May weather forecast
Miles City, MT

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Weather in May

May in Miles City, Montana, spells the definitive beginning of warmer weather, with temperatures continuing to rise. The hallmark of this month is arguably the considerable decrease in cloud coverage when compared to the earlier months, resulting in more sunshine. Despite being one of the months with the highest average rainfall, 1.1" (28mm), it manages to strike a balance between sunny and rainy days. The city also witnesses the maximum daylight hours in the year during May. The advent of May in Miles City, Montana ushers in higher temperatures, clearer skies, and longer days.

Temperature

As May arrives, Miles City's weather shows an increase in high-temperatures, moving from April's moderate 55.4°F (13°C) to a still refreshing 66.6°F (19.2°C). Miles City's temperature drops to an average low of 47.5°F (8.6°C) during the nights of May.

Humidity

In Miles City, the average relative humidity in May is 54%.

Rainfall

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

Snowfall

January through May, October through December are months with snowfall in Miles City. May is the last month it regularly snows. During 0.3 snowfall days, in May, Miles City aggregates 0.12" (3mm) of snow. Throughout the year, there are 43.4 snowfall days, and 9.13" (232mm) of snow is accumulated.

Daylight

The average length of the day in May in Miles City is 15h and 1min.
On the first day of the month, sunrise is at 5:47 am and sunset at 8:13 pm. On the last day of May, sunrise is at 5:14 am and sunset at 8:47 pm MDT.

Sunshine

In Miles City, the average sunshine in May is 10h.

UV index

In May, the average daily maximum UV index in Miles City is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 5 in May transforms into the following instructions:
Heed the precautions - Suggestions to avoid sunburn are made. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
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Frequently asked questions

What are the temperatures in Miles City in May?

May temperatures vary between a 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 in Miles City?

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

What is the rainiest month in Miles City?

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

How much does it rain in Miles City in May?

In Miles City, 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 Miles City?

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

What is the average length of the day in May in Miles City?

The average day length in May is 15h and 1min.

When is the sunrise / sunset in May in Miles City?

In May, on the first day of the month, sunrise is at 5:47 am and sunset at 8:13 pm. On the last day of the month, sunrise is at 5:14 am and sunset at 8:47 pm MDT.

How many hours of sunshine does Miles City have in May?

In May, the average sunshine duration is 10h.

How high is the UV index in May in Miles City?

The average daily maximum UV index in May in Miles City, Montana, is 5. A UV Index reading of 3 to 5 represents a medium hazard to health 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
Miles City, MT

Average temperature in May - Miles City, 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
Miles City, MT

Average pressure in May - Miles City, 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
Miles City, MT

Average wind speed in May - Miles City, 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
Miles City, MT

Average humidity in May - Miles City, 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
Miles City, MT

Average rainfall in May - Miles City, 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
Miles City, MT

Average rainfall days in May - Miles City, 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
Miles City, MT

Average snowfall in May - Miles City, 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
Miles City, MT

Average snowfall days in May - Miles City, 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
Miles City, MT

Average daylight in May / Average sunshine in May - Miles City, 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
Miles City, MT

Average sunshine days in May - Miles City, 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
Miles City, MT

Average UV index in May - Miles City, 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
Miles City, MT

Average cloud cover in May - Miles City, 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
Miles City, MT

Average visibility in May - Miles City, 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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Miles City, Montana, USA

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