May weather forecast
Watertown, NY

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Weather in May

May signifies the arrival of spring in Watertown. As the temperatures continue to climb, the final remnants of winter snowfall reduce to a measly 0.08" (2mm). The atmosphere becomes vibrant and refreshing, with longer sunshine hours and clear skies. Amid the blooming flowers and budding trees, mild winds blow, sustaining the comfortable spring weather. Despite the occasional rain showers, the transformation to a lush, green landscape is unimpeded in this sunny month.

Temperature

The shift into May is accompanied by a temperature increase, with the average high-temperature rising from a cool 50.5°F (10.3°C) in April to a refreshing 63.5°F (17.5°C). Watertown records an average temperature drop to a chilly 46.4°F (8°C) in May.

Humidity

In Watertown, the average relative humidity in May is 79%.

Rainfall

In Watertown, in May, it is raining for 16.6 days, with typically 3.07" (78mm) of accumulated precipitation. Throughout the year, in Watertown, there are 163.9 rainfall days, and 33.19" (843mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Watertown are January through May, October through December. May is the last month it regularly snows. During 0.8 snowfall days, in May, Watertown aggregates 0.08" (2mm) of snow. Throughout the year, in Watertown, there are 84.4 snowfall days, and 43.58" (1107mm) of snow is accumulated.

Daylight

The average length of the day in May is 14h and 46min.
On the first day of May in Watertown, sunrise is at 5:54 am and sunset at 8:07 pm. On the last day of the month, sunrise is at 5:23 am and sunset at 8:39 pm EDT.

Sunshine

In Watertown, the average sunshine in May is 8.7h.

UV index

In May, the average daily maximum UV index in Watertown is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: During May, 4 as the daily maximum UV index converts into the following advice:
Undertake precautions - Obligation exists to protect against skin and eye damage. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in Watertown in May?

The average high-temperature, in May, in Watertown, is 63.5°F (17.5°C), while the average low-temperature is 46.4°F (8°C).

What is the average humidity in May in Watertown?

In Watertown, New York, the average relative humidity in May is 79%.

How much does it rain in Watertown in May?

In May, the rain falls for 16.6 days. Throughout May, 3.07" (78mm) of precipitation is accumulated.

What is the last month it snows in Watertown?

May is the last month it regularly snows in Watertown, New York. During 0.8 snowfall days, in May, Watertown aggregates 0.08" (2mm) of snow.

What is the average length of the day in May in Watertown?

The average day length in May is 14h and 46min.

When are sunrise and sunset in May in Watertown?

On the first day of May in Watertown, sunrise is at 5:54 am and sunset at 8:07 pm. On the last day of the month, sunrise is at 5:23 am and sunset at 8:39 pm EDT.

How many hours of sunshine does Watertown have in May?

In May, the average sunshine duration in Watertown is 8.7h.

What is the UV index reading in May in Watertown?

The average daily maximum UV index in May in Watertown is 4. A UV Index value of 3 to 5 symbolizes a medium hazard to health from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Watertown, NY

Average temperature in May - Watertown, NY
  • Average high temperature in May: 63.5°F

The warmest month (with the highest average high temperature) is July (76.6°F).
The month with the lowest average high temperature is January (26.1°F).

  • Average low temperature in May: 46.4°F

The month with the highest average low temperature is July (60.3°F).
The coldest month (with the lowest average low temperature) is January (14.4°F).

Average pressure in May
Watertown, NY

Average pressure in May - Watertown, NY
  • Average pressure in May: 29.98"Hg

The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in May
Watertown, NY

Average wind speed in May - Watertown, NY
  • Average wind speed in May: 7.9mph

The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest month (with the lowest average wind speed) is July (6.9mph).

Average humidity in May
Watertown, NY

Average humidity in May - Watertown, NY
  • Average humidity in May: 79%

The month with the highest relative humidity is January (88%).
The months with the lowest relative humidity are April and September (77%).

Average rainfall in May
Watertown, NY

Average rainfall in May - Watertown, NY
  • Average rainfall in May: 3.07"

The wettest month (with the highest rainfall) is October (3.54").
The driest month (with the least rainfall) is September (1.81").

Average rainfall days in May
Watertown, NY

Average rainfall days in May - Watertown, NY
  • Average rainfall days in May: 16.6 days

The month with the highest number of rainy days is October (17.7 days).
The month with the least rainy days is February (7 days).

Average snowfall in May
Watertown, NY

Average snowfall in May - Watertown, NY
  • Average snowfall in May: 0.08"

The month with the highest snowfall is January (10.47").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in May
Watertown, NY

Average snowfall days in May - Watertown, NY
  • Average snowfall days in May: 0.8 days

The month with the highest number of snowfall days is January (19.6 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in May /
Average sunshine in May
Watertown, NY

Average daylight in May / Average sunshine in May - Watertown, NY
  • Average daylight in May: 14h and 5min

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in May: 8h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 12min).
The months with the least sunshine are January and February (Average sunshine: 2h and 42min).

Average sunshine days in May
Watertown, NY

Average sunshine days in May - Watertown, NY
  • Average sunshine days in May: 11.7 days

The month with the most sunshine days is September (15.1 days).
The month with the least sunshine days is February (6.7 days).

Average UV index in May
Watertown, NY

Average UV index in May - Watertown, NY
  • Average UV index in May: 4

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).

Average cloud cover in May
Watertown, NY

Average cloud cover in May - Watertown, NY
  • Average cloud cover in May: 43

The month with the most cloud cover is January (Cloud cover 74).
The month with the least cloud cover is August (Cloud cover 31).

Average visibility in May
Watertown, NY

Average visibility in May - Watertown, NY
  • Average visibility in May: 6mi

The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).

Watertown, New York, USA

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