain
83 °F
T-storms Likely then Chance Showers
68 °F
Mostly Sunny
86 °F
Mostly Clear
57 °F
Sunny
82 °F
Mostly Clear
61 °F
Mostly Sunny then Chance Showers
85 °F
Chance Showers then Partly Cloudy
61 °F
Sunny
82 °F
Partly Cloudy
62 °F
Mostly Sunny
82 °F

Today

Mostly sunny, with a high near 86. Northeast wind around 5 mph.

Tonight

Partly cloudy, with a low around 66. Southeast wind around 5 mph becoming calm after midnight.

Thursday

Showers and thunderstorms likely, mainly after 2pm. Some of the storms could produce gusty winds and heavy rain. Mostly cloudy, with a high near 83. Southeast wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

Thursday Night

Showers and thunderstorms likely, mainly before 8pm. Mostly cloudy, with a low around 68. South wind around 5 mph becoming west after midnight. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

Friday

Mostly sunny, with a high near 86. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.

Friday Night

Mostly clear, with a low around 57.

Saturday

Sunny, with a high near 82.

Saturday Night

Mostly clear, with a low around 61.

Sunday

A chance of showers after 2pm. Partly sunny, with a high near 85. Chance of precipitation is 40%.

Sunday Night

A chance of showers before 8pm. Partly cloudy, with a low around 61. Chance of precipitation is 30%.

Monday

Sunny, with a high near 82.

Monday Night

Partly cloudy, with a low around 62.

Tuesday

Mostly sunny, with a high near 82.

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Decision-Making Dilemma: May & Spring 2021 Recaps

June 6, 2021 - 4:03pm -- Dave Robinson

A waterspout over Barnegat Bay on May 8th near Seaside Heights

Weather often varies from week-to-week and even day-to-day during the spring transition season. Such was certainly the case in spring 2021, as will be recapped later in this report. However, when it came to such “weather indecision,” May 2021 took the cake. Starting off somewhat damp with seasonable temperatures, a prolonged period of exceedingly dry weather ensued, first accompanied by cooler-than-normal temperatures and frosty mornings, and later by summer-like heat. As several wildfires broke out and soil moisture vanished, concerns of early-summer drought arose. Then along came one of the coolest Memorial Day weekends on record, accompanied by more than an average May’s worth of rain in some locations. This led to frequent decision making amongst farmers, gardeners, water resource managers, utility companies and customers, and day trippers. All were left wondering what might come next! Cicadas perhaps?

With the thermometer up and down throughout May, the statewide average temperature of 61.0° was just 0.2° below the new 1991–2020 normal. This ranked as the 47th mildest May since 1895. The average maximum of 73.0° was 0.7° above normal, while the 49.0° average minimum was 1.2° below normal. This is illustrative of a month that had many clear days and cool nights with low humidity. Despite dry conditions for most of the month, monthly precipitation came in close to normal, averaging 3.95” across NJ. This is 0.20” above normal, ranking 48th wettest of the past 127 years. Far south and west central areas were driest, while the central coast and northeast saw the most rain. Unlike last May, no snow was observed.

Spring Mix: April 2021 Recap

May 6, 2021 - 3:56pm -- Dave Robinson

Daffodils gardens in Colonial Park in Franklin Township on April 25th

While April 2021 did not have a flare for the dramatic, it did provide a bit of a last look at winter and a glimpse ahead to summer. Overall, it was milder and drier than normal, but not exceedingly so for either variable. The statewide average temperature of 52.6° was 1.1° above the 1991–2020 normal*. Compared to an average over the 1895–present period, the temperature was 2.9° on the plus side, thus explaining the 2021 ranking as the 17th warmest April since 1895. Precipitation averaged 2.47”, which was 1.23” below normal and ranks as the 22nd driest. Coastal areas were wettest with approximately 3.50”–4.50” of rain, a good portion of the state received 2.50”–3.50”, while scattered areas were under 2.50” (Figure 1). Statewide and divisional snowfall came in at a trace.

The Wind Doth Blow: March 2021 Recap

April 8, 2021 - 11:17am -- Dave Robinson

An aerial view of a wildfire in Lakewood on March 14th

With March being a transitional weather and climate month, there are often pronounced differences in conditions from one day or week to the next. The third month of 2021 did not disappoint in several such respects. Swings in barometric pressure as storms and high pressure systems swung through the Northeast led to 16 days with one or more Rutgers NJ Weather Network stations gusting to 40 mph or higher, with 11 of those days exceeding 50 mph. Maximum temperatures exceeded 65° on 12 days (two days had record highs in some locations), while minimum temperatures fell below 19° on 13 days. Walpack, situated in a Sussex County valley, recorded the state’s lowest (21°) and highest (67°) temperatures on a single day (22nd) and just missed this again on the 30th. There was a two-week interval with virtually no precipitation, culminating in several wildfires on the 14th, yet five events occurred where rain accumulated to 0.98” in one or more locations. Finally, a record of sorts was tied as the statewide average snowfall totaled 0.0”, something observed eight other Marches in the past 127 years. The past two Marches are the only ones with back-to-back zero totals.

