Climate and monthly weather forecastOld Tappan, NJ
Climate and monthly weather forecast
Weather in January
January, like December, in Old Tappan, New Jersey, is a wintry winter month, with temperature in the range of an average low of 24.1°F (-4.4°C) and an average high of 35.4°F (1.9°C). January brings the lowest temperatures, with an average high of 35.4°F (1.9°C) and an average low of 24.1°F (-4.4°C). Weather in January »Weather in February
February, the last month of the winter in Old Tappan, is also a wintry month, with an average temperature fluctuating between 25.7°F (-3.5°C) and 38.8°F (3.8°C). Entering February, the average high-temperature is recorded at a still cold 38.8°F (3.8°C), exhibiting a minimal shift from January's 35.4°F (1.9°C). Weather in February »Weather in March
The first month of the spring, March, is a frosty month in Old Tappan, New Jersey, with an average temperature ranging between min 32.7°F (0.4°C) and max 46.6°F (8.1°C). With the onset of March, the average high-temperature subtly transitions from a wintry 38.8°F (3.8°C) in February to a frosty 46.6°F (8.1°C). Weather in March »Weather in April
April in Old Tappan, New Jersey, is a moderate spring month, with an average temperature fluctuating between 58.3°F (14.6°C) and 43.2°F (6.2°C). April signals a shift in the average high-temperature, moving from March's chilly 46.6°F (8.1°C) to a mild 58.3°F (14.6°C). Weather in April »Weather in May
The last month of the spring, May, is a pleasant month in Old Tappan, New Jersey, with an average temperature fluctuating between 52.7°F (11.5°C) and 69.6°F (20.9°C). Observing a rise in May, the average high-temperature goes from April's mild 58.3°F (14.6°C) to a pleasant 69.6°F (20.9°C). Weather in May »Weather in June
The first month of the summer, June, is a moderately hot month in Old Tappan, New Jersey, with an average temperature fluctuating between 78.4°F (25.8°C) and 60.6°F (15.9°C). June marks a minor ascent in the average high-temperature, adjusting from May's pleasant 69.6°F (20.9°C) to a moderately hot 78.4°F (25.8°C). Weather in June »Weather in July
July, like June, in Old Tappan, New Jersey, is another warm summer month, with an average temperature ranging between min 68°F (20°C) and max 84.9°F (29.4°C). July is the month when Old Tappan sees the highest average temperatures, with a high of 84.9°F (29.4°C) and a low of 68°F (20°C). The average heat index in July is estimated at a tropical 93.2°F (34°C). Weather in July »Weather in August
August, the last month of the summer in Old Tappan, is also a moderately hot month, with an average temperature ranging between max 82.9°F (28.3°C) and min 67.3°F (19.6°C). The onset of August notes an average high-temperature of a still moderately hot 82.9°F (28.3°C), subtly shifted from July's 84.9°F (29.4°C). Weather in August »Weather in September
September, the first month of the autumn in Old Tappan, is still a warm month, with an average temperature ranging between max 75.4°F (24.1°C) and min 59.9°F (15.5°C). September witnesses a gentle descent in average high-temperature, descending from August's moderately hot 82.9°F (28.3°C) to a still warm 75.4°F (24.1°C). Weather in September »Weather in October
October, like September, in Old Tappan, New Jersey, is another comfortable autumn month, with temperature in the range of an average high of 63.1°F (17.3°C) and an average low of 50.2°F (10.1°C). The onset of October entails a temperature shift, as the average high-temperature decreases from a moderately hot 75.4°F (24.1°C) in September to a comfortable 63.1°F (17.3°C). Weather in October »Weather in November
November, the last month of the autumn in Old Tappan, is another cool month, with an average temperature ranging between max 50.9°F (10.5°C) and min 38.5°F (3.6°C). The decrease of average high-temperatures is mild in November, with a decline from an enjoyable 63.1°F (17.3°C) in October to a fresh 50.9°F (10.5°C). Weather in November »Weather in December
December, the first month of the winter in Old Tappan, is also an icy month, with an average temperature fluctuating between 41.7°F (5.4°C) and 30.9°F (-0.6°C). The arrival of December corresponds with a reduction in the average high-temperature, down from November's fresh 50.9°F (10.5°C) to a cold 41.7°F (5.4°C). Weather in December »Updated: Aug 6, 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
Old Tappan's coldest month, January, registers temperatures that range from a high of 35.4°F (1.9°C) to a low of 24.1°F (-4.4°C).
Throughout the year, there are 153.9 rainfall days, and 30.75" (781mm) of precipitation is accumulated.
Months with snowfall are January through April, November and December.
Throughout the year, there are 25.5 snowfall days, and 10.55" (268mm) of snow is accumulated.
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2.
The most humid month is February, with an average relative humidity of 77%.
February has the least sunshine of the year, with an average of 4.6h of sunshine.
March is the month with the most snowfall. Snow falls for 5.4 days and accumulates 3.07" (78mm) of snow.
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.
In Old Tappan, snow does not fall in May through October.
