May weather forecast
Coalwood, MT

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Weather in May

May, the last month of the spring in Coalwood, is an enjoyable month, with temperature in the range of an average low of 47.5°F (8.6°C) and an average high of 66.6°F (19.2°C).

Temperature

An increase in the average high-temperature marks May, moving from April's refreshing 55.4°F (13°C) to a comfortable 66.6°F (19.2°C). Coalwood experiences a nighttime temperature average of 47.5°F (8.6°C) during May.

Humidity

The average relative humidity in May in Coalwood is 54%.

Rainfall

May is the month with the most rainfall in Coalwood. Rain falls for 11.3 days and accumulates 1.1" (28mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. May is the last month it regularly snows in Coalwood. During 0.3 snowfall days, in May, Coalwood aggregates 0.12" (3mm) of snow. In Coalwood, during the entire year, snow falls for 43.4 days and aggregates up to 9.13" (232mm) of snow.

Daylight

In May, the average length of the day is 14h and 57min.
On the first day of the month, sunrise is at 5:48 am and sunset at 8:10 pm. On the last day of May, sunrise is at 5:16 am and sunset at 8:44 pm MDT.

Sunshine

In May, the average sunshine in Coalwood is 10h.

UV index

In May, the average daily maximum UV index in Coalwood, Montana, is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the average person.
Note: The maximum UV index, 5 during May, leads to the following recommendations:
Guard yourself - An obligation to protect skin and eyes from harm exists. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.
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Frequently asked questions

What is the usual temperature for Coalwood in May?

An average high-temperature, in May, in Coalwood, is 66.6°F (19.2°C) and the average low-temperature is 47.5°F (8.6°C).

What is the average humidity in May in Coalwood?

The average relative humidity in May in Coalwood, Montana, is 54%.

What is the wettest month in Coalwood?

The month with the most rainfall in Coalwood, Montana, is May, when the rain falls for 11.3 days and typically aggregates up to 1.1" (28mm) of precipitation.

How many days does it rain in May in Coalwood?

In Coalwood, Montana, in May, it is raining for 11.3 days, with typically 1.1" (28mm) of accumulated precipitation.

What is the last month it snows in Coalwood?

May is the last month it regularly snows. During 0.3 snowfall days, in May, Coalwood aggregates 0.12" (3mm) of snow.

How many hours of daylight does Coalwood have in May?

In Coalwood, Montana, the average day length in May is 14h and 57min.

When are sunrise and sunset in May in Coalwood?

On the first day of May in Coalwood, Montana, sunrise is at 5:48 am and sunset at 8:10 pm. On the last day of the month, sunrise is at 5:16 am and sunset at 8:44 pm MDT.

How many hours of sunshine does Coalwood have in May?

The average sunshine duration in May in Coalwood is 10h.

How high is the UV index in May in Coalwood?

In Coalwood, Montana, the average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a medium hazard to health 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
Coalwood, MT

Average temperature in May - Coalwood, MT
  • Average high temperature in May: 66.6°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 (28.8°F).

  • Average low temperature in May: 47.5°F

The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (15.1°F).

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Average pressure in May
Coalwood, MT

Average pressure in May - Coalwood, MT
  • Average pressure in May: 29.91"Hg

The months with the highest atmospheric pressure are January and February (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).

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Average wind speed in May
Coalwood, MT

Average wind speed in May - Coalwood, MT
  • Average wind speed in May: 10.6mph

The windiest month (with the highest average wind speed) is April (11.2mph).
The calmest months (with the lowest average wind speed) are February and August (9.3mph).

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Average humidity in May
Coalwood, MT

Average humidity in May - Coalwood, MT
  • Average humidity in May: 54%

The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is August (39%).

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Average rainfall in May
Coalwood, MT

Average rainfall in May - Coalwood, MT
  • Average rainfall in May: 1.1"

The wettest month (with the highest rainfall) is May (1.1").
The driest months (with the least rainfall) are November and December (0.28").

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Average rainfall days in May
Coalwood, MT

Average rainfall days in May - Coalwood, MT
  • Average rainfall days in May: 11.3 days

The month with the highest number of rainy days is May (11.3 days).
The month with the least rainy days is December (2.6 days).

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Average snowfall in May
Coalwood, MT

Average snowfall in May - Coalwood, MT
  • Average snowfall in May: 0.12"

The month with the highest snowfall is February (2.2").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in May
Coalwood, MT

Average snowfall days in May - Coalwood, MT
  • Average snowfall days in May: 0.3 days

The month with the highest number of snowfall days is January (10.1 days).
The months with the least snowfall days are June, July and August (0 days).

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Average daylight in May /
Average sunshine in May
Coalwood, MT

Average daylight in May / Average sunshine in May - Coalwood, MT
  • Average daylight in May: 15h and 0min

The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).

  • Average sunshine in May: 10h and 0min

The month with the most sunshine is July (Average sunshine: 11h and 48min).
The months with the least sunshine are January, February and December (Average sunshine: 5h and 6min).

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Average sunshine days in May
Coalwood, MT

Average sunshine days in May - Coalwood, MT
  • Average sunshine days in May: 16.8 days

The month with the most sunshine days is November (22.5 days).
The month with the least sunshine days is April (16.5 days).

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Average UV index in May
Coalwood, MT

Average UV index in May - Coalwood, MT
  • Average UV index in May: 5

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

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Average cloud cover in May
Coalwood, MT

Average cloud cover in May - Coalwood, MT
  • Average cloud cover in May: 33

The months with the most cloud cover are February and December (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 15).

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Average visibility in May
Coalwood, MT

Average visibility in May - Coalwood, MT
  • Average visibility in May: 6mi

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

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Coalwood, Montana, USA

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