May weather forecast
Fort Shaw, MT

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Weather in May

The last month of the spring, May, is a comfortable month in Fort Shaw, Montana, with an average temperature ranging between min 41.9°F (5.5°C) and max 62.2°F (16.8°C).

Temperature

Fort Shaw experiences a temperature shift with the start of May, with average high-temperatures moving from a fresh 51.4°F (10.8°C) in April to a refreshing 62.2°F (16.8°C). Fort Shaw cools down to an average low-temperature of 41.9°F (5.5°C) throughout the month of May.

Humidity

In May, the average relative humidity is 59%.

Rainfall

In Fort Shaw, in May, it is raining for 15.2 days, with typically 1.69" (43mm) of accumulated precipitation. In Fort Shaw, during the entire year, the rain falls for 112.8 days and collects up to 12.95" (329mm) of precipitation.

Snowfall

January through May, September through December are months with snowfall in Fort Shaw. May is the last month it regularly snows. During 1.2 snowfall days, in May, Fort Shaw aggregates 0.63" (16mm) of snow. Throughout the year, in Fort Shaw, Montana, there are 69.4 snowfall days, and 35.35" (898mm) of snow is accumulated.

Daylight

The average length of the day in May is 15h and 9min.
On the first day of the month, sunrise is at 6:08 am and sunset at 8:39 pm. On the last day of May, sunrise is at 5:33 am and sunset at 9:16 pm MDT.

Sunshine

The average sunshine in May is 10.1h.

UV index

In Fort Shaw, the average daily maximum UV index in May is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the average person.
Note: A typical high UV index of 4 in May suggests the following recommendations:
Be vigilant - Preventing sunburn is recommended. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Experience reduced UV exposure by about half when donning a wide-brim hat. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
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Frequently asked questions

What are the temperatures in Fort Shaw in May?

The high-temperature in Fort Shaw, Montana, during May is 62.2°F (16.8°C) and the low-temperature is 41.9°F (5.5°C).

What is the average humidity in May in Fort Shaw?

In Fort Shaw, the average relative humidity in May is 59%.

How many days does it rain in May in Fort Shaw?

In Fort Shaw, in May, it is raining for 15.2 days, with typically 1.69" (43mm) of accumulated precipitation.

What is the last month it snows in Fort Shaw?

May is the last month it regularly snows. During 1.2 snowfall days, in May, Fort Shaw aggregates 0.63" (16mm) of snow.

What is the average length of the day in May in Fort Shaw?

The average day length in May in Fort Shaw is 15h and 9min.

What time are sunrise and sunset in May in Fort Shaw?

On the first day of May, sunrise is at 6:08 am and sunset at 8:39 pm. On the last day of the month, sunrise is at 5:33 am and sunset at 9:16 pm MDT.

How many hours of sunshine does Fort Shaw have in May?

The average sunshine duration in May is 10.1h.

How high is the UV index in May in Fort Shaw?

In May, the average daily maximum UV index in Fort Shaw, Montana, is 4. A UV Index value of 3 to 5 symbolizes a medium health risk 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
Fort Shaw, MT

Average temperature in May - Fort Shaw, MT
  • Average high temperature in May: 62.2°F

The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is December (29.5°F).

  • Average low temperature in May: 41.9°F

The month with the highest average low temperature is August (56.7°F).
The coldest month (with the lowest average low temperature) is December (17.4°F).

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Average pressure in May
Fort Shaw, MT

Average pressure in May - Fort Shaw, MT
  • Average pressure in May: 29.93"Hg

The months with the highest atmospheric pressure are January and December (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).

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Average wind speed in May
Fort Shaw, MT

Average wind speed in May - Fort Shaw, MT
  • Average wind speed in May: 8.1mph

The windiest months (with the highest average wind speed) are January and November (10.7mph).
The calmest month (with the lowest average wind speed) is August (7.3mph).

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Average humidity in May
Fort Shaw, MT

Average humidity in May - Fort Shaw, MT
  • Average humidity in May: 59%

The month with the highest relative humidity is January (78%).
The month with the lowest relative humidity is August (41%).

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Average rainfall in May
Fort Shaw, MT

Average rainfall in May - Fort Shaw, MT
  • Average rainfall in May: 1.69"

The wettest month (with the highest rainfall) is June (2.05").
The driest months (with the least rainfall) are January and July (0.63").

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Average rainfall days in May
Fort Shaw, MT

Average rainfall days in May - Fort Shaw, MT
  • Average rainfall days in May: 15.2 days

The month with the highest number of rainy days is May (15.2 days).
The month with the least rainy days is January (4.8 days).

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Average snowfall in May
Fort Shaw, MT

Average snowfall in May - Fort Shaw, MT
  • Average snowfall in May: 0.63"

The month with the highest snowfall is February (6.34").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in May
Fort Shaw, MT

Average snowfall days in May - Fort Shaw, MT
  • Average snowfall days in May: 1.2 days

The month with the highest number of snowfall days is February (14.4 days).
The months with the least snowfall days are July and August (0 days).

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Average daylight in May /
Average sunshine in May
Fort Shaw, MT

Average daylight in May / Average sunshine in May - Fort Shaw, MT
  • Average daylight in May: 15h and 1min

The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).

  • Average sunshine in May: 10h and 1min

The month with the most sunshine is July (Average sunshine: 11h and 54min).
The months with the least sunshine are January and December (Average sunshine: 5h and 24min).

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Average sunshine days in May
Fort Shaw, MT

Average sunshine days in May - Fort Shaw, MT
  • Average sunshine days in May: 12.8 days

The month with the most sunshine days is September (18.8 days).
The month with the least sunshine days is April (10.3 days).

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Average UV index in May
Fort Shaw, MT

Average UV index in May - Fort Shaw, MT
  • Average UV index in May: 4

The month with the highest UV index is July (UV index 6).
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
Fort Shaw, MT

Average cloud cover in May - Fort Shaw, MT
  • Average cloud cover in May: 34

The month with the most cloud cover is February (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 14).

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Average visibility in May
Fort Shaw, MT

Average visibility in May - Fort Shaw, 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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Fort Shaw, Montana, USA

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