May weather forecast and climate
Plentywood, MT

The last month of the spring, May, is an enjoyable month in Plentywood, Montana, with temperature in the range of an average low of 46.4°F (8°C) and an average high of 64.2°F (17.9°C).

Temperature

In Plentywood, the average high-temperature increases, from a fresh 50.2°F (10.1°C) in April, to a comfortable 64.2°F (17.9°C). In Plentywood, the average low-temperature is 46.4°F (8°C).

Humidity

In May, the average relative humidity is 55%.

Rainfall

In Plentywood, in May, it is raining for 12.5 days, with typically 1.57" (40mm) of accumulated precipitation. Throughout the year, there are 93.3 rainfall days, and 12.01" (305mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. May is the last month it regularly snows in Plentywood. During 0.8 snowfall days, Plentywood aggregates 0.51" (13mm) of snow. In Plentywood, during the entire year, snow falls for 66.5 days, and aggregates up to 19.02" (483mm) of snow.

Daylight

In May, the average length of the day is 15.3h.

Sunshine

The average sunshine in Plentywood, Montana, is 10h.

UV index

The average daily maximum UV index in Plentywood is 5. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to the Sun's UV rays for average individuals.
Note: The average daily UV index of 5 in May transform into the following instructions:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the temperature in May in Plentywood?

In Plentywood, in May, the average high-temperature is 64.2°F (17.9°C), and the average low-temperature is 46.4°F (8°C).

What is the average humidity in May in Plentywood?

In May, the average relative humidity in Plentywood is 55%.

How much does it rain in Plentywood in May?

In Plentywood, during May, the rain falls for 12.5 days and regularly aggregates up to 1.57" (40mm) of precipitation.

What is the last month it snows in Plentywood?

May is the last month it regularly snows in Plentywood, Montana. During 0.8 snowfall days, in May, Plentywood aggregates 0.51" (13mm) of snow.

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

The average length of the day in May in Plentywood, Montana, is 15.3h.

How long on average sun shines in May in Plentywood?

In Plentywood, Montana, the average sunshine in May is 10h.

What is the UV index reading in May in Plentywood?

In May, the average daily maximum UV index in Plentywood is 5. A UV Index reading of 3 to 5 represents a moderate vulnerability from the exposure to the Sun's UV radiation.
Average temperature in May - Plentywood, MT
  • Average high temperature in May: 17.9°C

The warmest month (with the highest average high temperature) is July (27.8°C).
The month with the lowest average high temperature is February (-6.8°C).

  • Average low temperature in May: 8°C

The month with the highest average low temperature is July (16.1°C).
The coldest month (with the lowest average low temperature) is February (-14.3°C).

Average pressure in May - Plentywood, MT
  • Average pressure in May: 1013.3mbar

The month with the highest atmospheric pressure is February (1021.6mbar).
The month with the lowest atmospheric pressure is June (1010.2mbar).

Average wind speed in May - Plentywood, MT
  • Average wind speed in May: 17.1km/h

The windiest month (with the highest average wind speed) is April (17.8km/h).
The calmest month (with the lowest average wind speed) is February (14.8km/h).

Average humidity in May - Plentywood, MT
  • Average humidity in May: 55%

Months with the highest relative humidity are January and February (88%).
The month with the lowest relative humidity is August (46%).

Average rainfall in May - Plentywood, MT
  • Average rainfall in May: 40mm

The wettest month (with the highest rainfall) is June (55mm).
The driest month (with the least rainfall) is February (12mm).

Average rainfall days in May - Plentywood, MT
  • Average rainfall days in May: 12.5 days

The month with the highest number of rainy days is June (13.9 days).
The month with the least rainy days is February (2.6 days).

Average snowfall in May - Plentywood, MT
  • Average snowfall in May: 13mm

The month with the highest snowfall is November (95mm).
Months with the least snowfall are June, July, August and September (0mm).

Average snowfall days in May - Plentywood, MT
  • Average snowfall days in May: 0.8 days

The month with the highest number of snowfall days is February (13.5 days).
Months with the least snowfall days are June, July, August and September (0 days).

Average daylight in May / Average sunshine in May - Plentywood, MT
  • Average daylight in May: 15.3h

The month with the longest days is June (Average daylight: 16.1h).
The month with the shortest days is December (Average daylight: 8.4h).

  • Average sunshine in May: 10h

The month with the most sunshine is July (Average sunshine: 11.7h).
The month with the least sunshine is February (Average sunshine: 3.9h).

Average sunshine days in May - Plentywood, MT
  • Average sunshine days in May: 16.6 days

The month with the most sunshine days is August (20.1 days).
Months with the least sunshine days are February and June (13.8 days).

Average UV index in May - Plentywood, MT
  • Average UV index in May: 5

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

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

The month with the most cloud cover is February (Cloud cover 60).
Months with the least cloud cover are July and August (Cloud cover 19).

Average visibility in May - Plentywood, MT
  • Average visibility in May: 10km

Months with the highest visibility are May, June, July, August, September and October (10km).
Months with the lowest visibility are January, February, March and December (8km).