Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
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). During the month of May, Union experiences a steady low-temperature average of 47.7°F (8.7°C).Humidity
In May, the average relative humidity in Union, Connecticut, is 76%.Rainfall
In Union, during May, the rain falls for 15.9 days and regularly aggregates up to 2.52" (64mm) of precipitation. Throughout the year, there are 148.3 rainfall days, and 29.21" (742mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall in Union, Connecticut. May is the last month it regularly snows. During 0.1 snowfall days, in May, Union aggregates 0.28" (7mm) of snow. In Union, during the entire year, snow falls for 35.3 days and aggregates up to 19.53" (496mm) of snow.Daylight
The average length of the day in May in Union is 14h and 35min.On the first day of May in Union, sunrise is at 5:43 am and sunset at 7:47 pm. On the last day of the month, sunrise is at 5:15 am and sunset at 8:17 pm EDT.
Sunshine
In Union, the average sunshine in May is 8h.UV index
In May, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the average person.Note: An average maximum UV index of 5 in May leads to these recommendations:
Undertake protective steps - Recommendations to avoid sunburn are issued. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in May in Union?
What is the average humidity in May in Union?
How much does it rain in Union in May?
What is the last month it snows in Union?
How many hours of daylight does Union have in May?
When are sunrise and sunset in May in Union?
How long on average sun shines in May in Union?
What is the UV index reading in May in Union?
Average temperature in May
Union, CT
- Average high temperature in May: 67.3°F
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).
- Average low temperature in May: 47.7°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 in May
Union, CT
- Average pressure in May: 30.01"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 in May
Union, CT
- Average wind speed in May: 6.9mph
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 in May
Union, CT
- Average humidity in May: 76%
The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is April (73%).
Average rainfall in May
Union, CT
- Average rainfall in May: 2.52"
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 in May
Union, CT
- Average rainfall days in May: 15.9 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 in May
Union, CT
- Average snowfall in May: 0.28"
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 in May
Union, CT
- Average snowfall days in May: 0.1 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 in May /
Average sunshine in May
Union, CT
- Average daylight in May: 14h and 4min
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 May: 8h and 0min
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 in May
Union, CT
- Average sunshine days in May: 13.9 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 in May
Union, CT
- Average UV index in May: 5
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 in May
Union, CT
- Average cloud cover in May: 50
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 in May
Union, CT
- Average visibility in May: 5mi
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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