Climate and monthly weather forecastSussex, NJ
Climate and monthly weather forecast
Weather in January
January, the same as December, is another cold winter month in Sussex, New Jersey, with an average temperature ranging between max 32.7°F (0.4°C) and min 19.8°F (-6.8°C). January proves to be the coldest month, recording an average maximum temperature of 32.7°F (0.4°C) and a minimum temperature of 19.8°F (-6.8°C). Weather in January »Weather in February
The last month of the winter, February, is another cold month in Sussex, New Jersey, with an average temperature varying between 36.3°F (2.4°C) and 21.6°F (-5.8°C). Transitioning into February, Sussex records an average high-temperature of a still icy 36.3°F (2.4°C), almost identical to January's 32.7°F (0.4°C). Weather in February »Weather in March
March, the first month of the spring in Sussex, is a frosty month, with an average temperature ranging between min 28.8°F (-1.8°C) and max 44.4°F (6.9°C). The arrival of March introduces a minor uplift in high-temperatures, adjusting from a wintry 36.3°F (2.4°C) in February to a chilly 44.4°F (6.9°C). Weather in March »Weather in April
April in Sussex, New Jersey, is a mild spring month, with an average temperature varying between 39°F (3.9°C) and 57°F (13.9°C). April's arrival coincides with a rise in the average high-temperature, moving from March's chilly 44.4°F (6.9°C) to a refreshing 57°F (13.9°C). Weather in April »Weather in May
May, the last month of the spring in Sussex, is a pleasant month, with an average temperature ranging between max 68.4°F (20.2°C) and min 48.7°F (9.3°C). The start of May is characterized by an increase in the average high-temperature, transitioning from a mild 57°F (13.9°C) in April to a pleasant 68.4°F (20.2°C). Weather in May »Weather in June
June, the first month of the summer in Sussex, is a warm month, with an average temperature ranging between max 76.5°F (24.7°C) and min 55.6°F (13.1°C). As Sussex transitions into June, a marginal rise in the average high-temperature is observed, moving from a pleasant 68.4°F (20.2°C) in May to a moderately hot 76.5°F (24.7°C). Weather in June »Weather in July
July, like June, in Sussex, New Jersey, is another warm summer month, with an average temperature fluctuating between 61.3°F (16.3°C) and 82.6°F (28.1°C). Sussex's July weather, marked by an average high temperature of 82.6°F (28.1°C) and an average low temperature of 61.3°F (16.3°C), is the warmest in the year. July's mean heat index is computed to be a tropical 89.6°F (32°C). Weather in July »Weather in August
August, the last month of the summer in Sussex, is also a moderately hot month, with an average temperature fluctuating between 80.2°F (26.8°C) and 59.5°F (15.3°C). Sussex experiences a recorded average high-temperature of a still warm 80.2°F (26.8°C) in August, closely aligned with July's 82.6°F (28.1°C). Weather in August »Weather in September
The first month of the autumn, September, is still a warm month in Sussex, New Jersey, with an average temperature varying between 53.4°F (11.9°C) and 73.4°F (23°C). September's arrival subtly correlates with a reduction in the average high-temperature, down from 80.2°F (26.8°C) in August to a still warm 73.4°F (23°C). Weather in September »Weather in October
October, the same as September, in Sussex, New Jersey, is a moderate autumn month, with temperature in the range of an average low of 44.4°F (6.9°C) and an average high of 60.4°F (15.8°C). October shows a mild decline in the average high-temperature, falling from September's warm 73.4°F (23°C) to a mild 60.4°F (15.8°C). Weather in October »Weather in November
The last month of the autumn, November, is also a frosty month in Sussex, New Jersey, with temperature in the range of an average low of 33.4°F (0.8°C) and an average high of 48.4°F (9.1°C). Stepping into November, Sussex observes a temperature decline, with the average high falling from October's moderate 60.4°F (15.8°C) to a frosty 48.4°F (9.1°C). Weather in November »Weather in December
December, the first month of the winter in Sussex, is also an icy month, with an average temperature varying between 26.8°F (-2.9°C) and 38.3°F (3.5°C). Observing a mild shift, the average high-temperature during December reduces from November's chilly 48.4°F (9.1°C) to an icy 38.3°F (3.5°C). Weather in December »Updated: Jul 11, 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
January tends to be the coldest month, with temperatures averaging a daily high of 32.7°F (0.4°C) and a low of 19.8°F (-6.8°C).
In Sussex, during the entire year, the rain falls for 164.9 days and collects up to 31.89" (810mm) of precipitation.
Months with snowfall are January through May, October through December.
In Sussex, during the entire year, snow falls for 36.9 days and aggregates up to 19.84" (504mm) of snow.
The months with the highest humidity are February, October and December, with an average relative humidity of 82%.
February is the month with the most snowfall. Snow falls for 9.8 days and accumulates 5.43" (138mm) of snow.
