Climate and monthly weather forecast
Lake Hopatcong, NJ

Share

Weather in January

January, like December, in Lake Hopatcong, New Jersey, is a wintry winter month, with an average temperature varying between 20.7°F (-6.3°C) and 33.3°F (0.7°C). Lake Hopatcong's temperature records reveal January as the coldest month, marked by average highs of 33.3°F (0.7°C) and lows of 20.7°F (-6.3°C). Weather in January »

Weather in February

February, the last month of the winter in Lake Hopatcong, is another cold month, with temperature in the range of an average low of 21.9°F (-5.6°C) and an average high of 36.9°F (2.7°C). The transition from January to February sees average high-temperatures adjusting to a still wintry 36.9°F (2.7°C), from a not significantly different 33.3°F (0.7°C). Weather in February »

Weather in March

The first month of the spring, March, is a chilly month in Lake Hopatcong, New Jersey, with temperature in the range of an average high of 45°F (7.2°C) and an average low of 29.7°F (-1.3°C). The onset of March brings a minor temperature shift, with the average high-temperature moving from a wintry 36.9°F (2.7°C) in February to a chilly 45°F (7.2°C). Weather in March »

Weather in April

April is a moderate spring month in Lake Hopatcong, New Jersey, with temperature in the range of an average high of 57.7°F (14.3°C) and an average low of 39.9°F (4.4°C). April's arrival brings a temperature shift, moving from a frosty 45°F (7.2°C) in March to a mild 57.7°F (14.3°C). Weather in April »

Weather in May

The last month of the spring, May, is an agreeable month in Lake Hopatcong, New Jersey, with an average temperature varying between 68.2°F (20.1°C) and 49.6°F (9.8°C). Lake Hopatcong in May shows a temperature shift, moving from an average high of a moderate 57.7°F (14.3°C) in April to a pleasant 68.2°F (20.1°C). Weather in May »

Weather in June

June, the first month of the summer in Lake Hopatcong, is a moderately hot month, with an average temperature ranging between min 56.8°F (13.8°C) and max 76.3°F (24.6°C). The shift into June is characterized by a subtle rise in the average high-temperature, transitioning from May's pleasant 68.2°F (20.1°C) to a moderately hot 76.3°F (24.6°C). Weather in June »

Weather in July

July, like June, in Lake Hopatcong, New Jersey, is another warm summer month, with an average temperature fluctuating between 82.4°F (28°C) and 63°F (17.2°C). Temperature readings reach their annual highs in July, averaging 82.4°F (28°C) and a minimum average of 63°F (17.2°C). The heat index for July is calculated to be a hot 89.6°F (32°C). Weather in July »

Weather in August

The last month of the summer, August, is another warm month in Lake Hopatcong, New Jersey, with an average temperature ranging between max 80.4°F (26.9°C) and min 61.3°F (16.3°C). August's advent denotes a minor fluctuation in the average high-temperature to a still warm 80.4°F (26.9°C) from July's 82.4°F (28°C). Weather in August »

Weather in September

The first month of the autumn, September, is also a moderately hot month in Lake Hopatcong, New Jersey, with temperature in the range of an average high of 73.8°F (23.2°C) and an average low of 54.9°F (12.7°C). September's arrival subtly correlates with a reduction in the average high-temperature, down from 80.4°F (26.9°C) in August to a still warm 73.8°F (23.2°C). Weather in September »

Weather in October

October, like September, in Lake Hopatcong, New Jersey, is another enjoyable autumn month, with an average temperature varying between 45°F (7.2°C) and 60.8°F (16°C). Onset of October comes with a temperature decline, the average high falling from a warm 73.8°F (23.2°C) in September to a comfortable 60.8°F (16°C). Weather in October »

Weather in November

November, the last month of the autumn in Lake Hopatcong, is also a frosty month, with an average temperature varying between 48.6°F (9.2°C) and 34.3°F (1.3°C). The arrival of November corresponds with a temperature reduction, down from October's enjoyable 60.8°F (16°C) to a frosty 48.6°F (9.2°C). Weather in November »

Weather in December

December, the first month of the winter in Lake Hopatcong, is also a wintry month, with temperature in the range of an average high of 39.2°F (4°C) and an average low of 27.7°F (-2.4°C). December's onset brings a slight change in high-temperatures, falling from a chilly 48.6°F (9.2°C) in November to an icy 39.2°F (4°C). Weather in December »
Updated: Jul 15, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest time of year?

