May weather forecast
South Dayton, NY

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Weather in May

May, the last month of the spring in South Dayton, is an enjoyable month, with an average temperature fluctuating between 46.9°F (8.3°C) and 63.5°F (17.5°C).

Temperature

An escalation in the average high-temperature is seen with the onset of May, moving from a fresh 51.3°F (10.7°C) in April to a refreshing 63.5°F (17.5°C). South Dayton's nights in May cool down to an average low-temperature of 46.9°F (8.3°C).

Humidity

In South Dayton, the average relative humidity in May is 81%.

Rainfall

May is the month with the most rainfall in South Dayton, New York. Rain falls for 20.3 days and accumulates 3.62" (92mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. May is the last month it regularly snows. During 1 snowfall days, in May, South Dayton aggregates 0.28" (7mm) of snow. Throughout the year, there are 59.1 snowfall days, and 27.6" (701mm) of snow is accumulated.

Daylight

In South Dayton, the average length of the day in May is 14h and 37min.
On the first day of the month, sunrise is at 6:10 am and sunset at 8:16 pm. On the last day of May, sunrise is at 5:41 am and sunset at 8:46 pm EDT.

Sunshine

In May, the average sunshine is 8.8h.

UV index

In May, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: The average daily UV index of 4 in May transforms into the following instructions:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
Updated: Aug 22, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average May temperature?

In South Dayton, 63.5°F (17.5°C) is the average high-temperature and 46.9°F (8.3°C) is the average low-temperature during May.

What is the average humidity in May in South Dayton?

In South Dayton, the average relative humidity in May is 81%.

What is the rainiest month?

The month with the most rainfall in South Dayton, New York, is May, when the rain falls for 20.3 days and typically aggregates up to 3.62" (92mm) of precipitation.

How many days does it rain in May?

In South Dayton, during May, the rain falls for 20.3 days and regularly aggregates up to 3.62" (92mm) of precipitation.

What is the last month it snows?

May is the last month it regularly snows. During 1 snowfall days, in May, South Dayton aggregates 0.28" (7mm) of snow.

What is the average length of the day in May?

In South Dayton, the average day length in May is 14h and 37min.

What time are sunrise and sunset in May in South Dayton?

On the first day of May, sunrise is at 6:10 am and sunset at 8:16 pm. On the last day of the month, sunrise is at 5:41 am and sunset at 8:46 pm EDT.

How long on average sun shines in May?

In May, the average sunshine duration is 8.8h.

What is the UV index reading in May?

In May, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium health risk from unprotected exposure to 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
South Dayton, NY

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

The warmest month (with the highest average high temperature) is July (75.9°F).
The month with the lowest average high temperature is January (28.2°F).

  • Average low temperature in May: 46.9°F

The month with the highest average low temperature is July (59.9°F).
The coldest month (with the lowest average low temperature) is January (18°F).

Average pressure in May
South Dayton, NY

Average pressure in May - South Dayton, NY
  • Average pressure in May: 29.99"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 in May
South Dayton, NY

Average wind speed in May - South Dayton, NY
  • Average wind speed in May: 8mph

The windiest month (with the highest average wind speed) is January (11.5mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).

Average humidity in May
South Dayton, NY

Average humidity in May - South Dayton, NY
  • Average humidity in May: 81%

The months with the highest relative humidity are January and February (88%).
The month with the lowest relative humidity is September (80%).

Average rainfall in May
South Dayton, NY

Average rainfall in May - South Dayton, NY
  • Average rainfall in May: 3.62"

The wettest month (with the highest rainfall) is May (3.62").
The driest month (with the least rainfall) is January (1.81").

Average rainfall days in May
South Dayton, NY

Average rainfall days in May - South Dayton, NY
  • Average rainfall days in May: 20.3 days

The month with the highest number of rainy days is May (20.3 days).
The month with the least rainy days is January (5.5 days).

Average snowfall in May
South Dayton, NY

Average snowfall in May - South Dayton, NY
  • Average snowfall in May: 0.28"

The month with the highest snowfall is November (5.79").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in May
South Dayton, NY

Average snowfall days in May - South Dayton, NY
  • Average snowfall days in May: 1 days

The month with the highest number of snowfall days is January (11.5 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in May /
Average sunshine in May
South Dayton, NY

Average daylight in May / Average sunshine in May - South Dayton, NY
  • 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 6min).

  • Average sunshine in May: 8h and 5min

The months with the most sunshine are July and August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 2h and 24min).

Average sunshine days in May
South Dayton, NY

Average sunshine days in May - South Dayton, NY
  • Average sunshine days in May: 8.4 days

The month with the most sunshine days is March (14 days).
The month with the least sunshine days is May (8.4 days).

Average UV index in May
South Dayton, NY

Average UV index in May - South Dayton, NY
  • Average UV index in May: 4

The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February and December (UV index 1).

Average cloud cover in May
South Dayton, NY

Average cloud cover in May - South Dayton, NY
  • Average cloud cover in May: 43

The month with the most cloud cover is January (Cloud cover 77).
The month with the least cloud cover is August (Cloud cover 31).

Average visibility in May
South Dayton, NY

Average visibility in May - South Dayton, NY
  • Average visibility in May: 6mi

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

South Dayton, New York, USA

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