May weather forecastUnion City, NJ
May
Weather in May
The weather in Union City in May firmly underscores the departure of spring and the onset of summer. The transition period sees a pleasant evolution, marked by moderate humidity and increased temperatures. May sets the stage for a colorful culmination of spring, with vibrant flowers in full bloom dotting the cityscape. As the month advances, the remnants of the sporadic April showers disappear completely. The month's end sees the sun reigning high in the Union City sky, underscoring the arrival of summer.Temperature
The arrival of May signals an increase in the average high-temperature, moving from a moderate 57.6°F (14.2°C) in April to a pleasant 68.4°F (20.2°C). Nighttime temperatures consistently average a cool 53.6°F (12°C) during May.Humidity
In Union City, the average relative humidity in May is 74%.Rainfall
In Union City, New Jersey, in May, during 16.7 rainfall days, 2.95" (75mm) of precipitation is typically accumulated. In Union City, during the entire year, the rain falls for 160.7 days and collects up to 34.72" (882mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
In May, the average length of the day is 14h and 28min.On the first day of the month, sunrise is at 5:53 am and sunset at 7:52 pm. On the last day of May, sunrise is at 5:26 am and sunset at 8:20 pm EDT.
Sunshine
In Union City, the average sunshine in May is 8.8h.UV index
In May, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: In May, the maximum UV index of 5 suggests this advice:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Union City, NJ
- Average high temperature in May: 68.4°F
The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (36.3°F).
- Average low temperature in May: 53.6°F
The month with the highest average low temperature is July (69.3°F).
The coldest month (with the lowest average low temperature) is January (25.7°F).
Average pressure in May
Union City, 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
Union City, NJ
- Average wind speed in May: 7.5mph
The windiest month (with the highest average wind speed) is January (9.7mph).
The calmest months (with the lowest average wind speed) are July and August (6.5mph).
Average humidity in May
Union City, NJ
- Average humidity in May: 74%
The months with the highest relative humidity are February and December (76%).
The month with the lowest relative humidity is August (70%).
Average rainfall in May
Union City, NJ
- Average rainfall in May: 2.95"
The wettest month (with the highest rainfall) is December (3.78").
The driest month (with the least rainfall) is September (2.2").
Average rainfall days in May
Union City, NJ
- Average rainfall days in May: 16.7 days
The month with the highest number of rainy days is July (16.8 days).
The month with the least rainy days is January (9 days).
Average snowfall in May
Union City, NJ
- Average snowfall in May: 0"
The month with the highest snowfall is March (3.86").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in May
Union City, NJ
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (6.7 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
Union City, 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 48min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in May
Union City, NJ
- Average sunshine days in May: 13.2 days
The month with the most sunshine days is November (17.9 days).
The month with the least sunshine days is June (11.7 days).
Average UV index in May
Union City, 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
Union City, NJ
- Average cloud cover in May: 44
The month with the most cloud cover is March (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in May
Union City, 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).
