Climate and monthly weather forecast
Parsippany-Troy Hills, NJ

An aerial panorama of Parsippany City in the Troy Hills, New Jersey, with colorful brown and golden trees around the scenic Lake Parsippany
An aerial panorama of Parsippany City in the Troy Hills, New Jersey, with colorful brown and golden trees around the scenic Lake Parsippany

The climate of Parsippany-Troy Hills

Parsippany-Troy Hills, located in New Jersey, USA, features a Cfa climate classification according to the Köppen system. This indicates that the town experiences a Humid subtropical climate with no dry season. The weather can vary quite considerably throughout the year, with monthly average temperatures reaching from 18°F (-7.8°C) in the coldest month to the peak of 86°F (30°C) in the warmest. The area sees rainfall throughout the year, with the lowest recorded being 2.9" (74mm) and the highest, 4.9" (124mm) per month. Daylight hours also vary with the changing seasons, from as fewer as 9.3 to abundant 15.1 hours per day in the sunniest month.

Analyzing climate patterns, it becomes evident that temperature fluctuations are clearly distinct throughout the year. In the colder months, particularly January and February, the average low temperatures shift between 18°F (-7.8°C) and 20°F (-6.7°C). In contrast, July and August see the highest temperatures, reaching 86°F (30°C) and 85°F (29.4°C) respectively.

Rainfall does not exhibit a clear seasonality with precipitation levels staying reasonably consistent throughout the year. The driest month is February with a rainfall of 2.9" (74mm) while the rainiest is September with 4.9" (124mm).

Significant differentiation is also noticeable in terms of daylight hours. December sports the shortest daylight duration with merely 9.3 hours, in distinct contrast to June, when sunlight pours in for a maximum of 15.1 hours on average.

The best time to visit Parsippany-Troy Hills

The best time to visit Parsippany-Troy Hills largely depends on the outdoor activities one prefers. However, considering temperature and daylight hours, May to September could be the most attractive period. During this time, temperatures are comfortably warm, ranging from 62°F (16.7°C) to 85°F (29.4°C) and daylight hours extend from 13.3 to 15.1 a day.

The worst time to visit Parsippany-Troy Hills

In general, December to February are likely the least favorable months for visiting Parsippany-Troy Hills. These winter months bring cold weather, with temperatures plummeting to lows of 18°F (-7.8°C) to 20°F (-6.7°C). Moreover, daylight hours are shortest with an average of 9.3 to 10.7 hours per day.

Spring weather in Parsippany-Troy Hills

Spring witnesses a marked transition in weather conditions in Parsippany-Troy Hills. The high temperatures progress from a chilly 39°F (3.9°C) in March up to a balmy 73°F (22.8°C) in May. The low temperatures follow a congruous trend, rising from 18°F (-7.8°C) to 47°F (8.3°C) in the same period. The rainfall is reasonable, averaging at 4.1" (104mm) in May. Daylight hours also expand considerably, from 12 hours in the beginning of spring to 14.5 by the end of the season.

Summer weather in Parsippany-Troy Hills

The summer months of June through August offer ideal conditions for outdoor activities with temperature highs between 82°F (27.8°C) and 86°F (30°C) and lows around 57°F (13.9°C) to 63°F (17.2°C). Rainfall levels stay robust, with precipitation ranging from 4.4" (112mm) to 4.7" (119mm) per month. Summer also drinks in the highest daylight durations, from 14.5 to 15.1 hours per day.

Autumn weather in Parsippany-Troy Hills

Autumn in Parsippany-Troy Hills witnesses a steady decline in temperature from September to November. High temperatures dip from 78°F (25.6°C) to 55°F (12.8°C) and lows progress from 53°F (11.7°C) to 32°F (0°C). This period observes the highest rainfall of 4.9" (124mm) in September with a modest decrease to 4.1" (104mm) in November. Daylight periods shrink appreciably, from 12.5 hours in September to 9.9 hours in November.

Winter weather in Parsippany-Troy Hills

Winter season in Parsippany-Troy Hills spans from December to February. This period experiences cold temperatures with highs fluctuating between 39°F (3.9°C) and 44°F (6.7°C) and lows from 18°F (-7.8°C) to 24°F (-4.4°C). Precipitation remains moderate with 4.1" (104mm) in December and February. Daylight hours are the fewest, decreasing from 9.9 hours in December to 9.3 in January, with a slight increase to 10.7 in February.