With an average of 15h and 6min of daylight, June has the longest days of the year.
The months with the highest UV index are June through August, with an average maximum UV index of 6.
July, noted for its average high-temperature of 84.9°F (29.4°C) and an average low-temperature of 68°F (20°C), is considered the warmest month.
July has the most sunshine of the year, with an average of 10.3h of sunshine.
The least humid month is August, with an average relative humidity of 68%.
The month with the least rainfall is September, when the rain falls for 11.6 days and typically collects 1.73" (44mm) of precipitation.
December is the month with the most rainfall. Rain falls for 10.7 days and accumulates 3.46" (88mm) of precipitation.
The month with the shortest days is December, with an average of 9h and 18min of daylight.
Average temperature
Old Tappan, NJ
The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is January (35.4°F).
The month with the highest average low temperature is July (68°F).
The coldest month (with the lowest average low temperature) is January (24.1°F).
Average pressure
Old Tappan, NJ
- Average pressure in January:
30.06"Hg - Average pressure in February:
30.03"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:
29.98"Hg - Average pressure in September:
30.06"Hg - Average pressure in October:
30.02"Hg - Average pressure in November:
30.1"Hg - Average pressure in December:
30.07"Hg
The month with the highest atmospheric pressure is November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed
Old Tappan, NJ
- Average wind speed in January:
8.5mph - Average wind speed in February:
8.3mph - Average wind speed in March:
8.5mph - Average wind speed in April:
8.1mph - Average wind speed in May:
6.7mph - Average wind speed in June:
6.3mph
- Average wind speed in July:
5.8mph - Average wind speed in August:
5.8mph - Average wind speed in September:
6.3mph - Average wind speed in October:
7.3mph - Average wind speed in November:
7.6mph - Average wind speed in December:
8mph
The windiest months (with the highest average wind speed) are January and March (8.5mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).
Average humidity
Old Tappan, NJ
The month with the highest relative humidity is February (77%).
The month with the lowest relative humidity is August (68%).
Average rainfall
Old Tappan, NJ
- Average rainfall in January:
2.2" - Average rainfall in February:
2.05" - Average rainfall in March:
2.76" - Average rainfall in April:
2.76" - Average rainfall in May:
2.68" - Average rainfall in June:
2.68"
- Average rainfall in July:
2.68" - Average rainfall in August:
2.28" - Average rainfall in September:
1.73" - Average rainfall in October:
2.99" - Average rainfall in November:
2.48" - Average rainfall in December:
3.46"
The wettest month (with the highest rainfall) is December (3.46").
The driest month (with the least rainfall) is September (1.73").
Average rainfall days
Old Tappan, NJ
- Average rainfall days in January:
8.2 days - Average rainfall days in February:
9 days - Average rainfall days in March:
13.3 days - Average rainfall days in April:
15.8 days - Average rainfall days in May:
16.8 days - Average rainfall days in June:
15.5 days
- Average rainfall days in July:
16.1 days - Average rainfall days in August:
14.4 days - Average rainfall days in September:
11.6 days - Average rainfall days in October:
12.7 days - Average rainfall days in November:
9.8 days - Average rainfall days in December:
10.7 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (8.2 days).
Average snowfall
Old Tappan, NJ
The month with the highest snowfall is March (3.07").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Old Tappan, NJ
- Average snowfall days in January:
6.9 days - Average snowfall days in February:
6.8 days - Average snowfall days in March:
5.4 days - Average snowfall days in April:
0.7 days - Average snowfall days in May:
0 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 days - Average snowfall days in November:
1.1 days - Average snowfall days in December:
4.6 days
The month with the highest number of snowfall days is January (6.9 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Old Tappan, 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:
5h and 0min - Average sunshine in February:
4h and 36min - Average sunshine in March:
6h and 6min - Average sunshine in April:
8h and 6min - Average sunshine in May:
8h and 24min - Average sunshine in June:
9h and 30min
- Average sunshine in July:
10h and 18min - Average sunshine in August:
10h and 12min - Average sunshine in September:
8h and 36min - Average sunshine in October:
5h and 36min - Average sunshine in November:
5h and 30min - Average sunshine in December:
4h and 42min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days
Old Tappan, NJ
- Average sunshine days in January:
18.1 days - Average sunshine days in February:
14.1 days - Average sunshine days in March:
14.3 days - Average sunshine days in April:
12.7 days - Average sunshine days in May:
12.9 days - Average sunshine days in June:
12.7 days
- Average sunshine days in July:
13.1 days - Average sunshine days in August:
15 days - Average sunshine days in September:
16.7 days - Average sunshine days in October:
17 days - Average sunshine days in November:
18.1 days - Average sunshine days in December:
16.8 days
The months with the most sunshine days are January and November (18.1 days).
The months with the least sunshine days are April and June (12.7 days).
Average UV index
Old Tappan, 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).
Average cloud cover
Old Tappan, NJ
The months with the most cloud cover are February, March and December (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility
Old Tappan, NJ
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
