May weather forecast
Big Timber, MT

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Weather in May

May observes the most distinct shift in Big Timber's climate with temperature continuing its rising trend and rainfall peaking to its highest at 3.15" (80mm). The shift in weather brings about a surge in outdoor activities, from scenic hikes to riverside picnics. Additionally, with decreasing relative humidity and the longest daylight hours, May delivers the most comfortable spring weather. Substantial rainfall nourishes the landscape, encouraging the growth of flora and providing ample nutrients for fauna. The flourishing nature in May paints the most picturesque scenes in Big Timber.

Temperature

The arrival of May brings an increase in high-temperatures, moving from a frosty 46.6°F (8.1°C) in April to a moderate 56.8°F (13.8°C). Big Timber, in May, witnesses an average low-temperature of 37.4°F (3°C).

Humidity

In May, the average relative humidity in Big Timber, Montana, is 67%.

Rainfall

May is the month with the most rainfall in Big Timber. Rain falls for 19.8 days and accumulates 3.15" (80mm) of precipitation.

Snowfall

Months with snowfall are January through May, September through December. May is the last month it regularly snows in Big Timber, Montana. During 1.9 snowfall days, in May, Big Timber aggregates 1.3" (33mm) of snow. Throughout the year, in Big Timber, there are 67.6 snowfall days, and 38.19" (970mm) of snow is accumulated.

Daylight

In May, the average length of the day in Big Timber is 14h and 58min.
On the first day of May in Big Timber, sunrise is at 6:05 am and sunset at 8:28 pm. On the last day of the month, sunrise is at 5:33 am and sunset at 9:02 pm MDT.

Sunshine

In May, the average sunshine in Big Timber is 9.9h.

UV index

In Big Timber, the average daily maximum UV index in May is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for average individuals.
Note: The daily high UV index of 4 during May translates into the following recommendations:
Make use of precautions - Shielding skin and eyes from injury is a requirement. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
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Frequently asked questions

What are the temperatures in Big Timber in May?

In Big Timber, in May, the average high-temperature is 56.8°F (13.8°C), and the average low-temperature is 37.4°F (3°C).

What is the average humidity in May in Big Timber?

In May, the average relative humidity in Big Timber is 67%.

What is the rainiest month in Big Timber?

The month with the most rainfall in Big Timber, Montana, is May, when the rain falls for 19.8 days and typically aggregates up to 3.15" (80mm) of precipitation.

How many days does it rain in May in Big Timber?

In May, in Big Timber, Montana, the rain falls for 19.8 days. Throughout May, 3.15" (80mm) of precipitation is accumulated.

What is the last month it snows in Big Timber?

May is the last month it regularly snows in Big Timber, Montana. During 1.9 snowfall days, in May, Big Timber aggregates 1.3" (33mm) of snow.

How many hours of daylight does Big Timber have in May?

In Big Timber, Montana, the average day length in May is 14h and 58min.

What time are sunrise and sunset in May in Big Timber?

In May, on the first day of the month, sunrise is at 6:05 am and sunset at 8:28 pm. On the last day of the month, in Big Timber, sunrise is at 5:33 am and sunset at 9:02 pm MDT.

How long on average sun shines in May in Big Timber?

The average sunshine duration in May is 9.9h.

What is the UV index intensity in May in Big Timber?

In May, the average daily maximum UV index in Big Timber is 4. A UV Index reading of 3 to 5 represents a moderate vulnerability from unsafe exposure to Sun's UV rays.
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
Big Timber, MT

Average temperature in May - Big Timber, MT
  • Average high temperature in May: 56.8°F

The warmest month (with the highest average high temperature) is July (78.6°F).
The month with the lowest average high temperature is December (28.4°F).

  • Average low temperature in May: 37.4°F

The month with the highest average low temperature is August (52.9°F).
The coldest month (with the lowest average low temperature) is February (15.3°F).

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Average pressure in May
Big Timber, MT

Average pressure in May - Big Timber, MT
  • Average pressure in May: 29.93"Hg

The months with the highest atmospheric pressure are January and December (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

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Average wind speed in May
Big Timber, MT

Average wind speed in May - Big Timber, MT
  • Average wind speed in May: 6.8mph

The windiest month (with the highest average wind speed) is January (11.1mph).
The calmest month (with the lowest average wind speed) is July (5.9mph).

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Average humidity in May
Big Timber, MT

Average humidity in May - Big Timber, MT
  • Average humidity in May: 67%

The month with the highest relative humidity is February (80%).
The month with the lowest relative humidity is August (47%).

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Average rainfall in May
Big Timber, MT

Average rainfall in May - Big Timber, MT
  • Average rainfall in May: 3.15"

The wettest month (with the highest rainfall) is May (3.15").
The driest month (with the least rainfall) is January (0.47").

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Average rainfall days in May
Big Timber, MT

Average rainfall days in May - Big Timber, MT
  • Average rainfall days in May: 19.8 days

The month with the highest number of rainy days is May (19.8 days).
The months with the least rainy days are January and December (5.3 days).

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Average snowfall in May
Big Timber, MT

Average snowfall in May - Big Timber, MT
  • Average snowfall in May: 1.3"

The month with the highest snowfall is March (7.09").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in May
Big Timber, MT

Average snowfall days in May - Big Timber, MT
  • Average snowfall days in May: 1.9 days

The month with the highest number of snowfall days is February (12.9 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
Big Timber, MT

Average daylight in May / Average sunshine in May - Big Timber, 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: 9h and 5min

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: 6h and 12min).

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Average sunshine days in May
Big Timber, MT

Average sunshine days in May - Big Timber, MT
  • Average sunshine days in May: 7.7 days

The month with the most sunshine days is January (19.8 days).
The month with the least sunshine days is May (7.7 days).

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Average UV index in May
Big Timber, MT

Average UV index in May - Big Timber, 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, April, October, November and December (UV index 2).

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Average cloud cover in May
Big Timber, MT

Average cloud cover in May - Big Timber, MT
  • Average cloud cover in May: 36

The month with the most cloud cover is February (Cloud cover 41).
The months with the least cloud cover are July and August (Cloud cover 16).

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Average visibility in May
Big Timber, MT

Average visibility in May - Big Timber, 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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Big Timber, Montana, USA

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