May weather forecast
Basin, MT

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Weather in May

May, the last month of the spring in Basin, is a mild month, with temperature in the range of an average low of 35.2°F (1.8°C) and an average high of 58.5°F (14.7°C).

Temperature

The shift from April to May brings an increase in the average high-temperature, moving from a chilly 46.4°F (8°C) to a refreshing 58.5°F (14.7°C). Basin observes a distinct decrease from peak daytime temperatures, with an average low-temperature of 35.2°F (1.8°C) throughout the month of May.

Humidity

In May, the average relative humidity is 64%.

Rainfall

In Basin, Montana, in May, it is raining for 18.2 days, with typically 2.36" (60mm) of accumulated precipitation. In Basin, during the entire year, the rain falls for 133.7 days and collects up to 16.38" (416mm) of precipitation.

Snowfall

Months with snowfall are January through June, September through December. In Basin, in May, snow falls for 4.4 days, with typically accumulated 2.64" (67mm) of snow. In Basin, during the entire year, snow falls for 105.8 days and aggregates up to 55.12" (1400mm) of snow.

Daylight

In May, the average length of the day in Basin is 15h and 1min.
On the first day of May in Basin, Montana, sunrise is at 6:13 am and sunset at 8:38 pm. On the last day of the month, sunrise is at 5:40 am and sunset at 9:13 pm MDT.

Sunshine

In Basin, Montana, the average sunshine in May is 10.2h.

UV index

In Basin, Montana, 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 exposure to the Sun's UV radiation for the ordinary person.
Note: The maximum daily UV index of 4 in May converts into the following recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
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Frequently asked questions

What is the usual temperature for Basin in May?

May temperatures in Basin vary between a high-temperature of 58.5°F (14.7°C) and a low-temperature of 35.2°F (1.8°C).

What is the average humidity in May in Basin?

In May, the average relative humidity in Basin is 64%.

How much does it rain in Basin in May?

In Basin, Montana, in May, during 18.2 rainfall days, 2.36" (60mm) of precipitation is typically accumulated.

How many days does it snow in May in Basin?

In Basin, Montana, in May, during 4.4 snowfall days, 2.64" (67mm) of snow is typically accumulated.

What is the average length of the day in May in Basin?

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

What time are sunrise and sunset in May in Basin?

In May, on the first day of the month, sunrise is at 6:13 am and sunset at 8:38 pm. On the last day of the month, in Basin, Montana, sunrise is at 5:40 am and sunset at 9:13 pm MDT.

How long on average sun shines in May in Basin?

The average sunshine duration in May in Basin, Montana, is 10.2h.

What is the UV index intensity in May in Basin?

In May, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a moderate vulnerability 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
Basin, MT

Average temperature in May - Basin, MT
  • Average high temperature in May: 58.5°F

The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is December (27°F).

  • Average low temperature in May: 35.2°F

The month with the highest average low temperature is August (48.6°F).
The coldest month (with the lowest average low temperature) is December (12.6°F).

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Average pressure in May
Basin, MT

Average pressure in May - Basin, MT
  • Average pressure in May: 29.95"Hg

The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in May
Basin, MT

Average wind speed in May - Basin, MT
  • Average wind speed in May: 5.4mph

The windiest months (with the highest average wind speed) are January and November (6.5mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).

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Average humidity in May
Basin, MT

Average humidity in May - Basin, MT
  • Average humidity in May: 64%

The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is August (46%).

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Average rainfall in May
Basin, MT

Average rainfall in May - Basin, MT
  • Average rainfall in May: 2.36"

The wettest month (with the highest rainfall) is June (2.68").
The driest month (with the least rainfall) is December (0.79").

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Average rainfall days in May
Basin, MT

Average rainfall days in May - Basin, MT
  • Average rainfall days in May: 18.2 days

The month with the highest number of rainy days is May (18.2 days).
The month with the least rainy days is November (7.5 days).

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Average snowfall in May
Basin, MT

Average snowfall in May - Basin, MT
  • Average snowfall in May: 2.64"

The month with the highest snowfall is February (9.72").
The months with the least snowfall are July and August (0").

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Average snowfall days in May
Basin, MT

Average snowfall days in May - Basin, MT
  • Average snowfall days in May: 4.4 days

The month with the highest number of snowfall days is February (18 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
Basin, MT

Average daylight in May / Average sunshine in May - Basin, 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 1min

The month with the most sunshine is July (Average sunshine: 11h and 42min).
The months with the least sunshine are January and December (Average sunshine: 5h and 36min).

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Average sunshine days in May
Basin, MT

Average sunshine days in May - Basin, MT
  • Average sunshine days in May: 9.3 days

The month with the most sunshine days is September (17.9 days).
The month with the least sunshine days is February (8.5 days).

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Average UV index in May
Basin, MT

Average UV index in May - Basin, MT
  • Average UV index in May: 4

The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is February (UV index 1).

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Average cloud cover in May
Basin, MT

Average cloud cover in May - Basin, MT
  • Average cloud cover in May: 34

The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 15).

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Average visibility in May
Basin, MT

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

The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March and December (5mi).

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Basin, Montana, USA

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