May weather forecast
Grand Lake Stream, ME

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Weather in May

The last month of the spring, May, is a comfortable month in Grand Lake Stream, Maine, with temperature in the range of an average low of 41.7°F (5.4°C) and an average high of 61.3°F (16.3°C).

Temperature

The start of May brings a shift in the average high-temperature, increasing from April's chilly 48.7°F (9.3°C) to a comfortable 61.3°F (16.3°C). Nighttime temperature in Grand Lake Stream dips to a mean of 41.7°F (5.4°C) during May.

Humidity

The least humid month is May, with an average relative humidity of 77%.

Rainfall

In Grand Lake Stream, in May, it is raining for 13.5 days, with typically 1.38" (35mm) of accumulated precipitation. Throughout the year, in Grand Lake Stream, there are 122.6 rainfall days, and 14.53" (369mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. May is the last month it regularly snows. During 0.3 snowfall days, in May, Grand Lake Stream aggregates 0.2" (5mm) of snow. In Grand Lake Stream, during the entire year, snow falls for 60.6 days and aggregates up to 17.91" (455mm) of snow.

Daylight

In Grand Lake Stream, the average length of the day in May is 14h and 53min.
On the first day of the month, sunrise is at 5:18 am and sunset at 7:37 pm. On the last day of May, sunrise is at 4:46 am and sunset at 8:10 pm EDT.

Sunshine

In Grand Lake Stream, Maine, the average sunshine in May is 7.6h.

UV index

In May, the average daily maximum UV index in Grand Lake Stream is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for the average person.
Note: A daily maximum UV index of 4 in May translates into the following instructions:
Put precautions into practice - Protective measures against sun-induced damage are advised. When the Sun is at its strongest around midday, find shade and limit exposure. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
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Frequently asked questions

What is the usual temperature for Grand Lake Stream in May?

In Grand Lake Stream, 61.3°F (16.3°C) is the average high-temperature and 41.7°F (5.4°C) is the average low-temperature during May.

What is the least humid month in Grand Lake Stream?

The least humid month in Grand Lake Stream is May, with an average relative humidity of 77%.

What is the average humidity in May in Grand Lake Stream?

In Grand Lake Stream, Maine, the average relative humidity in May is 77%.

How much does it rain in Grand Lake Stream in May?

In Grand Lake Stream, in May, it is raining for 13.5 days, with typically 1.38" (35mm) of accumulated precipitation.

What is the last month it snows in Grand Lake Stream?

May is the last month it regularly snows in Grand Lake Stream. During 0.3 snowfall days, in May, Grand Lake Stream aggregates 0.2" (5mm) of snow.

What is the average length of the day in May in Grand Lake Stream?

The average day length in May is 14h and 53min.

When is the sunrise / sunset in May in Grand Lake Stream?

In May, on the first day of the month, sunrise is at 5:18 am and sunset at 7:37 pm. On the last day of the month, in Grand Lake Stream, Maine, sunrise is at 4:46 am and sunset at 8:10 pm EDT.

How long on average sun shines in May in Grand Lake Stream?

The average sunshine duration in May is 7.6h.

What is the UV index reading in May in Grand Lake Stream?

The average daily maximum UV index in May in Grand Lake Stream, Maine, is 4. A UV Index reading of 3 to 5 represents a moderate health threat from 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
Grand Lake Stream, ME

Average temperature in May - Grand Lake Stream, ME
  • Average high temperature in May: 61.3°F

The warmest month (with the highest average high temperature) is July (77.2°F).
The month with the lowest average high temperature is January (25.5°F).

  • Average low temperature in May: 41.7°F

The month with the highest average low temperature is July (56.1°F).
The coldest month (with the lowest average low temperature) is January (12.4°F).

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Average pressure in May
Grand Lake Stream, ME

Average pressure in May - Grand Lake Stream, ME
  • Average pressure in May: 29.98"Hg

The month with the highest atmospheric pressure is September (30.03"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in May
Grand Lake Stream, ME

Average wind speed in May - Grand Lake Stream, ME
  • Average wind speed in May: 6.8mph

The windiest month (with the highest average wind speed) is March (8mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).

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Average humidity in May
Grand Lake Stream, ME

Average humidity in May - Grand Lake Stream, ME
  • Average humidity in May: 77%

The month with the highest relative humidity is February (88%).
The month with the lowest relative humidity is May (77%).

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Average rainfall in May
Grand Lake Stream, ME

Average rainfall in May - Grand Lake Stream, ME
  • Average rainfall in May: 1.38"

The wettest month (with the highest rainfall) is November (1.61").
The driest month (with the least rainfall) is September (0.91").

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Average rainfall days in May
Grand Lake Stream, ME

Average rainfall days in May - Grand Lake Stream, ME
  • Average rainfall days in May: 13.5 days

The month with the highest number of rainy days is April (14.2 days).
The month with the least rainy days is February (5.1 days).

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Average snowfall in May
Grand Lake Stream, ME

Average snowfall in May - Grand Lake Stream, ME
  • Average snowfall in May: 0.2"

The month with the highest snowfall is February (3.7").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in May
Grand Lake Stream, ME

Average snowfall days in May - Grand Lake Stream, ME
  • Average snowfall days in May: 0.3 days

The month with the highest number of snowfall days is March (13.4 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
Grand Lake Stream, ME

Average daylight in May / Average sunshine in May - Grand Lake Stream, ME
  • Average daylight in May: 14h and 5min

The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).

  • Average sunshine in May: 7h and 4min

The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is February (Average sunshine: 3h and 18min).

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Average sunshine days in May
Grand Lake Stream, ME

Average sunshine days in May - Grand Lake Stream, ME
  • Average sunshine days in May: 14.4 days

The month with the most sunshine days is September (18.4 days).
The month with the least sunshine days is April (11.6 days).

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Average UV index in May
Grand Lake Stream, ME

Average UV index in May - Grand Lake Stream, ME
  • 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 February, November and December (UV index 1).

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Average cloud cover in May
Grand Lake Stream, ME

Average cloud cover in May - Grand Lake Stream, ME
  • Average cloud cover in May: 52

The month with the most cloud cover is February (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 42).

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Average visibility in May
Grand Lake Stream, ME

Average visibility in May - Grand Lake Stream, ME
  • Average visibility in May: 5mi

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

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Grand Lake Stream, Maine, USA

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