May weather forecast
Bristol, NH

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Weather in May

May, the last month of the spring in Bristol, is an enjoyable month, with an average temperature fluctuating between 64.8°F (18.2°C) and 43.5°F (6.4°C).

Temperature

With the onset of May, Bristol's average high-temperature experiences a rise, moving from April's cool 50.5°F (10.3°C) to an enjoyable 64.8°F (18.2°C). Throughout the month of May, Bristol witnesses an average low-temperature of 43.5°F (6.4°C).

Humidity

In Bristol, the average relative humidity in May is 76%.

Rainfall

In Bristol, New Hampshire, in May, it is raining for 15.6 days, with typically 2.28" (58mm) of accumulated precipitation. Throughout the year, there are 157.6 rainfall days, and 27.72" (704mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall in Bristol. May is the last month it regularly snows. During 0.3 snowfall days, in May, Bristol aggregates 0.35" (9mm) of snow. In Bristol, during the entire year, snow falls for 64.6 days and aggregates up to 35.98" (914mm) of snow.

Daylight

In May, the average length of the day in Bristol is 14h and 44min.
On the first day of May, sunrise is at 5:38 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 5:08 am and sunset at 8:20 pm EDT.

Sunshine

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

UV index

May through August, with an average maximum UV index of 5, are months with the highest UV index in Bristol. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: In May, a regular UV index of 5 translates into these guidelines:
Preventative actions are necessary - Recommendations to ward off sunburn are given. The Sun's radiation is especially intense around midday; try to stay in shade during this period. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
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Frequently asked questions

What is the average May temperature in Bristol?

The high-temperature, in May, in Bristol, is 64.8°F (18.2°C), while the low-temperature averages to 43.5°F (6.4°C).

What is the average humidity in May in Bristol?

The average relative humidity in May in Bristol, New Hampshire, is 76%.

How much does it rain in Bristol in May?

In May, in Bristol, New Hampshire, the rain falls for 15.6 days. Throughout May, 2.28" (58mm) of precipitation is accumulated.

What is the last month it snows in Bristol?

May is the last month it regularly snows. During 0.3 snowfall days, in May, Bristol aggregates 0.35" (9mm) of snow.

How many hours of daylight does Bristol have in May?

The average day length in May in Bristol, New Hampshire, is 14h and 44min.

When is the sunrise / sunset in May in Bristol?

On the first day of May, sunrise is at 5:38 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 5:08 am and sunset at 8:20 pm EDT.

How many hours of sunshine does Bristol have in May?

In Bristol, New Hampshire, the average sunshine duration in May is 8.1h.

What are the months with the highest UV index in Bristol?

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

What is the UV index intensity in May in Bristol?

In Bristol, the average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a medium hazard to health from exposure to Sun's UV rays.
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
Bristol, NH

Average temperature in May - Bristol, NH
  • Average high temperature in May: 64.8°F

The warmest month (with the highest average high temperature) is July (78.6°F).
The month with the lowest average high temperature is January (25.7°F).

  • Average low temperature in May: 43.5°F

The month with the highest average low temperature is July (57°F).
The coldest month (with the lowest average low temperature) is January (12.7°F).

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Average pressure in May
Bristol, NH

Average pressure in May - Bristol, NH
  • Average pressure in May: 29.99"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).

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Average wind speed in May
Bristol, NH

Average wind speed in May - Bristol, NH
  • Average wind speed in May: 5.9mph

The windiest months (with the highest average wind speed) are January and February (7.1mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).

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Average humidity in May
Bristol, NH

Average humidity in May - Bristol, NH
  • Average humidity in May: 76%

The months with the highest relative humidity are January and February (86%).
The month with the lowest relative humidity is April (75%).

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Average rainfall in May
Bristol, NH

Average rainfall in May - Bristol, NH
  • Average rainfall in May: 2.28"

The wettest month (with the highest rainfall) is October (3.15").
The driest month (with the least rainfall) is September (1.85").

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Average rainfall days in May
Bristol, NH

Average rainfall days in May - Bristol, NH
  • Average rainfall days in May: 15.6 days

The month with the highest number of rainy days is April (15.7 days).
The month with the least rainy days is January (10.1 days).

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Average snowfall in May
Bristol, NH

Average snowfall in May - Bristol, NH
  • Average snowfall in May: 0.35"

The month with the highest snowfall is February (9.41").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in May
Bristol, NH

Average snowfall days in May - Bristol, NH
  • Average snowfall days in May: 0.3 days

The month with the highest number of snowfall days is January (14.5 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in May /
Average sunshine in May
Bristol, NH

Average daylight in May / Average sunshine in May - Bristol, NH
  • Average daylight in May: 14h and 4min

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 1min

The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 4h and 0min).

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Average sunshine days in May
Bristol, NH

Average sunshine days in May - Bristol, NH
  • Average sunshine days in May: 13 days

The month with the most sunshine days is September (16.8 days).
The month with the least sunshine days is February (10.2 days).

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Average UV index in May
Bristol, NH

Average UV index in May - Bristol, NH
  • 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, February, March, October, November and December (UV index 2).

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Average cloud cover in May
Bristol, NH

Average cloud cover in May - Bristol, NH
  • Average cloud cover in May: 49

The months with the most cloud cover are February and March (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 36).

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Average visibility in May
Bristol, NH

Average visibility in May - Bristol, NH
  • Average visibility in May: 5mi

The months with the highest visibility are April, May, June, July, August, October, November and December (5mi).
The months with the lowest visibility are January, February, March and September (4mi).

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Bristol, New Hampshire, USA

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