May weather forecast
Big Sandy, MT

Share

Weather in May

The last month of the spring, May, is an enjoyable month in Big Sandy, Montana, with an average temperature fluctuating between 64.6°F (18.1°C) and 45.1°F (7.3°C).

Temperature

The shift from April to May brings an increase in the average high-temperature, moving from a cool 54.1°F (12.3°C) to an enjoyable 64.6°F (18.1°C). In Big Sandy, May is marked by an average low-temperature of 45.1°F (7.3°C).

Humidity

In Big Sandy, Montana, the average relative humidity in May is 55%.

Rainfall

In May, the rain falls for 12.5 days. Throughout May, 1.02" (26mm) of precipitation is accumulated. In Big Sandy, during the entire year, the rain falls for 91 days and collects up to 6.42" (163mm) of precipitation.

Snowfall

Months with snowfall are January through May, September through December. May is the last month it regularly snows in Big Sandy. During 0.3 snowfall days, in May, Big Sandy aggregates 0.16" (4mm) of snow. Throughout the year, in Big Sandy, there are 44.2 snowfall days, and 11.18" (284mm) of snow is accumulated.

Daylight

In Big Sandy, the average length of the day in May is 15h and 13min.
On the first day of May in Big Sandy, sunrise is at 6:00 am and sunset at 8:34 pm. On the last day of the month, sunrise is at 5:24 am and sunset at 9:12 pm MDT.

Sunshine

The average sunshine in May is 10.2h.

UV index

In Big Sandy, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In May, the maximum UV index of 5 transforms into these recommendations:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
[Resources]

Frequently asked questions

What is the temperature in May in Big Sandy?

The high-temperature, in May, in Big Sandy, is 64.6°F (18.1°C), while the low-temperature averages to 45.1°F (7.3°C).

What is the average humidity in May in Big Sandy?

The average relative humidity in May is 55%.

How much does it rain in Big Sandy in May?

In May, the rain falls for 12.5 days. Throughout May, 1.02" (26mm) of precipitation is accumulated.

What is the last month it snows in Big Sandy?

May is the last month it regularly snows in Big Sandy. During 0.3 snowfall days, in May, Big Sandy aggregates 0.16" (4mm) of snow.

What is the average length of the day in May in Big Sandy?

In May, the average day length is 15h and 13min.

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

On the first day of May in Big Sandy, sunrise is at 6:00 am and sunset at 8:34 pm. On the last day of the month, sunrise is at 5:24 am and sunset at 9:12 pm MDT.

How many hours of sunshine does Big Sandy have in May?

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

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

The average daily maximum UV index in May in Big Sandy, Montana, is 5. A UV Index estimate of 3 to 5 represents a moderate health threat from 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 Sandy, MT

Average temperature in May - Big Sandy, MT
  • Average high temperature in May: 64.6°F

The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is December (30.2°F).

  • Average low temperature in May: 45.1°F

The month with the highest average low temperature is August (61.3°F).
The coldest month (with the lowest average low temperature) is February (17.8°F).

[Resources]

Average pressure in May
Big Sandy, MT

Average pressure in May - Big Sandy, MT
  • Average pressure in May: 29.92"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).

[Resources]

Average wind speed in May
Big Sandy, MT

Average wind speed in May - Big Sandy, MT
  • Average wind speed in May: 9.8mph

The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest month (with the lowest average wind speed) is August (8.5mph).

[Resources]

Average humidity in May
Big Sandy, MT

Average humidity in May - Big Sandy, MT
  • Average humidity in May: 55%

The month with the highest relative humidity is January (79%).
The month with the lowest relative humidity is August (38%).

[Resources]

Average rainfall in May
Big Sandy, MT

Average rainfall in May - Big Sandy, MT
  • Average rainfall in May: 1.02"

The wettest month (with the highest rainfall) is June (1.22").
The driest month (with the least rainfall) is December (0.28").

[Resources]

Average rainfall days in May
Big Sandy, MT

Average rainfall days in May - Big Sandy, MT
  • Average rainfall days in May: 12.5 days

The month with the highest number of rainy days is May (12.5 days).
The month with the least rainy days is February (4.2 days).

[Resources]

Average snowfall in May
Big Sandy, MT

Average snowfall in May - Big Sandy, MT
  • Average snowfall in May: 0.16"

The month with the highest snowfall is January (2.4").
The months with the least snowfall are June, July and August (0").

[Resources]

Average snowfall days in May
Big Sandy, MT

Average snowfall days in May - Big Sandy, MT
  • Average snowfall days in May: 0.3 days

The month with the highest number of snowfall days is January (9.2 days).
The months with the least snowfall days are June, July and August (0 days).

[Resources]

Average daylight in May /
Average sunshine in May
Big Sandy, MT

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

The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).

  • Average sunshine in May: 10h and 1min

The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is February (Average sunshine: 5h and 18min).

[Resources]

Average sunshine days in May
Big Sandy, MT

Average sunshine days in May - Big Sandy, MT
  • Average sunshine days in May: 15.3 days

The month with the most sunshine days is September (21.5 days).
The month with the least sunshine days is June (14.6 days).

[Resources]

Average UV index in May
Big Sandy, MT

Average UV index in May - Big Sandy, MT
  • Average UV index in May: 5

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

[Resources]

Average cloud cover in May
Big Sandy, MT

Average cloud cover in May - Big Sandy, MT
  • Average cloud cover in May: 33

The month with the most cloud cover is February (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 14).

[Resources]

Average visibility in May
Big Sandy, MT

Average visibility in May - Big Sandy, 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).

[Resources]

Big Sandy, Montana, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location