February has the least sunshine of the year, with an average of 4.2h of sunshine.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Sussex, 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%.
The month with the most rainfall is May, when the rain falls for 18.1 days and typically aggregates up to 3.19" (81mm) of precipitation.
The months with the highest UV index are May through August, with an average maximum UV index of 5.
In Sussex, New Jersey, 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.
July is the warmest month of the year, registering average temperatures as high as 82.6°F (28.1°C) and as low as 61.3°F (16.3°C).
The month with the most sunshine is July, with an average of 10.1h of sunshine.
September is the month with the least rainfall. Rain falls for 11.8 days and accumulates 1.85" (47mm) of precipitation.
With an average of 9h and 18min of daylight, December has the shortest days of the year.
December is the month with the lowest UV index, with an average maximum UV index of 1.
Average temperature
Sussex, NJ
The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (32.7°F).
The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).
Average pressure
Sussex, NJ
- Average pressure in January:
30.06"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
Sussex, NJ
- Average wind speed in January:
7.6mph - Average wind speed in February:
7.6mph - Average wind speed in March:
7.7mph - Average wind speed in April:
7.4mph - Average wind speed in May:
6mph - Average wind speed in June:
5.7mph
- Average wind speed in July:
4.9mph - Average wind speed in August:
4.8mph - Average wind speed in September:
5.3mph - Average wind speed in October:
6.3mph - Average wind speed in November:
6.5mph - Average wind speed in December:
6.9mph
The windiest month (with the highest average wind speed) is March (7.7mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity
Sussex, NJ
The months with the highest relative humidity are February, October and December (82%).
The month with the lowest relative humidity is April (76%).
Average rainfall
Sussex, NJ
- Average rainfall in January:
2.09" - Average rainfall in February:
2.05" - Average rainfall in March:
2.68" - Average rainfall in April:
3.07" - Average rainfall in May:
3.19" - Average rainfall in June:
2.87"
- Average rainfall in July:
3.15" - Average rainfall in August:
2.6" - Average rainfall in September:
1.85" - Average rainfall in October:
3.03" - Average rainfall in November:
2.28" - Average rainfall in December:
3.03"
The wettest month (with the highest rainfall) is May (3.19").
The driest month (with the least rainfall) is September (1.85").
Average rainfall days
Sussex, NJ
- Average rainfall days in January:
8.7 days - Average rainfall days in February:
9.4 days - Average rainfall days in March:
13.3 days - Average rainfall days in April:
17.6 days - Average rainfall days in May:
18.1 days - Average rainfall days in June:
16.7 days
- Average rainfall days in July:
17.2 days - Average rainfall days in August:
15.5 days - Average rainfall days in September:
11.8 days - Average rainfall days in October:
13.7 days - Average rainfall days in November:
11 days - Average rainfall days in December:
11.9 days
The month with the highest number of rainy days is May (18.1 days).
The month with the least rainy days is January (8.7 days).
Average snowfall
Sussex, NJ
- Average snowfall in January:
4.45" - Average snowfall in February:
5.43" - Average snowfall in March:
4.09" - Average snowfall in April:
0.39" - Average snowfall in May:
0.28" - Average snowfall in June:
0"
The month with the highest snowfall is February (5.43").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Sussex, NJ
- Average snowfall days in January:
9.8 days - Average snowfall days in February:
9.8 days - Average snowfall days in March:
7 days - Average snowfall days in April:
1.3 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:
2.1 days - Average snowfall days in December:
6.4 days
The months with the highest number of snowfall days are January and February (9.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Sussex, 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 42min - Average sunshine in February:
4h and 12min - Average sunshine in March:
6h and 0min - Average sunshine in April:
7h and 48min - Average sunshine in May:
8h and 12min - Average sunshine in June:
9h and 18min
- Average sunshine in July:
10h and 6min - Average sunshine in August:
9h and 54min - Average sunshine in September:
8h and 36min - Average sunshine in October:
5h and 24min - Average sunshine in November:
5h and 24min - Average sunshine in December:
4h and 36min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 12min).
Average sunshine days
Sussex, NJ
- Average sunshine days in January:
16.8 days - Average sunshine days in February:
12.4 days - Average sunshine days in March:
13.4 days - Average sunshine days in April:
10.4 days - Average sunshine days in May:
11.3 days - Average sunshine days in June:
10.9 days
- Average sunshine days in July:
11.9 days - Average sunshine days in August:
12.9 days - Average sunshine days in September:
15.8 days - Average sunshine days in October:
15.5 days - Average sunshine days in November:
17.1 days - Average sunshine days in December:
15.7 days
The month with the most sunshine days is November (17.1 days).
The month with the least sunshine days is April (10.4 days).
Average UV index
Sussex, NJ
The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).
Average cloud cover
Sussex, NJ
The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 36).
Average visibility
Sussex, NJ
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
