Climate and monthly weather forecastUnion City, NJ
Climate and monthly weather forecast
The climate of Union City
Union City experiences a Humid subtropical climate (Cfa), as per the Köppen climate classification. Located in the state of New Jersey, USA, the city is characterized by high temperatures and above-average rainfall throughout the year.The average high temperatures in Union City span from 36.3°F (2.4°C) in January to a peak of 83.3°F (28.5°C) in July. Cool winters give way to warming spring, followed by hot summers, and back to mild autumn. The overnight lows follow this seasonal pattern as well, starting from 25.7°F (-3.5°C) in the coldest month of January and rising up to 69.3°F (20.7°C) in July.
Humidity levels are relatively stable year-round, ranging from a low of 70% in August to a high of 76% in February and December. Union City sees substantial rainfall annually with peak precipitation of 3.43" (87mm) in July and the lowest of 2.2" (56mm) in September. Snowfall is primarily limited to the months from January to March, with January being the snowiest month receiving 2.8" (71mm) of snow.
Regarding sunlight, there is variation from 9.3 hours per day in December to as much as 15.1 hours in June. However, bright sunshine is available for about one-third to half of daylight hours, varying from 4.9 hours in December to 10.5 hours per day in July. Wind speeds are also moderate, with speeds tending to be greatest between January and March, at around 9.5mph (15.3km/h) to 9.7mph (15.6km/h).
One of the most distinguishing aspects of Union City's weather is the consistent visibility, which remains at a steady 6 miles throughout the year. Also noteworthy is the slight variance in atmospheric pressure, which lies between 29.93 in Hg during June and 30.1 in Hg in November.
The best time to visit Union City
Considering a combination of pleasant temperatures and favourable climate conditions, the period from May through September could be the ideal time to visit Union City. During this time, temperatures hover between 57.6°F (14.2°C) to 82°F (27.8°C) during the day and between 53.6°F (12°C) to 69.3°F (20.7°C) during the night. Rainfall averages are also slightly lower, standing at around 2.95" (75mm), making these months less likely to be disrupted by heavy precipitation. Furthermore, sunshine is most abundant with up to 10.5 hours per day, offering ample opportunity for outdoor exploration.The worst time to visit Union City
The winter months, specifically from December to February, may present some challenges for visitors to Union City. During this period, the city experiences its lowest temperatures, with highs averaging between 36.3°F (2.4°C) to 39°F (3.9°C) and lows dropping down to 25.7°F (-3.5°C) to 27.5°F (-2.5°C). Moreover, this period sees the highest snowfall, peaking at 2.8" (71mm) in February, which could lead to travel disruptions. The days are also shorter with daylight hours ranging from 9.3 to 10.7 hours, and sunshine duration dropping to around 4.9 to 5.1 hours per day.Spring weather in Union City
Spring in Union City is observed from March to May, with temperatures gradually increasing from 46.4°F (8°C) to 68.4°F (20.2°C) during the day and from 34.2°F (1.2°C) to 53.6°F (12°C) during the night. In terms of rainfall, March sees an average of 2.87" (73mm) of rain, however, it gradually increases to 2.95" (75mm) by May. Despite this increase, rainfall is spread across the month with about 16.7 rain days in May. Daylight hours also increase during this season, reaching up to 14.5 hours in May, though bright sunshine averages at about 8.4 hours.Summer weather in Union City
Summer in Union City spans June to August and is characterized by high temperatures and increased rainfall. Daytime highs range from 76.6°F (24.8°C) in June to the peak of 83.3°F (28.5°C) in July, while nighttime lows hover from 62.4°F (16.9°C) to 69.3°F (20.7°C). July records the highest rainfall for the year at 3.43" (87mm). The summer season is the brightest in Union City, providing up to 15.1 hours of daylight in June, with as many as 10.5 hours of bright sunshine in July.Autumn weather in Union City
Autumn, from September to November, marks a gradual decrease in temperatures in Union City. Temperatures during the day range from 75°F (23.9°C) in September down to 51.3°F (10.7°C) in November, while the nights get cooler from 61.7°F (16.5°C) down to 39.9°F (4.4°C). Rainfall also varies, with September seeing the least rain for the year at 2.2" (56mm), but then subsequently increasing to 2.68" (68mm) by November. Daylight hours decrease during these months, dropping from 12.5 hours in September to 9.9 hours in November.Winter weather in Union City