With average high and low temperatures of 33.3°F (0.7°C) and 20.7°F (-6.3°C) respectively, January is Lake Hopatcong's coldest month.

How many days does it rain?

Throughout the year, there are 160.1 rainfall days, and 35.87" (911mm) of precipitation is accumulated.

When does it snow?

Months with snowfall are January through May, October through December.

How much does it snow in Lake Hopatcong?

Throughout the year, in Lake Hopatcong, there are 40.2 snowfall days, and 23.62" (600mm) of snow is accumulated.

What are the most humid months?

The months with the highest humidity are February, October and December, with an average relative humidity of 81%.

When does it snow the most?

February is the month with the most snowfall. Snow falls for 10.8 days and accumulates 5.71" (145mm) of snow.

What is the month with the least sunshine?

February has the least sunshine of the year, with an average of 4.3h 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 is the least humid month?

April is the least humid month, with an average relative humidity of 76%.

When it does not snow?

In Lake Hopatcong, snow does not fall in June through September.

When are the longest days?

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

What is the month with the highest UV index?

June is the month with the highest UV index, with an average maximum UV index of 6.

What is the warmest month?

July is the warmest month, with the temperature often reaching an average high of 82.4°F (28°C) and an average low of 63°F (17.2°C).

What is the rainiest month?

The month with the most rainfall is July, when the rain falls for 17.4 days and typically aggregates up to 3.66" (93mm) of precipitation.

What month has the most sunshine?

July has the most sunshine of the year in Lake Hopatcong, with an average of 10h of sunshine.

What is the driest month?

September is the month with the least rainfall. Rain falls for 12.5 days and accumulates 2.05" (52mm) of precipitation.

What is the month with the shortest days?

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

What is the month with the lowest UV index?

The month with the lowest UV index is December, with an average maximum UV index of 1.

Average temperature
Lake Hopatcong, NJ

Average temperature - Lake Hopatcong, NJ

The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (33.3°F).

The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (20.7°F).

Average pressure
Lake Hopatcong, NJ

Average pressure - Lake Hopatcong, 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
Lake Hopatcong, NJ

Average wind speed - Lake Hopatcong, NJ

The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest month (with the lowest average wind speed) is August (5mph).

Average humidity
Lake Hopatcong, NJ

Average humidity - Lake Hopatcong, NJ

The months with the highest relative humidity are February, October and December (81%).
The month with the lowest relative humidity is April (76%).

Average rainfall
Lake Hopatcong, NJ

Average rainfall - Lake Hopatcong, NJ

The wettest month (with the highest rainfall) is July (3.66").
The driest month (with the least rainfall) is September (2.05").

Average rainfall days
Lake Hopatcong, NJ

Average rainfall days - Lake Hopatcong, NJ

The months with the highest number of rainy days are May and July (17.4 days).
The month with the least rainy days is January (7.5 days).

Average snowfall
Lake Hopatcong, NJ

Average snowfall - Lake Hopatcong, NJ

The month with the highest snowfall is February (5.71").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days
Lake Hopatcong, NJ

Average snowfall days - Lake Hopatcong, NJ

The month with the highest number of snowfall days is February (10.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight / Average sunshine
Lake Hopatcong, NJ

Average daylight / Average sunshine - Lake Hopatcong, 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).

The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).

Average sunshine days
Lake Hopatcong, NJ

Average sunshine days - Lake Hopatcong, NJ

The month with the most sunshine days is November (16.4 days).
The month with the least sunshine days is June (10.6 days).

Average cloud cover
Lake Hopatcong, NJ

Average cloud cover - Lake Hopatcong, NJ

The months with the most cloud cover are February, March and December (Cloud cover 52).
The months with the least cloud cover are July and August (Cloud cover 37).

Average visibility
Lake Hopatcong, NJ

Average visibility - Lake Hopatcong, NJ

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

Lake Hopatcong, New Jersey, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location