Weather in January

January in Parsippany-Troy Hills, New Jersey, USA, launches the year with the coldest temperatures. The monthly averages fluctuate between 18°F (-7.8°C) at the lowest end and 39°F (3.9°C) on the highest end. Compared with the crisp weather enjoyed in December, January's chill requires increased heating and layered clothing. Weather in January »

Weather in February

The overall temperature in Parsippany-Troy Hills creeps slightly upward in February. The weather maintains a cold grip, ranging from lows at 20°F (-6.7°C) to highs around 42°F (5.6°C). This month exhibits a short leap up from the January freeze, providing a slight sense of warmth against the winter backdrop. Weather in February »

Weather in March

March's weather in Parsippany-Troy Hills presents a transitional phase between winter and spring. March sees an increase in the temperature margins, reaching from 28°F (-2.2°C) to 51°F (10.6°C). With this shift, evidence of the winter chill begins to fade, making way for the gentle onset of spring. Weather in March »

Weather in April

In Parsippany-Troy Hills, April's weather advances a noticeable upgrade in warmth. The mercury column begins to see more activity, indicating temperatures spanning from 38°F (3.3°C) to 62°F (16.7°C). April marks a departure from the cold and enters a phase where jackets become less instrumental. Weather in April »

Weather in May

May's weather in Parsippany-Troy Hills offers an embrace of mild warmth. The climate becomes increasingly pleasant, exhibiting an expanded temperature range of 47°F (8.3°C) at the lower end and 73°F (22.8°C) at the upper. This month indicates an unambiguous summer prelude, with sunny days dominating. Weather in May »

Weather in June

The weather of June in Parsippany-Troy Hills greets the summer with open arms. June records fairly warm temperatures, oscillating between 57°F (13.9°C) and 82°F (27.8°C). This surge confers June with the essence of summer, characterized by longer, warmer days. Weather in June »

Weather in July

July in Parsippany-Troy Hills offers the peak of summer's warmth. The temperature fluctuates between a cool 63°F (17.2°C) and an scorching 86°F (30°C). July stands out as the warmest month of the year, embracing the intensity of the summer sun's heat. Weather in July »

Weather in August

In Parsippany-Troy Hills, the weather during August remains closely knitted with July's heat. The temperature margin parallels the prior month, navigating from 61°F (16.1°C) as the lowest and reaching 85°F (29.4°C) on peak afternoons. Weather in August »

Weather in September

September's weather in Parsippany-Troy Hills charts the commencement of cooler days. Recording a cooling trend, temperatures float between a comfortable 53°F (11.7°C) and a gentle 78°F (25.6°C). As the month progresses, the heat wave from August begins to dissolve, signaling the onset of autumn. Weather in September »

Weather in October

October's weather in Parsippany-Troy Hills reveals a noticeable wind-down in temperatures. The monthly averages drop to lower bounds of 40°F (4.4°C), rising to only 66°F (18.9°C) on warmer days. October creeps deeper into autumn, dressing the city in delightful hues of yellow, orange and red. Weather in October »

Weather in November

November's weather in Parsippany-Troy Hills aides the transition into winter conditions. Lowering the scale significantly, temperatures swing between a cold 32°F (0°C) and a moderate 55°F (12.8°C). The moderate pleasantness of October gives way to this pre-winter chill. Weather in November »

Weather in December

December in Parsippany-Troy Hills unfolds with a definitive return of winter's chill. Freezing temperatures take the stage in this month, registering lows of 24°F (-4.4°C) and highs barely reaching 44°F (6.7°C). The month marks a full circle back to the characteristic cold of the onset of the year. Weather in December »

Frequently asked questions

What time of the year is the coldest in Parsippany-Troy Hills?

Parsippany-Troy Hills records the coldest temperatures in January, averaging a high of 39°F (3.9°C) and a low of 18°F (-7.8°C).

How much does it rain in Parsippany-Troy Hills?

Throughout the year, in Parsippany-Troy Hills, New Jersey, 50.91" (1293mm) of rain is accumulated.

What is the driest month in Parsippany-Troy Hills?

February is the month with the least rainfall in Parsippany-Troy Hills, New Jersey, with 2.91" (74mm) of accumulated precipitation.

When is Daylight Saving Time (DST) in Parsippany-Troy Hills?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.

When are the longest days in Parsippany-Troy Hills?

The month with the longest days is June, with an average of 15h and 6min of daylight.

What time of the year is the hottest in Parsippany-Troy Hills?

The temperatures reach their highest averages in July, with highs of 86°F (30°C) and lows of 63°F (17.2°C).

What is the wettest month in Parsippany-Troy Hills?

The month with the most rainfall in Parsippany-Troy Hills, New Jersey, is September, when 4.88" (124mm) of precipitation is typically aggregated.

What is the month with the shortest days in Parsippany-Troy Hills?

December has the shortest days of the year, with an average of 9h and 18min of daylight.

Average rainfall
Parsippany-Troy Hills, NJ

Average rainfall - Parsippany-Troy Hills, NJ

The wettest month (with the highest rainfall) is September (4.9").
The driest month (with the least rainfall) is February (2.9").


Average daylight
Parsippany-Troy Hills, NJ

Average daylight - Parsippany-Troy Hills, NJ

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).


Parsippany-Troy Hills, New Jersey, USA

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