May weather forecast
Coalwood, MT

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Weather in May

The last month of the spring, May, is a comfortable month in Coalwood, Montana, with an average temperature varying between 66.6°F (19.2°C) and 47.5°F (8.6°C).

Temperature

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

Humidity

The average relative humidity in May is 54%.

Rainfall

May is the month with the most rainfall. 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. 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

The average length of the day in May 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 Coalwood, the average sunshine in May is 10h.

UV index

In May, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: The maximum daily UV index of 5 in May converts into the following recommendations:
Put precautions into practice - Protective measures against sun-induced damage are advised. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Updated: Jul 27, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Coalwood in May?

During May, Coalwood experiences an average high-temperature of 66.6°F (19.2°C) and a low-temperature of 47.5°F (8.6°C).

What is the average humidity in May?

The average relative humidity in May is 54%.

What is the wettest month?

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

How many days does it rain in May?

In Coalwood, in May, during 11.3 rainfall days, 1.1" (28mm) of precipitation is typically accumulated.

What is the last month it snows?

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

What time are sunrise and sunset in May?

On the first day of May, 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 long on average sun shines in May?

The average sunshine duration in May is 10h.

What is the UV index intensity in May?

The average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a moderate health threat from unprotected exposure to 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).

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).

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).

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%).

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").

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).

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").

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).

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).

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).

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).

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).

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).

Coalwood, Montana, USA

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