Climate and monthly weather forecast
Pennington, NJ

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Weather in January

January, the same as December, is a wintry winter month in Pennington, New Jersey, with temperature in the range of an average high of 36.9°F (2.7°C) and an average low of 24.3°F (-4.3°C). Pennington's January weather, with an average high temperature of 36.9°F (2.7°C) and an average low temperature of 24.3°F (-4.3°C), tends to be the coldest of the year. Weather in January »

Weather in February

February, the last month of the winter in Pennington, is also an icy month, with an average temperature ranging between min 26.2°F (-3.2°C) and max 40.1°F (4.5°C). The shift into February records an average high-temperature of a still cold 40.1°F (4.5°C), subtly varied from January's 36.9°F (2.7°C). Weather in February »

Weather in March

March, the first month of the spring in Pennington, is a frosty month, with an average temperature varying between 33.1°F (0.6°C) and 48.4°F (9.1°C). A subtle rise in the average high-temperature is observed during March, adjusting from a cold 40.1°F (4.5°C) in February to a frosty 48.4°F (9.1°C). Weather in March »

Weather in April

April is a moderate spring month in Pennington, New Jersey, with temperature in the range of an average high of 60.4°F (15.8°C) and an average low of 43.3°F (6.3°C). As Pennington enters April, the average high-temperature increases from the a chilly 48.4°F (9.1°C) of March to a refreshing 60.4°F (15.8°C). Weather in April »

Weather in May

The last month of the spring, May, is an agreeable month in Pennington, New Jersey, with an average temperature ranging between max 70.9°F (21.6°C) and min 53.2°F (11.8°C). May's onset brings a temperature rise, moving from a moderate 60.4°F (15.8°C) in April to an agreeable 70.9°F (21.6°C). Weather in May »

Weather in June

The first month of the summer, June, is a warm month in Pennington, New Jersey, with an average temperature varying between 79.3°F (26.3°C) and 60.8°F (16°C). With the onset of June, Pennington's average high-temperature sees a modest rise, moving from May's pleasant 70.9°F (21.6°C) to a moderately hot 79.3°F (26.3°C). Weather in June »

Weather in July

July, like June, in Pennington, New Jersey, is a moderately hot summer month, with an average temperature fluctuating between 85.1°F (29.5°C) and 67.3°F (19.6°C). Pennington's July weather reaches an average high of 85.1°F (29.5°C) and an average low of 67.3°F (19.6°C), making it the warmest month. July's mean heat index is computed to be a sweltering 95°F (35°C). Weather in July »

Weather in August

August, the last month of the summer in Pennington, is another warm month, with an average temperature ranging between min 65.8°F (18.8°C) and max 82.9°F (28.3°C). The advent of August denotes an average high-temperature of a still warm 82.9°F (28.3°C), subtly different from July's 85.1°F (29.5°C). Weather in August »

Weather in September

The first month of the autumn, September, is also a moderately hot month in Pennington, New Jersey, with temperature in the range of an average low of 59°F (15°C) and an average high of 76.1°F (24.5°C). The start of September involves a subtle temperature drop, shifting from a moderately hot 82.9°F (28.3°C) in August to a still warm 76.1°F (24.5°C). Weather in September »

Weather in October

October, like September, in Pennington, New Jersey, is another refreshing autumn month, with temperature in the range of an average low of 49.3°F (9.6°C) and an average high of 63.9°F (17.7°C). The onset of October introduces a moderate change in Pennington's weather, with average high-temperatures falling from September's moderately hot 76.1°F (24.5°C) to a comfortable 63.9°F (17.7°C). Weather in October »

Weather in November

November, the last month of the autumn in Pennington, is also a fresh month, with temperature in the range of an average high of 52°F (11.1°C) and an average low of 37.9°F (3.3°C). November is characterized by a reduction in the average high-temperature, from a refreshing 63.9°F (17.7°C) in October to a fresh 52°F (11.1°C). Weather in November »

Weather in December

December, the first month of the winter in Pennington, is still a chilly month, with temperature in the range of an average high of 42.8°F (6°C) and an average low of 31.5°F (-0.3°C). In Pennington, the beginning of December is marked by a lowered average high-temperature, shifting from November's cool 52°F (11.1°C) to a frosty 42.8°F (6°C). Weather in December »
Updated: Aug 17, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the coldest months?