Statewide precipitation averaged 4.03”, which is 0.18” below the 1991–2020 average*. This made for the 58th wettest (70th driest) since 1895. Northern NJ was driest, coming in at 3.28” (-0.73, 48th driest), the south averaged 4.47” (+0.15”, 42nd wettest), and the coast 4.68” (+0.26”, 38th wettest). The southeast saw the most rain and northeast and central regions the least (Figure 1).

March temperature average 43.9°, which is 2.9° above the 1991–2020 average and the 14th mildest on record. The average high was 54.7° (+3.8°, 13th mildest) and average low was 33.0° (+1.8°, 19th mildest). The north averaged 41.2° (+2.4°, 19th mildest), south 45.6° (+3.2°, 13th mildest), and the coast 45.1° (+2.9°, 13th mildest).

Anything but Boring: February 2021 and Winter 2020/21 Recaps

March 8, 2021 - 3:51pm -- Dave Robinson

Wintry scene

Fate was clearly tempted when last month’s report was entitled: “Pretty Darn Boring.” Not that this wasn’t a truthful statement from both meteorological and climatological perspectives. So now this month’s title, being just as legitimate as January’s. The turnaround began in the waning hours of January 31st when what proved to be an impactful, long-lasting coastal storm began to invade the Garden State. This major event was followed by a series of storms that resulted in record or near record-setting monthly snowfall totals in northern and central regions and quite wet conditions in the south.

Statewide precipitation (rain and melted snowfall) averaged 4.89” in February. This was 2.03” above the 1991–2020 average and ranks as the 14th wettest February in 127 years of record keeping. The coastal south averaged 5.91” (+2.84”), ranking as 6th wettest. The remainder of the south came in with 5.09” (+2.20”, 11th) and the north 4.44” (+1.65”, 19th). More specifically, the southeast and central areas were wettest and the southwest and far north least wet.

While plenty of precipitation fell throughout the state, it was more often than not in the form of rain across the southern third of NJ, while central and northern areas were visited by one major snowstorm and a series of modest ones. All told, the statewide average snowfall was 23.5”. This is 15.3” above the 1991–2020 average and ranked as the 7th snowiest February.

Pretty Darn Boring: January 2021 Recap

February 9, 2021 - 10:04pm -- Dave Robinson

Snowfall map for January 3rd-4th

The first month of 2021 lacked major storms, whether wet or white, and temperatures rarely were either quite mild or very cold. Thus the title of this report. Yes, the last day of the month turned snowy, the harbinger of anything but a boring start to February, but that’s to be covered next month. The January statewide average temperature was 33.7°. This was 3.0° above the 1981–2010 normal and ranks as the 26th mildest January in the past 127 years. The average high was 41.1°, which is 1.8° above normal and ranks 34th mildest, while the average low of 26.3° was 4.2° above normal, ranking 20th mildest.

January precipitation (rain and melted snow) averaged 1.99” across the state, which is 1.41” below normal and ranks 13th driest since 1895. The north averaged 1.93” (-1.48”, 18th driest), the south 2.02” (-1.37”, 13th driest), and the coast 2.19” (-1.25”, 17th driest). Generally, the eastern half of the state was wetter (particularly the northeast) than the west.

A Mixed Bag, and A Blow Torch Year: December & Annual 2020 Recaps

January 7, 2021 - 4:43pm -- Dave Robinson

Drone photos of tidal flooding near the morning high tide on December 17th

The statewide average temperature during this last month of 2020 averaged 37.0°. This was 1.8° above the 1981–2010 normal and ranks as the 22nd mildest December in the 126-year record that dates back to 1895. Northern and southern portions of NJ had similar departures and rankings.

December precipitation (rain and the liquid equivalent of snow and sleet) averaged 6.24”. This includes rain measured at National Weather Service Cooperative Observing stations on the morning of December 1st but does not include rain measured at these stations for the 24 hours ending on the morning of January 1st. See an explanation of the November 30th–December 1st measurement in the November report. The monthly value is 2.39” above average and ranks as the 11th highest December precipitation total on record. North Jersey averaged 6.73”, which is 2.78” above average and ranks 7th wettest. The south came in at 5.89”, which is 2.10” above average and ranks 17th wettest. The coast averaged 6.43”, which is 2.67” above average and ranks 11th wettest.

