Climate and monthly weather forecast
Rocky Hill, NJ

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Weather in January

January, the same as December, is a wintry winter month in Rocky Hill, New Jersey, with an average temperature varying between 36.9°F (2.7°C) and 24.3°F (-4.3°C). Rocky Hill's January weather, marked by an average high temperature of 36.9°F (2.7°C) and an average low temperature of 24.3°F (-4.3°C), is the coldest in the year. Weather in January »

Weather in February

February, the last month of the winter in Rocky Hill, is also an icy month, with temperature in the range of an average low of 26.1°F (-3.3°C) and an average high of 39.9°F (4.4°C). February records an average high-temperature of a still icy 39.9°F (4.4°C), indicating a minor variation from the preceding month. Weather in February »

Weather in March

March, the first month of the spring in Rocky Hill, is a frosty month, with an average temperature fluctuating between 48.6°F (9.2°C) and 33.3°F (0.7°C). The shift from February to March introduces a subtle increase in the average high-temperature, moving from a cold 39.9°F (4.4°C) to a chilly 48.6°F (9.2°C). Weather in March »

Weather in April

April in Rocky Hill, New Jersey, is a mild spring month, with an average temperature ranging between min 43.3°F (6.3°C) and max 60.4°F (15.8°C). April's onset brings a temperature rise, moving from a frosty 48.6°F (9.2°C) in March to a moderate 60.4°F (15.8°C). Weather in April »

Weather in May

May, the last month of the spring in Rocky Hill, is a pleasant month, with an average temperature varying between 53.2°F (11.8°C) and 70.5°F (21.4°C). In Rocky Hill, stepping into May brings a temperature increase, moving up from April's refreshing 60.4°F (15.8°C) to an agreeable 70.5°F (21.4°C). Weather in May »

Weather in June

June, the first month of the summer in Rocky Hill, is a warm month, with an average temperature fluctuating between 61°F (16.1°C) and 78.4°F (25.8°C). As Rocky Hill welcomes June, the average high-temperature sees a modest rise, transitioning from an agreeable 70.5°F (21.4°C) in May to a moderately hot 78.4°F (25.8°C). Weather in June »

Weather in July

July, the same as June, is a moderately hot summer month in Rocky Hill, New Jersey, with an average temperature ranging between min 66.9°F (19.4°C) and max 84.7°F (29.3°C). July stands out as Rocky Hill's warmest month, with an average high-temperature of 84.7°F (29.3°C) and a low-temperature of 66.9°F (19.4°C). In July, the average heat index is computed to be a tropical 93.2°F (34°C). Weather in July »

Weather in August

The last month of the summer, August, is another warm month in Rocky Hill, New Jersey, with an average temperature varying between 65.8°F (18.8°C) and 82.9°F (28.3°C). The commencement of August records an average high-temperature of a still warm 82.9°F (28.3°C), barely varying from July's 84.7°F (29.3°C). Weather in August »

Weather in September

September, the first month of the autumn in Rocky Hill, is still a warm month, with an average temperature ranging between min 59°F (15°C) and max 75.7°F (24.3°C). The beginning of September brings a slight decrease in the average high-temperature, transitioning from 82.9°F (28.3°C) in August to a still moderately hot 75.7°F (24.3°C). Weather in September »

Weather in October

October, like September, in Rocky Hill, New Jersey, is another comfortable autumn month, with an average temperature varying between 49.1°F (9.5°C) and 63.9°F (17.7°C). A subtle decrease in the average high-temperature marks October, falling from September's warm 75.7°F (24.3°C) to a refreshing 63.9°F (17.7°C). Weather in October »

Weather in November

November, the last month of the autumn in Rocky Hill, is also a fresh month, with an average temperature varying between 51.8°F (11°C) and 37.8°F (3.2°C). In Rocky Hill, entering November brings a temperature decrement, reducing from October's refreshing 63.9°F (17.7°C) to a fresh 51.8°F (11°C). Weather in November »

Weather in December

The first month of the winter, December, is also a frosty month in Rocky Hill, New Jersey, with an average temperature varying between 31.1°F (-0.5°C) and 43°F (6.1°C). The onset of December is marked by a minor decrease in temperature, transitioning from a fresh 51.8°F (11°C) in November to a frosty 43°F (6.1°C). Weather in December »
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Frequently asked questions

What part of the year is the coldest in Rocky Hill?

