Climate and monthly weather forecastLake Hopatcong, NJ
Climate and monthly weather forecast
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
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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.
Throughout the year, there are 160.1 rainfall days, and 35.87" (911mm) of precipitation is accumulated.
Months with snowfall are January through May, October through December.
Throughout the year, in Lake Hopatcong, there are 40.2 snowfall days, and 23.62" (600mm) of snow is accumulated.
The months with the highest humidity are February, October and December, with an average relative humidity of 81%.
February is the month with the most snowfall. Snow falls for 10.8 days and accumulates 5.71" (145mm) of snow.
February has the least sunshine of the year, with an average of 4.3h of sunshine.
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.
April is the least humid month, with an average relative humidity of 76%.
In Lake Hopatcong, snow does not fall in June through September.
The month with the longest days is June, with an average of 15h and 6min of daylight.
June is the month with the highest UV index, with an average maximum UV index of 6.
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).
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.
July has the most sunshine of the year in Lake Hopatcong, with an average of 10h of sunshine.
September is the month with the least rainfall. Rain falls for 12.5 days and accumulates 2.05" (52mm) of precipitation.
December has the shortest days of the year, with an average of 9h and 18min of daylight.
The month with the lowest UV index is December, with an average maximum UV index of 1.
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 in January:
30.07"Hg - Average pressure in February:
30.04"Hg - Average pressure in March:
30.06"Hg - Average pressure in April:
29.98"Hg - Average pressure in May:
30.01"Hg - Average pressure in June:
29.93"Hg
- Average pressure in July:
29.96"Hg - Average pressure in August:
29.99"Hg - Average pressure in September:
30.06"Hg - Average pressure in October:
30.02"Hg - Average pressure in November:
30.11"Hg - Average pressure in December:
30.08"Hg
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 in January:
8mph - Average wind speed in February:
7.9mph - Average wind speed in March:
8.1mph - Average wind speed in April:
7.7mph - Average wind speed in May:
6.2mph - Average wind speed in June:
5.8mph
- Average wind speed in July:
5.1mph - Average wind speed in August:
5mph - Average wind speed in September:
5.5mph - Average wind speed in October:
6.5mph - Average wind speed in November:
6.9mph - Average wind speed in December:
7.3mph
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
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 in January:
2.44" - Average rainfall in February:
2.44" - Average rainfall in March:
2.95" - Average rainfall in April:
3.19" - Average rainfall in May:
3.35" - Average rainfall in June:
3.15"
- Average rainfall in July:
3.66" - Average rainfall in August:
3.11" - Average rainfall in September:
2.05" - Average rainfall in October:
3.35" - Average rainfall in November:
2.64" - Average rainfall in December:
3.54"
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 in January:
7.5 days - Average rainfall days in February:
8.6 days - Average rainfall days in March:
12 days - Average rainfall days in April:
16.3 days - Average rainfall days in May:
17.4 days - Average rainfall days in June:
17.3 days
- Average rainfall days in July:
17.4 days - Average rainfall days in August:
16.5 days - Average rainfall days in September:
12.5 days - Average rainfall days in October:
13.6 days - Average rainfall days in November:
10 days - Average rainfall days in December:
11 days
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 in January:
5.31" - Average snowfall in February:
5.71" - Average snowfall in March:
5.59" - Average snowfall in April:
0.39" - Average snowfall in May:
0.51" - Average snowfall in June:
0"
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 in January:
10.2 days - Average snowfall days in February:
10.8 days - Average snowfall days in March:
8.1 days - Average snowfall days in April:
1.6 days - Average snowfall days in May:
0.2 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0.3 days - Average snowfall days in November:
2.3 days - Average snowfall days in December:
6.7 days
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 in January:
9h and 36min - Average daylight in February:
10h and 42min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 18min - Average daylight in May:
14h and 30min - Average daylight in June:
15h and 6min
- Average daylight in July:
14h and 48min - Average daylight in August:
13h and 48min - Average daylight in September:
12h and 30min - Average daylight in October:
11h and 6min - Average daylight in November:
9h and 54min - Average daylight in December:
9h and 18min
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).
- Average sunshine in January:
4h and 36min - Average sunshine in February:
4h and 18min - Average sunshine in March:
5h and 48min - Average sunshine in April:
7h and 42min - Average sunshine in May:
8h and 0min - Average sunshine in June:
9h and 12min
- Average sunshine in July:
10h and 0min - Average sunshine in August:
9h and 42min - Average sunshine in September:
8h and 18min - Average sunshine in October:
5h and 18min - Average sunshine in November:
5h and 12min - Average sunshine in December:
4h and 36min
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 in January:
16.1 days - Average sunshine days in February:
12.3 days - Average sunshine days in March:
13 days - Average sunshine days in April:
11.8 days - Average sunshine days in May:
11.8 days - Average sunshine days in June:
10.6 days
- Average sunshine days in July:
11 days - Average sunshine days in August:
12.3 days - Average sunshine days in September:
15.6 days - Average sunshine days in October:
15.3 days - Average sunshine days in November:
16.4 days - Average sunshine days in December:
15.2 days
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 UV index
Lake Hopatcong, NJ
The month with the highest UV index is June (UV index 6).
The month with the lowest UV index is December (UV index 1).
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
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).
