May weather forecast
Boston, KY

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Weather in May

May, the last month of the spring in Boston, is a moderately hot month, with an average temperature varying between 75.4°F (24.1°C) and 57.4°F (14.1°C).

Temperature

May's arrival coincides with a marginal rise in the average high-temperature, moving from April's comfortable 66.6°F (19.2°C) to a warm 75.4°F (24.1°C). In Boston, the nighttime temperature averages to a refreshing 57.4°F (14.1°C) during May.

Humidity

In May, the average relative humidity is 79%.

Rainfall

In Boston, in May, it is raining for 18.2 days, with typically 3.35" (85mm) of accumulated precipitation. Throughout the year, in Boston, Kentucky, there are 160.2 rainfall days, and 32.32" (821mm) of precipitation is accumulated.

Snowfall

In Boston, Kentucky, snow does not fall in May through October.

Daylight

In Boston, Kentucky, the average length of the day in May is 14h and 14min.
On the first day of the month, sunrise is at 6:45 am and sunset at 8:33 pm. On the last day of May, in Boston, sunrise is at 6:22 am and sunset at 8:58 pm EDT.

Sunshine

In May, the average sunshine is 9h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for the average person.
Note: The maximum daily UV index of 6 during May translates into the following directions:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. Stay sun-safe with clothing that is both closely woven and worn loosely.
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Frequently asked questions

What is the usual temperature for Boston in May?

The high-temperature in Boston during May is 75.4°F (24.1°C) and the low-temperature is 57.4°F (14.1°C).

What is the average humidity in May in Boston?

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

How much does it rain in Boston in May?

In Boston, in May, during 18.2 rainfall days, 3.35" (85mm) of precipitation is typically accumulated.

When it does not snow in Boston?

In Boston, Kentucky, snow does not fall in May through October.

Does it snow in Boston in May?

In May, in Boston, it doesn't snow. April is the latest month when it typically snows.

How many hours of daylight does Boston have in May?

In May, the average day length in Boston is 14h and 14min.

What time are sunrise and sunset in May in Boston?

In May, on the first day of the month, sunrise is at 6:45 am and sunset at 8:33 pm. On the last day of the month, in Boston, Kentucky, sunrise is at 6:22 am and sunset at 8:58 pm EDT.

How long on average sun shines in May in Boston?

In Boston, the average sunshine duration in May is 9h.

What is the month with the highest UV index in Boston?

May through August, with an average maximum UV index of 6, are months with the highest UV index.

What is the UV index intensity in May in Boston?

In Boston, the average daily maximum UV index in May is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to Sun's UV rays.
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
Boston, KY

Average temperature in May - Boston, KY
  • Average high temperature in May: 75.4°F

The warmest month (with the highest average high temperature) is July (86.7°F).
The month with the lowest average high temperature is January (39.7°F).

  • Average low temperature in May: 57.4°F

The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is January (26.6°F).

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Average pressure in May
Boston, KY

Average pressure in May - Boston, KY
  • Average pressure in May: 29.98"Hg

The months with the highest atmospheric pressure are January and November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

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Average wind speed in May
Boston, KY

Average wind speed in May - Boston, KY
  • Average wind speed in May: 6.3mph

The windiest month (with the highest average wind speed) is January (8.1mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).

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Average humidity in May
Boston, KY

Average humidity in May - Boston, KY
  • Average humidity in May: 79%

The months with the highest relative humidity are February and December (80%).
The months with the lowest relative humidity are August, September and October (74%).

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Average rainfall in May
Boston, KY

Average rainfall in May - Boston, KY
  • Average rainfall in May: 3.35"

The wettest month (with the highest rainfall) is April (3.46").
The driest month (with the least rainfall) is September (1.93").

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Average rainfall days in May
Boston, KY

Average rainfall days in May - Boston, KY
  • Average rainfall days in May: 18.2 days

The month with the highest number of rainy days is May (18.2 days).
The month with the least rainy days is January (9.8 days).

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Average snowfall in May
Boston, KY

Average snowfall in May - Boston, KY
  • Average snowfall in May: 0"

The month with the highest snowfall is February (2.17").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in May
Boston, KY

Average snowfall days in May - Boston, KY
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is February (6.7 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in May /
Average sunshine in May
Boston, KY

Average daylight in May / Average sunshine in May - Boston, KY
  • Average daylight in May: 14h and 1min

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in May: 9h and 0min

The month with the most sunshine is June (Average sunshine: 10h and 18min).
The months with the least sunshine are January and December (Average sunshine: 4h and 30min).

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Average sunshine days in May
Boston, KY

Average sunshine days in May - Boston, KY
  • Average sunshine days in May: 10.4 days

The month with the most sunshine days is October (18.6 days).
The month with the least sunshine days is May (10.4 days).

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Average UV index in May
Boston, KY

Average UV index in May - Boston, KY
  • Average UV index in May: 6

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in May
Boston, KY

Average cloud cover in May - Boston, KY
  • Average cloud cover in May: 40

The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 28).

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Average visibility in May
Boston, KY

Average visibility in May - Boston, KY
  • Average visibility in May: 5mi

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

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Boston, Kentucky, USA

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