May weather forecast
Big Flats, NY

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Weather in May

May, the last month of the spring in Big Flats, is an enjoyable month, with an average temperature varying between 67.1°F (19.5°C) and 46.8°F (8.2°C).

Temperature

With the beginning of May, Big Flats's average high-temperature sees an increase, transitioning from a cool 53.6°F (12°C) in April to a comfortable 67.1°F (19.5°C). May sees the temperature falling to a mean low of 46.8°F (8.2°C).

Humidity

April through July, with an average relative humidity of 78%, are the least humid months.

Rainfall

In Big Flats, during May, the rain falls for 17.7 days and regularly aggregates up to 2.8" (71mm) of precipitation. In Big Flats, during the entire year, the rain falls for 172.7 days and collects up to 29.57" (751mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. May is the last month it regularly snows. During 0.5 snowfall days, in May, Big Flats aggregates 0.24" (6mm) of snow. In Big Flats, during the entire year, snow falls for 76.6 days and aggregates up to 34.61" (879mm) of snow.

Daylight

In May, the average length of the day is 14h and 36min.
On the first day of the month, sunrise is at 6:02 am and sunset at 8:07 pm. On the last day of May, sunrise is at 5:34 am and sunset at 8:36 pm EDT.

Sunshine

The average sunshine in May is 8.6h.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 5. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: The maximum UV index of 5 during May leads to these instructions:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
Updated: Jul 29, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average May temperature?

An average high-temperature, in May, in Big Flats, is 67.1°F (19.5°C) and the average low-temperature is 46.8°F (8.2°C).

What is the least humid month?

The months with the lowest humidity are April through July, with an average relative humidity of 78%.

What is the average humidity in May?

The average relative humidity in May is 78%.

How many days does it rain in May?

In May, the rain falls for 17.7 days. Throughout May, 2.8" (71mm) of precipitation is accumulated.

What is the last month it snows?

May is the last month it regularly snows. During 0.5 snowfall days, in May, Big Flats aggregates 0.24" (6mm) of snow.

How many hours of daylight does Big Flats have in May?

In May, the average day length in Big Flats is 14h and 36min.

When are sunrise and sunset in May?

In May, on the first day of the month, sunrise is at 6:02 am and sunset at 8:07 pm. On the last day of the month, sunrise is at 5:34 am and sunset at 8:36 pm EDT.

How many hours of sunshine does Big Flats have in May?

In Big Flats, the average sunshine duration in May is 8.6h.

What are the months with the highest UV index?

The months with the highest UV index are May through August, with an average maximum UV index of 5.

What is the UV index intensity in May in Big Flats?

In Big Flats, 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 days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Big Flats, NY

Average temperature in May - Big Flats, NY
  • Average high temperature in May: 67.1°F

The warmest month (with the highest average high temperature) is July (80.1°F).
The month with the lowest average high temperature is January (28.8°F).

  • Average low temperature in May: 46.8°F

The month with the highest average low temperature is July (57.7°F).
The coldest month (with the lowest average low temperature) is January (17.2°F).

Average pressure in May
Big Flats, NY

Average pressure in May - Big Flats, NY
  • Average pressure in May: 30"Hg

The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in May
Big Flats, NY

Average wind speed in May - Big Flats, NY
  • Average wind speed in May: 7.3mph

The windiest month (with the highest average wind speed) is January (9.2mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).

Average humidity in May
Big Flats, NY

Average humidity in May - Big Flats, NY
  • Average humidity in May: 78%

The month with the highest relative humidity is February (85%).
The months with the lowest relative humidity are April, May, June and July (78%).

Average rainfall in May
Big Flats, NY

Average rainfall in May - Big Flats, NY
  • Average rainfall in May: 2.8"

The wettest month (with the highest rainfall) is April (3.07").
The driest months (with the least rainfall) are January and November (1.89").

Average rainfall days in May
Big Flats, NY

Average rainfall days in May - Big Flats, NY
  • Average rainfall days in May: 17.7 days

The month with the highest number of rainy days is July (19 days).
The month with the least rainy days is February (8.3 days).

Average snowfall in May
Big Flats, NY

Average snowfall in May - Big Flats, NY
  • Average snowfall in May: 0.24"

The month with the highest snowfall is February (8.82").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in May
Big Flats, NY

Average snowfall days in May - Big Flats, NY
  • Average snowfall days in May: 0.5 days

The month with the highest number of snowfall days is January (17.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in May /
Average sunshine in May
Big Flats, NY

Average daylight in May / Average sunshine in May - Big Flats, 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 12min).

  • Average sunshine in May: 8h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 3h and 6min).

Average sunshine days in May
Big Flats, NY

Average sunshine days in May - Big Flats, NY
  • Average sunshine days in May: 10.8 days

The month with the most sunshine days is September (14.2 days).
The month with the least sunshine days is February (7.3 days).

Average UV index in May
Big Flats, NY

Average UV index in May - Big Flats, NY
  • Average UV index in May: 5

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

Average cloud cover in May
Big Flats, NY

Average cloud cover in May - Big Flats, NY
  • Average cloud cover in May: 47

The months with the most cloud cover are January and February (Cloud cover 69).
The months with the least cloud cover are July and August (Cloud cover 36).

Average visibility in May
Big Flats, NY

Average visibility in May - Big Flats, NY
  • Average visibility in May: 5mi

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

Big Flats, New York, USA

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