In Rocky Hill, the lowest temperatures are generally noted in January, averaging a high of 36.9°F (2.7°C) and a low of 24.3°F (-4.3°C).

How much does it rain in Rocky Hill?

Throughout the year, in Rocky Hill, New Jersey, there are 119.3 rainfall days, and 12.72" (323mm) of precipitation is accumulated.

When does it snow in Rocky Hill?

January through May, November and December are months with snowfall in Rocky Hill, New Jersey.

How many days does it snow in Rocky Hill?

Throughout the year, in Rocky Hill, there are 16.4 snowfall days, and 4.41" (112mm) of snow is accumulated.

What are the months with the lowest UV index in Rocky Hill?

The months with the lowest UV index in Rocky Hill, New Jersey, are January through March, November and December, with an average maximum UV index of 2.

What is the month with the least sunshine in Rocky Hill?

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

When does it snow the most in Rocky Hill?

The month with the most snowfall in Rocky Hill is March, when snow falls for 3.7 days and typically aggregates up to 1.42" (36mm) of snow.

When is Daylight Saving Time (DST) in Rocky Hill?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Rocky Hill, New Jersey, 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 is the least humid month in Rocky Hill?

With an average relative humidity of 73%, April is the least humid month in Rocky Hill, New Jersey.

When it does not snow in Rocky Hill?

In Rocky Hill, snow does not fall in June through October.

When are the longest days in Rocky Hill?

With an average of 15h and 0min of daylight, June has the longest days of the year in Rocky Hill, New Jersey.

What are the months with the highest UV index in Rocky Hill?

June through August, with an average maximum UV index of 6, are months with the highest UV index in Rocky Hill, New Jersey.

What month is the hottest in Rocky Hill?

Rocky Hill's warmest weather arrives in July, when temperatures average a high of 84.7°F (29.3°C) and a low of 66.9°F (19.4°C).

What is the rainiest month in Rocky Hill?

July is the month with the most rainfall. Rain falls for 13.9 days and accumulates 1.69" (43mm) of precipitation.

What month has the most sunshine in Rocky Hill?

July has the most sunshine of the year in Rocky Hill, with an average of 10.5h of sunshine.

What is the driest month in Rocky Hill?

The month with the least rainfall in Rocky Hill, New Jersey, is September, when the rain falls for 10 days and typically collects 0.67" (17mm) of precipitation.

What is the most humid month in Rocky Hill?

With an average relative humidity of 79%, October is the most humid month.

What is the month with the shortest days in Rocky Hill?

The month with the shortest days in Rocky Hill is December, with an average of 9h and 18min of daylight.

Average temperature
Rocky Hill, NJ

Average temperature - Rocky Hill, NJ

The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (36.9°F).

The month with the highest average low temperature is July (66.9°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).

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Average pressure
Rocky Hill, NJ

Average pressure - Rocky Hill, 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).

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Average wind speed
Rocky Hill, NJ

Average wind speed - Rocky Hill, NJ

The windiest month (with the highest average wind speed) is March (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).

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Average rainfall
Rocky Hill, NJ

Average rainfall - Rocky Hill, NJ

The wettest month (with the highest rainfall) is July (1.69").
The driest month (with the least rainfall) is September (0.67").

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Average rainfall days
Rocky Hill, NJ

Average rainfall days - Rocky Hill, NJ

The month with the highest number of rainy days is July (13.9 days).
The month with the least rainy days is January (6.1 days).

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Average snowfall
Rocky Hill, NJ

Average snowfall - Rocky Hill, NJ

The month with the highest snowfall is March (1.42").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days
Rocky Hill, NJ

Average snowfall days - Rocky Hill, 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, September and October (0 days).

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Average daylight / Average sunshine
Rocky Hill, NJ

Average daylight / Average sunshine - Rocky Hill, 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 18min).

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).

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Average sunshine days
Rocky Hill, NJ

Average sunshine days - Rocky Hill, NJ

The month with the most sunshine days is January (21.8 days).
The month with the least sunshine days is July (13.3 days).

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Average UV index
Rocky Hill, NJ

Average UV index - Rocky Hill, NJ

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

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Average cloud cover
Rocky Hill, NJ

Average cloud cover - Rocky Hill, NJ

The months with the most cloud cover are February, March and December (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 33).

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Average visibility
Rocky Hill, NJ

Average visibility - Rocky Hill, 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).

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Rocky Hill, New Jersey, USA

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