May weather forecast
Washington, CT

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Weather in May

May, the last month of the spring in Washington, is an agreeable month, with temperature in the range of an average low of 47.8°F (8.8°C) and an average high of 68°F (20°C).

Temperature

A rise in the average high-temperature is observed during May, moving from a refreshing 55.8°F (13.2°C) in April to an agreeable 68°F (20°C). Washington throughout May, experiences an average nighttime temperature of 47.8°F (8.8°C).

Humidity

In Washington, Connecticut, the average relative humidity in May is 77%.

Rainfall

In Washington, in May, it is raining for 17.8 days, with typically 3.03" (77mm) of accumulated precipitation. In Washington, Connecticut, during the entire year, the rain falls for 161.7 days and collects up to 34.41" (874mm) of precipitation.

Snowfall

Months with snowfall in Washington, Connecticut, are January through May, October through December. May is the last month it regularly snows in Washington. During 0.2 snowfall days, in May, Washington aggregates 0.28" (7mm) of snow. In Washington, during the entire year, snow falls for 38.3 days and aggregates up to 19.84" (504mm) of snow.

Daylight

In Washington, the average length of the day in May is 14h and 33min.
On the first day of May in Washington, Connecticut, sunrise is at 5:48 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 5:21 am and sunset at 8:20 pm EDT.

Sunshine

In May, the average sunshine in Washington is 8.1h.

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 ordinary individuals.
Note: The daily high UV index of 5 in May translates into this advice:
Adopt protective measures - It is advised to guard against sun damage. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
Updated: Feb 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in Washington in May?

The average high-temperature and low-temperature during May are 68°F (20°C) and 47.8°F (8.8°C) respectively.

What is the average humidity in May in Washington?

In Washington, Connecticut, the average relative humidity in May is 77%.

How much does it rain in Washington in May?

In Washington, Connecticut, in May, it is raining for 17.8 days, with typically 3.03" (77mm) of accumulated precipitation.

What is the last month it snows in Washington?

May is the last month it regularly snows in Washington, Connecticut. During 0.2 snowfall days, in May, Washington aggregates 0.28" (7mm) of snow.

How many hours of daylight does Washington have in May?

The average day length in May is 14h and 33min.

When is the sunrise / sunset in May in Washington?

On the first day of May in Washington, Connecticut, sunrise is at 5:48 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 5:21 am and sunset at 8:20 pm EDT.

How many hours of sunshine does Washington have in May?

In Washington, Connecticut, the average sunshine duration in May is 8.1h.

How high is the UV index in May in Washington?

In Washington, the average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a medium health risk from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Washington, CT

Average temperature in May - Washington, CT
  • Average high temperature in May: 68°F

The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (31.5°F).

  • Average low temperature in May: 47.8°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 (19.8°F).

Average pressure in May
Washington, CT

Average pressure in May - Washington, CT
  • Average pressure in May: 30.01"Hg

The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in May
Washington, CT

Average wind speed in May - Washington, CT
  • Average wind speed in May: 6.2mph

The windiest month (with the highest average wind speed) is March (7.9mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

Average humidity in May
Washington, CT

Average humidity in May - Washington, CT
  • Average humidity in May: 77%

The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is April (73%).

Average rainfall in May
Washington, CT

Average rainfall in May - Washington, CT
  • Average rainfall in May: 3.03"

The wettest month (with the highest rainfall) is July (3.7").
The driest month (with the least rainfall) is January (2.13").

Average rainfall days in May
Washington, CT

Average rainfall days in May - Washington, CT
  • Average rainfall days in May: 17.8 days

The month with the highest number of rainy days is July (18.3 days).
The month with the least rainy days is January (7.7 days).

Average snowfall in May
Washington, CT

Average snowfall in May - Washington, CT
  • Average snowfall in May: 0.28"

The month with the highest snowfall is February (5.16").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in May
Washington, CT

Average snowfall days in May - Washington, CT
  • Average snowfall days in May: 0.2 days

The month with the highest number of snowfall days is February (10.5 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in May /
Average sunshine in May
Washington, CT

Average daylight in May / Average sunshine in May - Washington, CT
  • Average daylight in May: 14h and 3min

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 12min).

  • Average sunshine in May: 8h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).

Average sunshine days in May
Washington, CT

Average sunshine days in May - Washington, CT
  • Average sunshine days in May: 11.3 days

The month with the most sunshine days is January (17.5 days).
The month with the least sunshine days is June (10.3 days).

Average UV index in May
Washington, CT

Average UV index in May - Washington, CT
  • Average UV index in May: 5

The month with the highest UV index is June (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
Washington, CT

Average cloud cover in May - Washington, CT
  • Average cloud cover in May: 49

The month with the most cloud cover is February (Cloud cover 52).
The months with the least cloud cover are July and August (Cloud cover 37).

Average visibility in May
Washington, CT

Average visibility in May - Washington, CT
  • Average visibility in May: 5mi

The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (5mi).

Washington, Connecticut, USA

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