ONJSC's Top 10 NJ Weather and Climate Events of 2020

January 2, 2021 - 12:51pm -- Dave Robinson

Time series of July average temperatures in NJ from 1895 through 2020

For the 12th consecutive year, we in the state climate office have evaluated the myriad daily, monthly, and annual observations gathered across New Jersey during the course of the year to choose what we feel were the most significant and impactful 10 weather and climate events. More about each event can be found in the monthly narratives posted on our website. You might be tempted to rearrange the rankings, particularly as some of the events on 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! Unless stated otherwise, statewide values are based on an average of several dozen stations. The period of record for monthly, seasonal, and annual departures is 1981–2010; while for extremes and rankings it is from 1895–present. Observations are mainly drawn from National Weather Service Cooperative Observing Program stations, Rutgers NJ Weather Network stations, and NJ Community Collaborative Rain, Hail and Snow Network locations.

The Heat Goes On: November & Fall 2020 Recaps

December 7, 2020 - 8:43pm -- Dave Robinson

CoCoRaHS rain gauge

November 2020 enters the New Jersey climate record book as the third warmest (tied with 2009). The statewide mean of 49.2° was 4.0° above the 1981–2010 normal. This month joins six Novembers from this century among the seven warmest of the past 126 years. Six of the past 12 months have ranked in the top nine for warmth. Of the first 11 months of 2020, only April and May averaged below normal. The average temperature for the first 11 months is 57.1°. This is 2.7° above normal and ranks as the second warmest such interval. Only 2012 was warmer, with both years likely to retain this ranking for the calendar year unless an extremely cold or warm December occurs, which, as this report is written, appears unlikely.

Statewide precipitation total for November was 3.91”. This was 0.30” above the 1981–2010 normal and ranks as the 43rd wettest of the past 126 years. The southern half of the state was on the wetter side of normal while the north on the dry side. This was seen in the divisional numbers that had the south come in with 4.43”, which is 0.98” above average 33rd wettest, while the north averaged 3.09”, which is 0.77” below average and ranks 78th wettest (49th driest).

A Transition Month for Sure: October 2020 Recap

November 5, 2020 - 1:52pm -- Dave Robinson

Dew spider web on the morning of October 14th in Sussex County

As the warmth of summer transitions to the cold of winter, New Jersey weather conditions can vary markedly from week to week. Such was the case during October 2020, with abundant precipitation occurring from the remnants of two hurricanes, an episode of measurable snow in the north, several weeks of quite dry conditions, a number of comfortably warm days, and the first frost and freeze of the season for many locations. Put this all together and October proved to be milder and wetter than normal. The statewide monthly average temperature of 57.2° was 2.7° above the 1981–2010 mean. This ranks as the 18th mildest (tied with 1963 and 1931) over the 126 years extending back to 1895. Southern areas were warmer than northern ones in terms of actual temperature and departure from normal. The 58.8° average in the south was 3.2° above normal and ranked 15th warmest. The north averaged 54.4°, which was 2.0° on the plus side and ranking 27th mildest.

It took a wet final week of the month to push precipitation totals to the plus side of normal. The 5.15” statewide monthly average was 1.26” above normal and ranked as the 24th wettest on record. Somewhat like temperatures, there was north-south disparity. The south averaged 5.36”, which is 1.73” above normal and ranks 20th wettest. The north averaged 4.64”, which is 0.33” above normal and ranks 36th wettest. Dry conditions prevailed, most notably in the northwest, with coastal reaches wettest. Snow fell in the north on the 30th and will be discussed below.

Up and Down But in the End Quite Average: September 2020 Recap

October 6, 2020 - 1:08pm -- Dave Robinson

Smokey sunset on September 15th

September 2020 was a month of widely-varying temperatures, several episodes of heavy precipitation, and an extended dry spell. Put it all together and conditions averaged quite close to normal. The statewide monthly average temperature of 66.8° was 1.0° above the 1981–2010 mean. While it was the seventh month of 2020 to average above normal, it was the first of these not to rank in the top 10 for warmth. Rather, it ranked 33rd warmest of the past 126 Septembers. Divisional departures from normal ranged from +0.7° in the north to +1.5° along the coast. The statewide average maximum temperature was 76.6°, which is 0.3° above normal and ranks 47th warmest. The average minimum of 56.9° was 1.6° on the warm side and ranked 24th mildest. High temperatures were likely reduced by several degrees during a mid-month period when a veil of smoke from western US forest fires blanketed the sky at an altitude of about 15,000 feet when skies otherwise would have been blue, especially on the 15th–16th. It is uncertain if this kept minimum temperatures somewhat warmer than they would otherwise have been. A cold front moved through from the northwest on the 18th, clearing the skies and sending temperatures plummeting. What followed was a four-day spell of temperatures that were well below average, including four nights with below-freezing temperatures at three to four Rutgers NJ Weather Network sites. While freezes resulting from cold air draining into valleys in some northern locations are not unprecedented before the end of astronomical summer, it is highly unusual for the cold to persist over four consecutive nights.

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