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Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Weather in January
January, the same as December, in Union, Connecticut, is another subzero cold winter month, with an average temperature varying between 31.3°F (-0.4°C) and 19°F (-7.2°C). Union records the coldest temperatures in January, averaging a high of 31.3°F (-0.4°C) and a low of 19°F (-7.2°C). Weather in January »
Weather in February
The last month of the winter, February, is a cold month in Union, Connecticut, with an average temperature varying between 20.1°F (-6.6°C) and 34.5°F (1.4°C). February begins with an average high-temperature of a wintry 34.5°F (1.4°C), reflecting close similarity to the preceding month. Weather in February »
Weather in March
The first month of the spring, March, is still a cold month in Union, Connecticut, with temperature in the range of an average high of 42.4°F (5.8°C) and an average low of 27.7°F (-2.4°C). March brings a slight elevation in the average high-temperature, transitioning from February's icy 34.5°F (1.4°C) to a still wintry 42.4°F (5.8°C). Weather in March »
Weather in April
April in Union, Connecticut, is a mild spring month, with an average temperature fluctuating between 37.9°F (3.3°C) and 55.4°F (13°C). With the onset of April, Union's average high-temperature sees a rise, moving from March's cold 42.4°F (5.8°C) to a mild 55.4°F (13°C). Weather in April »
Weather in May
May, the last month of the spring in Union, is an enjoyable month, with temperature in the range of an average high of 67.3°F (19.6°C) and an average low of 47.7°F (8.7°C). Entering May, Union sees a temperature rise, with the average high-temperature advancing from April's moderate 55.4°F (13°C) to a still refreshing 67.3°F (19.6°C). Weather in May »
Weather in June
June, the first month of the summer in Union, is a warm month, with an average temperature varying between 54.9°F (12.7°C) and 74.5°F (23.6°C). A slight uplift in the average high-temperature marks June, adjusting from May's enjoyable 67.3°F (19.6°C) to a warm 74.5°F (23.6°C). Weather in June »
Weather in July
July, like June, in Union, Connecticut, is another warm summer month, with an average temperature ranging between min 61.3°F (16.3°C) and max 81.3°F (27.4°C). The temperatures reach their highest averages in July, with highs of 81.3°F (27.4°C) and lows of 61.3°F (16.3°C). During July, the heat index is appraised at a tropical 86°F (30°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Union, Connecticut, with an average temperature ranging between max 79°F (26.1°C) and min 60.3°F (15.7°C). August's advent presents an average high-temperature of a still warm 79°F (26.1°C), indicating a slight variation from the conditions of the previous month. Weather in August »
Weather in September
September, the first month of the autumn in Union, is also an agreeable month, with an average temperature fluctuating between 72°F (22.2°C) and 53.6°F (12°C). The transition into September subtly indicates a reduction in the average high-temperature, down to an agreeable 72°F (22.2°C) from August's moderately hot 79°F (26.1°C). Weather in September »
Weather in October
October, like September, is a moderate autumn month in Union, Connecticut, with an average temperature fluctuating between 44.8°F (7.1°C) and 59.4°F (15.2°C). October brings a decrease in the average high-temperature, falling from September's pleasant 72°F (22.2°C) to a mild 59.4°F (15.2°C). Weather in October »
Weather in November
November, the last month of the autumn in Union, is also a frosty month, with an average temperature varying between 47.3°F (8.5°C) and 34.2°F (1.2°C). In November, the average high-temperature goes from a moderate 59.4°F (15.2°C) in October to a chilly 47.3°F (8.5°C). Weather in November »
Weather in December
December, the first month of the winter in Union, is still a cold month, with an average temperature ranging between min 26.1°F (-3.3°C) and max 37°F (2.8°C). Union's progression into December includes a drop in the average high-temperature, from a frosty 47.3°F (8.5°C) in November to an icy 37°F (2.8°C). Weather in December »
Updated: Feb 10, 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
What part of the year is the coldest in Union?
January is the coldest month in Union, Connecticut, with an average high-temperature of 31.3°F (-0.4°C) and an average low-temperature of 19°F (-7.2°C).
How many days does it rain in Union?
Throughout the year, in Union, there are 148.3 rainfall days, and 29.21" (742mm) of precipitation is accumulated.
When does it snow in Union?
Months with snowfall are January through May, October through December.
How much does it snow in Union?
In Union, Connecticut, during the entire year, snow falls for 35.3 days and aggregates up to 19.53" (496mm) of snow.
When is the lowest UV index in Union?
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2.
What is the most humid month in Union?
The most humid month is February, with an average relative humidity of 81%.
When does it snow the most in Union?
February is the month with the most snowfall in Union. Snow falls for 8.1 days and accumulates 4.88" (124mm) of snow.
What is the month with the least sunshine in Union?
The month with the least sunshine in Union is February, with an average of 4.4h of sunshine.
When is Daylight Saving Time (DST) in Union?
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.
What is the least humid month in Union?
With an average relative humidity of 73%, April is the least humid month in Union.
When it does not snow in Union?
In Union, snow does not fall in June through September.
When are the longest days in Union?
The month with the longest days in Union, Connecticut, is June, with an average of 15h and 12min of daylight.
What are the months with the highest UV index in Union?
The months with the highest UV index in Union, Connecticut, are June and July, with an average maximum UV index of 6.
What part of the year is the hottest in Union?
July, characterized by an average high temperature of 81.3°F (27.4°C) and a low temperature of 61.3°F (16.3°C), is generally the warmest month in Union.