Winter season in Union City runs from December to February, featuring the coolest temperatures of the year. Daytime highs are between 36.3°F (2.4°C) to 39°F (3.9°C), while the lows are between 25.7°F (-3.5°C) to 27.5°F (-2.5°C). December records the highest rainfall of the season at 3.78" (96mm), while snowfall is most substantial in February with 2.8" (71mm) of snow observed. Daylight is least in winter, dwindling down to 9.3 hours in December, though sunshine is available for about 5 hours even during these shorter days.Weather in January
Union City, New Jersey, ushers in the New Year on a chilly note. Comparatively colder than the upcoming February, the weather of January is marked by frosty winds, with temperatures dropping as low as 25.7°F (-3.5°C). The city experiences evident short days, deleterious for sun-lovers keen on outdoor activities, but ideal for those fond of the winter chill. Weather in January »Weather in February
As the calendar turns the page to February, slight changes grace Union City's weather narrative. February perpetuates the winter feel instigated by its predecessor, albeit with a subtle increment in the temperatures, hitting highs up to 39°F (3.9°C). Weather in February »Weather in March
March makes its presence felt in Union City as the season slowly moves towards spring, offering respite from the recurring bouts of snow experienced in February, and limit them to 3.86" (98mm). The city begins the process of shrugging off its winter cloak, paving the way for brighter, longer days. Weather in March »Weather in April
April sees the weather become decidedly spring-like, leaving the previous colder months' vestiges far behind. A marked leap in temperature spells highs reaching up to 57.6°F (14.2°C), contrasting sharply with those from cold March. Weather in April »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. Weather in May »Weather in June
June is when summer in Union City officially kicks off, characterized by considerable temperature rise and June seeing highs up to 76.6°F (24.8°C). This month features the longest daylight hours of the year, resulting in ample time for outdoor activities and exploration. Weather in June »Weather in July
July is the warmest month in Union City, New Jersey, with temperatures peaking at an annual high of 83.3°F (28.5°C). The weather is predominantly hot and humid, accentuated by the sun shining bright for nearly fifteen hours a day. Weather in July »Weather in August
Union City's August weather offers signs of a gradual retreat from the peak summer conditions noticed in July. There's a slight decline in temperatures, yet it swelters under days hotter than 82°F (27.8°C). The city experiences the tail end of the summer season as the sun continues to shine bright for long hours. Weather in August »Weather in September
September serves as a bridge between the summer and autumn seasons in Union City. Experiencing a cool-down from the sweltering days of August, September's weather becomes more comfortable. This month is marked by the perfect equilibrium of temperature and sunshine hours, making it ideal for enjoying outdoor events. Weather in September »Weather in October
The weather in Union City in October is quintessentially autumnal. Marked by pleasant fall temperatures, October witnesses a significant drop from the previous sultry September, with lows dipping to about 51.6°F (10.9°C). As the fall foliage takes over the cityscape, the reduced daylight hours render the evenings cooler and the days shorter. Weather in October »Weather in November
November in Union City signifies a significant transformation as the city braves through its first snowfall, a slight 0.28" (7mm). The temperature continues its downward trend, allowing the chill of winter to seep in. A noticeable drop in the daylight hours is apparent, further reinforcing the onset of winter. Weather in November »Weather in December
December in Union City confirms the arrival of winter as temperatures plummet to as low as 32.9°F (0.5°C). The short daylight hours and a decrease in sunshine, compared to long November's lights, dominate this month. With the city under the grip of a pronounced chill, and the days becoming increasingly short, outdoor activities take a backseat. Weather in December »Updated: Aug 25, 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, having an average high-temperature of 36.3°F (2.4°C) and an average low-temperature of 25.7°F (-3.5°C), is the coldest month.
In Union City, during the entire year, the rain falls for 160.7 days and collects up to 34.72" (882mm) of precipitation.
Months with snowfall are January through April, November and December.
In Union City, during the entire year, snow falls for 22.7 days and aggregates up to 10.79" (274mm) of snow.
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Union City.
February and December, with an average relative humidity of 76%, are most humid months.
