May weather forecast and climate
Roberts, MT

May, the last month of the spring, in Roberts, is a comfortable month, with average temperature varying between 61°F (16.1°C) and 41.4°F (5.2°C).

Temperature

In May, the average high-temperature rises, from a cool 51.3°F (10.7°C) in April, to a comfortable 61°F (16.1°C). The average low-temperature, in Roberts, is 41.4°F (5.2°C).

Humidity

The average relative humidity in May is 62%.

Rainfall

May is the month with the most rainfall in Roberts. Rain falls for 16.3 days and accumulates 2.09" (53mm) of precipitation.

Snowfall

Months with snowfall are January through June, September through December. In Roberts, during May, snow falls for 2.4 days and regularly aggregates up to 2.83" (72mm) of snow. In Roberts, during the entire year, snow falls for 61.5 days, and aggregates up to 41.77" (1061mm) of snow.

Daylight

In Roberts, the average length of the day is 14.9h.

Sunshine

The average sunshine is 10.5h.

UV index

In May, the average daily maximum UV index in Roberts is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to the UV radiation for the ordinary person.
Note: In May, the average maximum UV index of 4 translate into the following recommendations:
Take precautions - Protection against sunburn is recommended. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

What is the temperature in May in Roberts?

In May, the average high-temperature is 61°F (16.1°C), and the average low-temperature is 41.4°F (5.2°C).

What is the average humidity in May in Roberts?

In May, the average relative humidity in Roberts is 62%.

How much does it rain in Roberts in May?

In Roberts, Montana, in May, during 16.3 rainfall days, 2.09" (53mm) of precipitation is typically accumulated.

What is the wettest month in Roberts?

The month with the most rainfall in Roberts, Montana, is May when the rain falls for 16.3 days and typically aggregates up to 2.09" (53mm) of precipitation.

How much does it snow in Roberts in May?

In Roberts, in May, during 2.4 snowfall days, 2.83" (72mm) of snow is typically accumulated.

How many hours of daylight does Roberts have in May?

In May, the average length of the day is 14.9h.

How many hours of sunshine does Roberts have in May?

The average sunshine in May in Roberts, Montana, is 10.5h.

How high is the UV index in May in Roberts?

The average daily maximum UV index in May in Roberts is 4. A UV Index value of 3 to 5 symbolizes a medium hazard to health from the exposure to the Sun's UV rays.
Average temperature in May - Roberts, MT
  • Average high temperature in May: 16.1°C

The warmest month (with the highest average high temperature) is July (28.3°C).
The month with the lowest average high temperature is December (-0.7°C).

  • Average low temperature in May: 5.2°C

Months with the highest average low temperature are July and August (14°C).
The coldest month (with the lowest average low temperature) is February (-8.5°C).

Average pressure in May - Roberts, MT
  • Average pressure in May: 1013.5mbar

The month with the highest atmospheric pressure is January (1021.1mbar).
The month with the lowest atmospheric pressure is June (1011.9mbar).

Average wind speed in May - Roberts, MT
  • Average wind speed in May: 11.4km/h

The windiest month (with the highest average wind speed) is January (14km/h).
The calmest month (with the lowest average wind speed) is August (9.6km/h).

Average humidity in May - Roberts, MT
  • Average humidity in May: 62%

The month with the highest relative humidity is January (76%).
The month with the lowest relative humidity is August (41%).

Average rainfall in May - Roberts, MT
  • Average rainfall in May: 53mm

The wettest month (with the highest rainfall) is May (53mm).
The driest month (with the least rainfall) is January (13mm).

Average rainfall days in May - Roberts, MT
  • Average rainfall days in May: 16.3 days

The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is February (4 days).

Average snowfall in May - Roberts, MT
  • Average snowfall in May: 72mm

The month with the highest snowfall is February (173mm).
Months with the least snowfall are July and August (0mm).

Average snowfall days in May - Roberts, MT
  • Average snowfall days in May: 2.4 days

The month with the highest number of snowfall days is February (10.8 days).
Months with the least snowfall days are July and August (0 days).

Average daylight in May / Average sunshine in May - Roberts, MT
  • Average daylight in May: 14.9h

The month with the longest days is June (Average daylight: 15.6h).
The month with the shortest days is December (Average daylight: 8.8h).

  • Average sunshine in May: 10.5h

The month with the most sunshine is July (Average sunshine: 11.9h).
The month with the least sunshine is February (Average sunshine: 6.2h).

Average sunshine days in May - Roberts, MT
  • Average sunshine days in May: 10.5 days

The month with the most sunshine days is December (19.7 days).
The month with the least sunshine days is May (10.5 days).

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

The month with the highest UV index is July (UV index 6).
Months with the lowest UV index are January, February, March, November and December (UV index 2).

Average cloud cover in May - Roberts, MT
  • Average cloud cover in May: 32

The month with the most cloud cover is February (Cloud cover 38).
Months with the least cloud cover are July and August (Cloud cover 15).

Average visibility in May - Roberts, MT
  • Average visibility in May: 9km

Months with the highest visibility are June, July, August, September and October (10km).
Months with the lowest visibility are January, February, March, April, May, November and December (9km).