May weather forecastOld Tappan, NJ
May
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).Temperature
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). During the nights in May, Old Tappan observes an average low-temperature of 52.7°F (11.5°C).Humidity
In May, the average relative humidity is 73%.Rainfall
In Old Tappan, in May, during 16.8 rainfall days, 2.68" (68mm) of precipitation is typically accumulated. Throughout the year, there are 153.9 rainfall days, and 30.75" (781mm) of precipitation is accumulated.Snowfall
May through October are months without snowfall in Old Tappan, New Jersey.Daylight
In Old Tappan, the average length of the day in May is 14h and 29min.On the first day of the month, sunrise is at 5:52 am and sunset at 7:53 pm. On the last day of May, sunrise is at 5:26 am and sunset at 8:21 pm EDT.
Sunshine
In Old Tappan, the average sunshine in May is 8.4h.UV index
The average daily maximum UV index in May in Old Tappan is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for average individuals.Note: A typical high UV index of 5 in May suggests the following recommendations:
Put precautions into practice - Guidance to elude sunburn is provided. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Old Tappan, NJ
- Average high temperature in May: 69.6°F
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).
- Average low temperature in May: 52.7°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 in May
Old Tappan, NJ
- Average pressure in May: 30.01"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 in May
Old Tappan, NJ
- Average wind speed in May: 6.7mph
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 in May
Old Tappan, NJ
- Average humidity in May: 73%
The month with the highest relative humidity is February (77%).
The month with the lowest relative humidity is August (68%).
Average rainfall in May
Old Tappan, NJ
- Average rainfall in May: 2.68"
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 in May
Old Tappan, NJ
- Average rainfall days in May: 16.8 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 in May
Old Tappan, NJ
- Average snowfall in May: 0"
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 in May
Old Tappan, NJ
- Average snowfall days in May: 0 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 in May /
Average sunshine in May
Old Tappan, NJ
- Average daylight in May: 14h and 30min
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 May: 8h and 24min
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 in May
Old Tappan, NJ
- Average sunshine days in May: 12.9 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 in May
Old Tappan, NJ
- Average UV index in May: 5
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 in May
Old Tappan, NJ
- Average cloud cover in May: 47
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 in May
Old Tappan, NJ
- Average visibility in May: 6mi
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).