With an average of 4.8h of sunshine, February has the least sunshine of the year.
The month with the most snowfall is March, when snow falls for 4.8 days and typically aggregates up to 3.86" (98mm) 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 Union City, snow does not fall in May through October.
June has the longest days of the year, with an average of 15h and 6min of daylight.
The months with the highest UV index are June through August, with an average maximum UV index of 6.
Union City registers the average highest temperatures during July, with peaks of 83.3°F (28.5°C) and lows of 69.3°F (20.7°C).
With an average of 10.5h of sunshine, July has the most sunshine of the year.
With an average relative humidity of 70%, August is the least humid month.
September is the month with the least rainfall. Rain falls for 12.5 days and accumulates 2.2" (56mm) of precipitation.
The month with the most rainfall is December, when the rain falls for 12.5 days and typically aggregates up to 3.78" (96mm) of precipitation.
The month with the shortest days is December, with an average of 9h and 18min of daylight.
Average temperature
Union City, NJ
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).
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
Union City, NJ
- Average pressure in January:
30.06"Hg - Average pressure in February:
30.03"Hg - Average pressure in March:
30.05"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:
30.05"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
Union City, NJ
- Average wind speed in January:
9.7mph - Average wind speed in February:
9.5mph - Average wind speed in March:
9.5mph - Average wind speed in April:
8.9mph - Average wind speed in May:
7.5mph - Average wind speed in June:
7mph
- Average wind speed in July:
6.5mph - Average wind speed in August:
6.5mph - Average wind speed in September:
7.1mph - Average wind speed in October:
8.3mph - Average wind speed in November:
8.9mph - Average wind speed in December:
9.2mph
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
Union City, NJ
The months with the highest relative humidity are February and December (76%).
The month with the lowest relative humidity is August (70%).
Average rainfall
Union City, NJ
- Average rainfall in January:
2.36" - Average rainfall in February:
2.32" - Average rainfall in March:
2.87" - Average rainfall in April:
2.91" - Average rainfall in May:
2.95" - Average rainfall in June:
2.95"
- Average rainfall in July:
3.43" - Average rainfall in August:
3.23" - Average rainfall in September:
2.2" - Average rainfall in October:
3.03" - Average rainfall in November:
2.68" - Average rainfall in December:
3.78"
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
Union City, NJ
- Average rainfall days in January:
9 days - Average rainfall days in February:
10.2 days - Average rainfall days in March:
12.8 days - Average rainfall days in April:
15.7 days - Average rainfall days in May:
16.7 days - Average rainfall days in June:
16.3 days
- Average rainfall days in July:
16.8 days - Average rainfall days in August:
15.2 days - Average rainfall days in September:
12.5 days - Average rainfall days in October:
13.3 days - Average rainfall days in November:
9.7 days - Average rainfall days in December:
12.5 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
Union City, NJ
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
Union City, NJ
- Average snowfall days in January:
6.6 days - Average snowfall days in February:
6.7 days - Average snowfall days in March:
4.8 days - Average snowfall days in April:
0.4 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:
0.7 days - Average snowfall days in December:
3.5 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 / Average sunshine
Union City, 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 42min - 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 6min - Average sunshine in February:
4h and 48min - Average sunshine in March:
6h and 18min - Average sunshine in April:
8h and 24min - Average sunshine in May:
8h and 48min - Average sunshine in June:
9h and 48min
- Average sunshine in July:
10h and 30min - Average sunshine in August:
10h and 18min - Average sunshine in September:
8h and 54min - Average sunshine in October:
5h and 42min - Average sunshine in November:
5h and 36min - Average sunshine in December:
4h and 54min
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
Union City, NJ
- Average sunshine days in January:
17.3 days - Average sunshine days in February:
13.7 days - Average sunshine days in March:
14.3 days - Average sunshine days in April:
12.8 days - Average sunshine days in May:
13.2 days - Average sunshine days in June:
11.7 days
- Average sunshine days in July:
12 days - Average sunshine days in August:
13.4 days - Average sunshine days in September:
15 days - Average sunshine days in October:
15.7 days - Average sunshine days in November:
17.9 days - Average sunshine days in December:
15.9 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
Union City, 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
Union City, NJ
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
Union City, 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).
