May weather forecast
White Sulphur Springs, MT

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Weather in May

White Sulphur Springs embraces full-fledged spring in May. This month is characterised by warmer temperatures reaching a comfy 57.9°F (14.4°C) on average. May also marks the onset of the rainy season, with the highest average rainfall of 2.05" (52mm) compared to previous months. It is a month of rapid growth and blooming flowers, benefits from the increased daylight and rain. Local farms flourish, wildlife is active, setting a lively scene for outdoor pursuits.

Temperature

White Sulphur Springs sees a rise in temperature during May, with average high-temperatures transitioning from a chilly 46.2°F (7.9°C) in April to a mild 57.9°F (14.4°C). White Sulphur Springs, in May, experiences a marked contrast from daytime zeniths to a steady average low-temperature of 35.8°F (2.1°C).

Humidity

The average relative humidity in May is 65%.

Rainfall

The month with the most rainfall is May, when the rain falls for 15.1 days and typically aggregates up to 2.05" (52mm) of precipitation.

Snowfall

January through June, September through December are months with snowfall. In White Sulphur Springs, Montana, in May, during 6.2 snowfall days, 4.37" (111mm) of snow is typically accumulated. Throughout the year, there are 97.8 snowfall days, and 52.68" (1338mm) of snow is accumulated.

Daylight

In May, the average length of the day is 15h and 2min.
On the first day of the month, sunrise is at 6:07 am and sunset at 8:33 pm. On the last day of May, sunrise is at 5:34 am and sunset at 9:08 pm MDT.

Sunshine

In May, the average sunshine is 10.5h.

UV index

In White Sulphur Springs, the average daily maximum UV index in May is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for average individuals.
Note: In May, the maximum UV index of 4 translates into these guidelines:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Enhance your sun protection with tightly woven, yet airy clothing. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
Updated: Jun 22, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average May temperature in White Sulphur Springs?

In May, the average high-temperature and low-temperature are 57.9°F (14.4°C) and 35.8°F (2.1°C) respectively.

What is the average humidity in May?

In White Sulphur Springs, the average relative humidity in May is 65%.

What is the rainiest month?

The month with the most rainfall is May, when the rain falls for 15.1 days and typically aggregates up to 2.05" (52mm) of precipitation.

How much does it rain in May?

In White Sulphur Springs, in May, during 15.1 rainfall days, 2.05" (52mm) of precipitation is typically accumulated.

How much does it snow in May?

In White Sulphur Springs, in May, snow falls for 6.2 days, with typically accumulated 4.37" (111mm) of snow.

How many hours of daylight does White Sulphur Springs have in May?

The average day length in May is 15h and 2min.

What time are sunrise and sunset in May?

On the first day of May in White Sulphur Springs, sunrise is at 6:07 am and sunset at 8:33 pm. On the last day of the month, sunrise is at 5:34 am and sunset at 9:08 pm MDT.

How long on average sun shines in May?

In May, the average sunshine duration is 10.5h.

How high is the UV index in May?

The average daily maximum UV index in May is 4. 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
White Sulphur Springs, MT

Average temperature in May - White Sulphur Springs, MT
  • Average high temperature in May: 57.9°F

The warmest month (with the highest average high temperature) is July (79.5°F).
The month with the lowest average high temperature is December (25.3°F).

  • Average low temperature in May: 35.8°F

The month with the highest average low temperature is July (48.7°F).
The coldest month (with the lowest average low temperature) is December (10.9°F).

Average pressure in May
White Sulphur Springs, MT

Average pressure in May - White Sulphur Springs, MT
  • Average pressure in May: 29.94"Hg

The month with the highest atmospheric pressure is January (30.18"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).

Average wind speed in May
White Sulphur Springs, MT

Average wind speed in May - White Sulphur Springs, MT
  • Average wind speed in May: 5.4mph

The windiest month (with the highest average wind speed) is April (5.9mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).

Average humidity in May
White Sulphur Springs, MT

Average humidity in May - White Sulphur Springs, MT
  • Average humidity in May: 65%

The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is August (48%).

Average rainfall in May
White Sulphur Springs, MT

Average rainfall in May - White Sulphur Springs, MT
  • Average rainfall in May: 2.05"

The wettest month (with the highest rainfall) is May (2.05").
The driest month (with the least rainfall) is January (0.59").

Average rainfall days in May
White Sulphur Springs, MT

Average rainfall days in May - White Sulphur Springs, MT
  • Average rainfall days in May: 15.1 days

The month with the highest number of rainy days is May (15.1 days).
The month with the least rainy days is November (3.8 days).

Average snowfall in May
White Sulphur Springs, MT

Average snowfall in May - White Sulphur Springs, MT
  • Average snowfall in May: 4.37"

The month with the highest snowfall is February (9.61").
The months with the least snowfall are July and August (0").

Average snowfall days in May
White Sulphur Springs, MT

Average snowfall days in May - White Sulphur Springs, MT
  • Average snowfall days in May: 6.2 days

The month with the highest number of snowfall days is February (16.5 days).
The months with the least snowfall days are July and August (0 days).

Average daylight in May /
Average sunshine in May
White Sulphur Springs, MT

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

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

  • Average sunshine in May: 10h and 3min

The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is January (Average sunshine: 5h and 36min).

Average sunshine days in May
White Sulphur Springs, MT

Average sunshine days in May - White Sulphur Springs, MT
  • Average sunshine days in May: 11.1 days

The month with the most sunshine days is September (18.4 days).
The month with the least sunshine days is April (10.6 days).

Average UV index in May
White Sulphur Springs, MT

Average UV index in May - White Sulphur Springs, MT
  • Average UV index in May: 4

The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February and December (UV index 1).

Average cloud cover in May
White Sulphur Springs, MT

Average cloud cover in May - White Sulphur Springs, MT
  • Average cloud cover in May: 32

The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 14).

Average visibility in May
White Sulphur Springs, MT

Average visibility in May - White Sulphur Springs, MT
  • Average visibility in May: 6mi

The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February and December (4mi).

White Sulphur Springs, Montana, USA

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