Temperature records in Pennington mark January as the coldest month, with highs averaging 36.9°F (2.7°C) and lows at 24.3°F (-4.3°C).

What is the driest month?

January is the month with the least rainfall. Rain falls for 8.1 days and accumulates 0.87" (22mm) of precipitation.

How many days does it rain?

In Pennington, during the entire year, the rain falls for 138.1 days and collects up to 16.5" (419mm) of precipitation.

When does it snow?

Months with snowfall are January through May, November and December.

How many days does it snow in Pennington?

In Pennington, New Jersey, during the entire year, snow falls for 15.6 days and aggregates up to 2.8" (71mm) of snow.

When is the lowest UV index?

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index.

What is the most humid month?

February, October and December, with an average relative humidity of 78%, are most humid months.

When does it snow the most?

February is the month with the most snowfall. Snow falls for 4.5 days and accumulates 0.71" (18mm) of snow.

What is the month with the least sunshine?

February has the least sunshine of the year, with an average of 4.8h of sunshine.

When is Daylight Saving Time (DST)?

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.

What are the least humid months?

April and July, with an average relative humidity of 73%, are the least humid months.

What is the month with the highest UV index?

May through August, with an average maximum UV index of 6, are months with the highest UV index.

When it does not snow?

June through October are months without snowfall.

When are the longest days?

The month with the longest days is June, with an average of 15h and 0min of daylight.

What are the warmest months?

Pennington's warmest temperatures are experienced in July, with average high temperatures of 85.1°F (29.5°C) and lows of 67.3°F (19.6°C).

What is the rainiest month?

July is the month with the most rainfall. Rain falls for 15.8 days and accumulates 2.24" (57mm) of precipitation.

What month has the most sunshine?

July has the most sunshine of the year in Pennington, with an average of 10.6h of sunshine.

What is the month with the shortest days?

With an average of 9h and 24min of daylight, December has the shortest days of the year.

Average temperature
Pennington, NJ

Average temperature - Pennington, NJ

The warmest month (with the highest average high temperature) is July (85.1°F).
The month with the lowest average high temperature is January (36.9°F).

The month with the highest average low temperature is July (67.3°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).

Average pressure
Pennington, NJ

Average pressure - Pennington, NJ

The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed
Pennington, NJ

Average wind speed - Pennington, NJ

The windiest month (with the highest average wind speed) is March (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

Average humidity
Pennington, NJ

Average humidity - Pennington, NJ

The months with the highest relative humidity are February, October and December (78%).
The months with the lowest relative humidity are April and July (73%).

Average rainfall
Pennington, NJ

Average rainfall - Pennington, NJ

The wettest month (with the highest rainfall) is July (2.24").
The driest month (with the least rainfall) is January (0.87").

Average rainfall days
Pennington, NJ

Average rainfall days - Pennington, NJ

The month with the highest number of rainy days is July (15.8 days).
The month with the least rainy days is November (7.2 days).

Average snowfall
Pennington, NJ

Average snowfall - Pennington, NJ

The month with the highest snowfall is February (0.71").
The months with the least snowfall are June, July, August, September and October (0").

Average snowfall days
Pennington, NJ

Average snowfall days - Pennington, NJ

The month with the highest number of snowfall days is January (4.6 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight / Average sunshine
Pennington, NJ

Average daylight / Average sunshine - Pennington, NJ

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).

Average sunshine days
Pennington, NJ

Average sunshine days - Pennington, NJ

The month with the most sunshine days is January (20.7 days).
The month with the least sunshine days is July (12.3 days).

Average UV index
Pennington, NJ

Average UV index - Pennington, NJ

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

Average visibility
Pennington, NJ

Average visibility - Pennington, NJ

The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).

Pennington, New Jersey, USA

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