What is the wettest month in Union?
July is the month with the most rainfall in Union, Connecticut. Rain falls for 16.3 days and accumulates 2.76" (70mm) of precipitation.
What month has the most sunshine in Union?
The month with the most sunshine in Union, Connecticut, is August, with an average of 10h of sunshine.
What is the driest month in Union?
September is the month with the least rainfall. Rain falls for 12.6 days and accumulates 1.65" (42mm) of precipitation.
What is the month with the shortest days in Union?
The month with the shortest days is December, with an average of 9h and 12min of daylight.
Average temperature
Union, CT
The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (31.3°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°F).
Average pressure
Union, CT
- Average pressure in January:
30.02"Hg - Average pressure in February:
30"Hg - Average pressure in March:
30.04"Hg - Average pressure in April:
29.97"Hg - Average pressure in May:
30.01"Hg - Average pressure in June:
29.93"Hg
- Average pressure in July:
29.95"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.06"Hg - Average pressure in October:
30.01"Hg - Average pressure in November:
30.08"Hg - Average pressure in December:
30.04"Hg
The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed
Union, CT
- Average wind speed in January:
8.8mph - Average wind speed in February:
8.8mph - Average wind speed in March:
8.7mph - Average wind speed in April:
8.2mph - Average wind speed in May:
6.9mph - Average wind speed in June:
6.2mph
- Average wind speed in July:
5.6mph - Average wind speed in August:
5.5mph - Average wind speed in September:
6mph - Average wind speed in October:
7.4mph - Average wind speed in November:
7.9mph - Average wind speed in December:
8.5mph
The windiest months (with the highest average wind speed) are January and February (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity
Union, CT
The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is April (73%).
Average rainfall
Union, CT
- Average rainfall in January:
2.13" - Average rainfall in February:
1.93" - Average rainfall in March:
2.52" - Average rainfall in April:
2.64" - Average rainfall in May:
2.52" - Average rainfall in June:
2.56"
- Average rainfall in July:
2.76" - Average rainfall in August:
2.56" - Average rainfall in September:
1.65" - Average rainfall in October:
2.68" - Average rainfall in November:
2.64" - Average rainfall in December:
2.64"
The wettest month (with the highest rainfall) is July (2.76").
The driest month (with the least rainfall) is September (1.65").
Average rainfall days
Union, CT
- Average rainfall days in January:
7.1 days - Average rainfall days in February:
7.2 days - Average rainfall days in March:
10.9 days - Average rainfall days in April:
14.7 days - Average rainfall days in May:
15.9 days - Average rainfall days in June:
15.8 days
- Average rainfall days in July:
16.3 days - Average rainfall days in August:
15.2 days - Average rainfall days in September:
12.6 days - Average rainfall days in October:
13.7 days - Average rainfall days in November:
9.5 days - Average rainfall days in December:
9.4 days
The month with the highest number of rainy days is July (16.3 days).
The month with the least rainy days is January (7.1 days).
Average snowfall
Union, CT
- Average snowfall in January:
3.19" - Average snowfall in February:
4.88" - Average snowfall in March:
4.69" - Average snowfall in April:
1.14" - Average snowfall in May:
0.28" - Average snowfall in June:
0"
The month with the highest snowfall is February (4.88").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Union, CT
- Average snowfall days in January:
8.5 days - Average snowfall days in February:
8.1 days - Average snowfall days in March:
8.2 days - Average snowfall days in April:
1.7 days - Average snowfall days in May:
0.1 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:
0.5 days - Average snowfall days in November:
2.5 days - Average snowfall days in December:
5.7 days
The month with the highest number of snowfall days is January (8.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Union, CT
- Average daylight in January:
9h and 3min - Average daylight in February:
10h and 4min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 2min - Average daylight in May:
14h and 4min - Average daylight in June:
15h and 1min
- Average daylight in July:
14h and 5min - Average daylight in August:
13h and 5min - Average daylight in September:
12h and 3min - Average daylight in October:
11h and 1min - Average daylight in November:
9h and 5min - Average daylight in December:
9h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in January:
4h and 5min - Average sunshine in February:
4h and 2min - Average sunshine in March:
5h and 4min - Average sunshine in April:
7h and 5min - Average sunshine in May:
8h and 0min - Average sunshine in June:
8h and 5min
- Average sunshine in July:
9h and 5min - Average sunshine in August:
10h and 0min - Average sunshine in September:
8h and 0min - Average sunshine in October:
5h and 4min - Average sunshine in November:
5h and 2min - Average sunshine in December:
4h and 3min
The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).
Average sunshine days
Union, CT
- Average sunshine days in January:
16.9 days - Average sunshine days in February:
15.3 days - Average sunshine days in March:
14 days - Average sunshine days in April:
14 days - Average sunshine days in May:
13.9 days - Average sunshine days in June:
13.1 days
- Average sunshine days in July:
13.2 days - Average sunshine days in August:
14.1 days - Average sunshine days in September:
15.6 days - Average sunshine days in October:
14.8 days - Average sunshine days in November:
18.2 days - Average sunshine days in December:
17.1 days
The month with the most sunshine days is November (18.2 days).
The month with the least sunshine days is June (13.1 days).
Average UV index
Union, CT
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover
Union, CT
The month with the most cloud cover is March (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 37).
Average visibility
Union, CT
The months with the highest visibility are March, April, November and December (6mi).
The months with the lowest visibility are January, February, May, June, July, August, September and October (5mi).
Union, Connecticut, USA
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